JP5143699B2 - Construction method of concrete frame using residual formwork, concrete frame using the method, and foundation block for construction of concrete frame using residual formwork - Google Patents

Description

  The present invention relates to a construction technique (construction method, concrete frame, and foundation block) for constructing a concrete frame such as a dam, a sabo dam, a revetment, and a tunnel using a remaining formwork.

  Conventionally, when constructing concrete frames such as dams, sabo dams, revetments and tunnels, after placing a wooden or steel formwork (temporary frame), cast concrete, A construction method that completes a concrete frame by solidifying is generally adopted. At that time, depending on the construction method employed, when the framed formwork is placed and removed after the concrete is placed and solidified, or when the framed formwork is not removed and remains as part of the frame (wall surface) There are two cases.

When the method of removing the formwork is adopted, not only the work to remove the formwork or the disposal work of the remaining material occurs, but also the waste of the remaining material may be harmful to the environment when scattered around the construction site. There is also.
On the other hand, when adopting a construction method to leave the formwork, the formwork remains as a part of the housing (wall surface), so the work of removing the formwork and the disposal work of the remaining material as described above It is not necessary, and the influence on the environment can be suppressed. In addition, the strength of the frame can be increased, or the surface of the formwork (wall surface) can be decorated to make the frame more harmonious with the landscape. Therefore, in recent years, in the construction of concrete frames, there are not a few cases where construction methods using such residual formwork are employed. For this reason, various techniques relating to the construction of concrete frames using the remaining formwork are known (see Patent Document 1).

  For example, as disclosed in Patent Document 1, when a housing is constructed by a method using a remaining mold, first, the remaining mold forming the surface side (front side) of the housing is a mold installation base (an example) As described above, a predetermined number of pieces are arranged in the length direction (parallel direction) of the frame wall so as to stand upright on the base concrete serving as the foundation of the concrete frame. At that time, each residual mold has a tensile bar connecting member projecting on the back surface to hook the tensile bar and maintain the posture (position) of the residual mold relative to the mold installation base (for example, One at each of the four corners), the tension bar connecting member and the anchor bar projecting from the formwork installation base so that the remaining formwork forms a predetermined normal gradient (for example, perpendicular to the formwork installation base) Tensile bars are bridged between the two. Accordingly, the remaining molds are erected with respect to the mold installation base, and are arranged in the length direction (parallel direction) in this state.

In addition, the remaining molds arranged in the length direction (parallel direction) of the casing wall surface are stacked with the remaining mold form of the next stage (upper stage) in the height direction (stacking direction) of the casing wall surface. At that time, the bottom surface of the next-stage residual mold is placed on the top surface of the previous-stage (bottom) residual mold, and a predetermined legal gradient (for example, the same as the residual mold of the previous-stage is used) Angle), the tension bar is bridged between the tension bar connecting member of the next-stage remaining formwork and the anchor bar, and the remaining formwork of the previous stage and the next-stage remaining formwork are connected via the plate-like connection member. Connect with bolts. In addition, the height (sides) of the former and the remaining residual formwork do not overlap each other, and the middle of the remaining formwork in the lengthwise direction of the next stage remains on the short side of the former residual formwork. They are stacked so that the parts can be positioned.
Thereafter, the remaining mold form of the next stage is arranged on the remaining mold form until it has the same length as the remaining mold form of the previous stage, and the remaining mold form is moved in the height direction ( Stack in the stacking direction).

  Furthermore, a predetermined interval is provided with respect to the formwork installation base in the same manner as the surface side described above, and the remaining formwork constituting the back side (back side) of the housing is spaced apart from the remaining formwork on the surface side. For example, it is erected with the same length as the remaining mold on the surface side and is stacked up to a predetermined number of steps (the same height). At this time, the remaining mold form may be erected with a predetermined normal gradient (for example, the same angle as the remaining form form on the surface side).

Then, to the space sandwiched between the residual mold on the front side and the residual mold on the back side, which is erected with respect to the base concrete so as to face each other with a predetermined interval (hereinafter referred to as a placement space) By placing concrete and solidifying it, a concrete frame is constructed in which the remaining formwork remains as a part (wall surface) thereof.
JP 2007-46306 A

By the way, when constructing the frame by the construction method using the remaining formwork, it is necessary to accurately position the bottom remaining formwork with respect to the formwork installation base. This is important for safe and smooth work.
In particular, the concrete frame as described above is often built with a predetermined inclination angle (legal gradient) with respect to the formwork installation base. In this case, the lowermost remaining formwork is used as the formwork installation base. On the other hand, it is necessary to accurately position in a state of being inclined toward the front surface side (or back surface side) of the housing at the inclination angle.

As an example, in Patent Document 1 described above, the lowermost remaining formwork is directly placed in contact with the surface layer surface of the formwork installation base that forms a flat shape. By fixing the delivered tension bars to these tension bar connecting members and anchor bars by welding or the like, the lowermost remaining formwork is positioned with respect to the formwork installation base.
Therefore, in this case, the tensile bar connecting member is adjusted so that the normal gradient becomes a predetermined inclination angle in a state where the bottom surface of the lowermost remaining mold frame is in contact with the surface layer surface of the flat mold forming base. The tension bars spanned between the anchor bars and the anchor bars must be fixed to these tension bar connecting members and anchor bars by welding or the like.

  For this reason, the posture of the lowermost remaining formwork in contact with the surface layer surface of the formwork installation base is maintained until the tension bar is stretched between the tension bar connecting member and the anchor bar and fixed to them. It is necessary to perform the fixing operation so as to stabilize the tilted state and prevent a positional shift, and the workability is poor, which causes the construction period to be prolonged.

  The present invention has been made in order to solve such problems, and its purpose is to construct a bottom remaining formwork with respect to a formwork installation base when a concrete frame is constructed by a method using the remaining formwork. By enabling accurate and easy positioning while tilting toward the front side (or back side) of the housing at a predetermined tilt angle (regular slope), and improving the efficiency of standing and stacking of remaining molds An object of the present invention is to provide a construction technique (a construction method, a concrete frame using the method, and a foundation block for the construction) that makes it possible to shorten the construction period.

In order to achieve such an object, the concrete frame construction method using the remaining formwork according to the present invention includes a step of arranging a predetermined number of remaining formwork and standing on the formwork installation base, A step of stacking another remaining formwork in a predetermined number of steps on the remaining formwork, a step of interconnecting the remaining formwork standing upright and the stacked remaining formwork, and forming the remaining formwork connected Including a step of installing on the frame installation base and a concrete placing step of integrating the residual mold frame installed on the mold installation base with the mold frame installation base using the cast concrete. remaining is allowed to the construction methods of the wall is constructed concrete skeleton of the skeleton, a plurality of residual formwork piled predetermined number causes a predetermined number erected as described above, the remaining formwork The back plate is connected to each other via a connecting plate and is installed on a formwork installation base via a tensile bar, and the connecting plate includes a plurality of adjacent ones in the height direction and the length direction. The remaining formwork is connected through a plurality of connecting members, and the back surface of the connecting plate is provided with a tension bar connecting part for connecting one end of the tension bar, and the tension bar connecting part includes a plurality of the tension bar connecting parts. It is characterized by being arranged in the approximate center of the region formed with the respective connecting locations by the connecting members as vertices .
Moreover, it can also be set as the construction method of the concrete frame characterized by having the following structure.
A step of arranging a predetermined number of remaining molds in a standing manner on a mold installation base, a step of stacking another remaining mold frame in a predetermined number of steps on the standing residual molds, and the standing residual mold And a step of connecting the stacked remaining molds to each other, a step of installing the connected residual molds on a mold installation base, and a mold for placing the residual molds installed on the mold installation bases with cast concrete. In the concrete frame construction method, which includes a concrete placing process to be integrated with the frame installation base, and these residual molds are left as they are after construction, and the wall surface of the frame is formed, A plurality of connecting members provided with holes project, and as described above, a predetermined number of standing members and a plurality of remaining molds stacked in a predetermined number of steps are connected to the formwork connecting the connecting members. The connecting plates are connected to each other through a connecting plate having a plurality of holes, and the connecting plate allows a predetermined connecting member of the remaining mold form adjacent in the height direction and the length direction to be inserted into the predetermined form connecting hole. At the same time, a connecting wedge is inserted and fixed in the through hole in the inserted state.

In this case, the connecting members are disposed at least one at each of the four corners of each remaining mold, one at the approximate center position in the length direction, and one at each end position in the height direction, The remaining mold is high so that the fitting position of the left and right remaining molds adjacent to each other in the length direction is positioned approximately at the center in the length direction of the remaining molds adjacent in the height direction. The connecting plate is stacked in the vertical direction, and the connecting plate is connected to each connecting member disposed in the opposite corner position of the left and right residual molds adjacent in the length direction, and the length of the residual molds adjacent in the height direction. It is characterized by having three formwork connection holes through which one connection member located in the center in the vertical direction is inserted.
Furthermore, in this case, the remaining formwork is installed on the formwork installation base via a tension bar, and a tension bar connecting part for connecting one end of the tension bar is provided on the back surface of the connection plate. The portion is arranged in a triangular inner region formed with three mold connection holes as apexes.
The tensile bar connecting portion is provided with a tensile bar connecting hole for connecting a tensile bar, and the tensile bar connecting hole is farther from the back surface of the connecting plate than the tip of the connecting member inserted through the formwork connecting hole of the connecting plate. The position is set.

The connection wedge is inserted in a vertical direction that is a stacking direction of the remaining molds, and a vertical region in a surface portion of the connection wedge facing the back surface of the connection plate is in contact with the back surface of the connection plate.

The remaining mold form has a rectangular plate shape, and includes a convex or concave mold form fitting portion that can be fitted with other remaining form frames adjacent to each other in the length direction and the height direction of the wall surface, It is erected by fitting the formwork fitting part with other adjacent remaining formwork and stacked, and the formwork installation base is the basis for positioning the bottom remaining formwork The block is disposed in the length direction, and the lowermost remaining formwork is placed on the convex or concave block fitting part provided in the base block so as to be fitted with the formwork fitting part. It is positioned with respect to the above-mentioned formwork installation base by fitting a formwork fitting part.

The foundation block includes a height adjusting member for adjusting a height with respect to the formwork installation base to be disposed and fixing the height position.

  According to the construction technology of the concrete frame using the residual mold of the present invention (construction method, concrete frame using the method, and the foundation block for the construction), the bottom residual mold is set to the mold installation base. Thus, it can be accurately and easily positioned in a state of being inclined to the front surface side (or back surface side) of the housing at a predetermined inclination angle (normal gradient). As a result, it is possible to improve the efficiency of standing and stacking of the remaining formwork, and it is possible to shorten the construction period of the concrete frame. In addition, depending on the form of the concrete frame to be constructed, the slope of the wall (the inclination angle of the remaining formwork relative to the formwork installation base and the inclination angle of the remaining formwork adjacent to the upper and lower stages) can be flexibly adjusted. It becomes possible to improve the degree of freedom of construction.

  Hereinafter, a concrete frame construction method using a residual formwork according to an embodiment of the present invention, a concrete frame using the construction method, and a foundation block for the construction will be described with reference to the accompanying drawings. The present invention can be applied as a technique for constructing various concrete frames (hereinafter also simply referred to as a frame) using the remaining formwork. Examples of the frame include dams and sabo dams. , Revetments and tunnels can be assumed. Further, such a concrete frame may be a newly constructed frame (newly constructed frame), or may be for thickening the wall surface of a frame that has already been constructed (existing frame). .

  In this case, the remaining formwork functions as a formwork when placing the ready-mixed concrete during construction of the concrete frame, and is removed and removed after completion of the concrete frame construction, that is, after the cast concrete is solidified. It refers to a plate-like member (panel) that remains as it is as the wall surface of the concrete frame. In the present embodiment, it is assumed as an example a case where the remaining formwork is configured as a concrete panel in which a planar shape having a predetermined length, height, and thickness is a rectangle (a quadrilateral). 1 (a) to 1 (c) show the configuration of a rectangular residual mold 2 in which the long side is set to a size twice the short side (for example, the length size is twice the height size). Illustrated.

Further, the remaining mold 2 is configured such that the surface 2s is a wall surface (finished surface) of the concrete frame and the back surface 2u is a concrete casting surface, and the surface 2s may be simply a flat surface. It may be configured in a stone-like shape in which various stones such as iron flat stone and granite are pasted, or a pseudo stone shape. Alternatively, a configuration may be adopted in which decoration is performed by forming various patterns by cutting or the like on the surface 2s, or attaching a woodgrain decorative panel.
By subjecting the remaining mold 2 to such surface processing, it is possible to construct a concrete frame having a wall surface that is more harmonious with the landscape.

On the other hand, the back surface 2u of the remaining mold 2 may be a flat surface or may have an arbitrary shape (for example, an uneven shape) according to the shape of the surface 2s described above. It is preferable that the surface form is suitable for placing. FIGS. 1A to 1C show, as an example, the structure of the remaining mold 2 with an increased surface area (ie, a contact area with the cast concrete) while reducing the weight by making the back surface 2u uneven. The back surface 2u is provided with eight concave portions 22u that are recessed so as to form a concave quadrilateral, and each concave portion 22u is formed by a joint portion 24u protruding in a convex shape with respect to the concave portion 22u. It is separated. Further, each recess 22u is formed with six holes 22h that are recessed so as to form a concave hemisphere, thereby further reducing the weight and increasing the contact area with the cast concrete.
The form (size, shape, etc.) of the concave portion 22u (in other words, the joint portion 24u) and the hole portion 22h is a quadrilateral or hemispherical shape as shown in FIGS. It does not specifically limit, It can be set as the arbitrary forms which can aim at the weight reduction of the residual formwork 2, and the contact area expansion with placement concrete.

The remaining mold 2 can be mass-produced at a factory, and the quality can be made uniform. In addition, the use of concrete makes it possible to inhibit the use of wood and contribute to the prevention of environmental problems. At that time, as the concrete to be used, resin concrete, bolt land cement concrete, glass fiber reinforced concrete (FRC), or the like, or the like may be appropriately selected.
The remaining mold 2 is provided with a predetermined management hole 2h so as to penetrate from the front surface 2s to the back surface 2u. The management hole 2h is formed in a concrete placement space (for example, a space sandwiched between the remaining mold 2 constituting the front side wall surface of the concrete frame and the remaining mold frame 2 constituting the back side wall surface) in a concrete placing process described later. When the ready-mixed concrete is poured, it is used as a hole for confirming whether or not the concrete is sufficiently filled into the placement space.

When constructing a concrete frame, depending on the size (scale) of the frame, a predetermined number of remaining molds 2 are arranged in the length direction of the wall of the frame (width direction of the constructed concrete frame). While standing on the base 4 (FIGS. 2 and 3), it is stacked in a predetermined number of steps in the height direction (stacking direction) of the frame wall surface. Here, the formwork installation base 4 is a base part of a concrete frame having a reference surface for standing and stacking the remaining formwork 2, for example, a base that is placed on the construction site and becomes the base of the concrete frame Consists of concrete and crushed stones laid at the construction site.
Then, the remaining mold 2 has anchor bars (to be described later) protruding from the mold installation base 4 so as to form a predetermined inclination angle (normal gradient of the wall of the casing) with respect to the mold installation base 4. By extending the tension bars 18 (FIGS. 10 and 11) between the two, they are erected on the formwork installation base 4 and arranged in the length direction, and are connected to each other in a stacked state in the height direction. It is installed on the formwork installation base 4.

In the present embodiment, the remaining mold 2 is a convex or concave mold fitting portion 26L, 26R that can be fitted to another remaining mold 2 positioned adjacent to the length direction and the height direction. , 26T, and 26B, and the above-mentioned form fitting portions 26L, 26R, 26T, and 26B are fitted to each other and other adjacent remaining form frames 2 to be erected and stacked.
In addition, the remaining formwork 2 erected side by side in the length direction and the remaining formwork 2 stacked in the height direction are connected to each other and between the anchor bars of the formwork installation base 4. A temporary installation member (for example, a stretched tube material that is placed on the mold installation base 4 and supports the remaining mold 2) that can be easily removed and removed until the tension bar 18 is stretched over is used. Temporarily installed.

1 and 4, a mold fitting portion 26L is provided on one end side (left end side in the figure) in the length direction (left and right direction in FIG. 1B), and the other end side (right end side in the figure). The structure of the remaining mold 2 provided with the mold fitting portion 26R is shown as an example. In this case, the mold fitting part 26L is provided as a step formed by denting the back surface 2u side of the short side surface on one end side into a rectangular shape over the entire side, whereas the mold fitting part 26R. Is provided as a step formed by denting the surface 2s side of the short side surface on the other end side in a rectangular shape over the entire side.
1 and 4 include a mold fitting portion 26T on one end side (upper end side in the figure) in the height direction (up and down direction in FIG. 1 (c)) and the other end side (lower end in the same figure). The configuration of the remaining mold 2 provided with the mold fitting part 26B on the side) is shown as an example. In this case, the mold fitting portion 26T is a protrusion (projection having a substantially semicircular cross-sectional shape) in which the one end side surface (top surface) 2T protrudes in a convex shape over the entire length in the length direction. ) Is provided at a substantially intermediate position in the thickness direction of the remaining mold 2 (the left-right direction in the figure), whereas the mold fitting portion 26B has a surface (bottom surface) 2B on the other end side. It is provided at a substantially intermediate position in the thickness direction as a groove (a groove having a substantially semicircular cross-sectional shape) formed in a concavely curved shape over the entire length in the length direction.

The configuration of the mold fitting portions 26L, 26R, 26T, and 26B is such that the mold fitting portions 26L and 26R in the length direction (left and right) can be fitted to each other and in the height direction (up and down). There is no particular limitation as long as the mold fitting portions 26T and 26B can be fitted to each other.
For example, the length direction (left and right) formwork fitting portions 26L and 26R protrude in a convex shape that can be fitted to each other in the same manner as the height direction (up and down) formwork fitting portions 26T and 26B described above. It is also possible to configure the protrusions (strips having a substantially semicircular cross-sectional shape) and grooves (grooves having a substantially semicircular cross-sectional shape) recessed in a concave shape.
Further, the mold fitting portions 26L, 26R, 26T, and 26B are continuously arranged over the entire length (all sides) of the arrangement surfaces (both side surfaces, top surface 2T, and bottom surface 2B of the remaining mold frame 2). Instead, a configuration in which a predetermined length is provided intermittently (divided) may be employed. As an example, it is also possible to adopt a configuration in which formwork fitting portions 26T and 26B in the height direction (up and down) are intermittently disposed at both end portions in the length direction and intermediate portions thereof.

  By providing the mold fitting portions 26L, 26R, 26T, and 26B in this manner with respect to the remaining mold 2, the left and right adjacent molds 2 (for example, each of FIGS. The remaining mold frame 2x and the remaining mold frame 2w) shown in FIG. 4 are erected side by side in the length direction by fitting the one mold fitting portion 26L and the other mold fitting portion 26R to each other. Further, the remaining molds 2 adjacent to each other in the upper and lower stages (for example, the remaining mold 2x and the remaining mold 2y shown in FIGS. 2 and 3 in FIGS. 2 and 3) are fitted into one mold. The mating portion 26T and the other mold fitting portion 26B are fitted to each other so that they are stacked in the height direction (an upsetting process and a stacking process).

For example, when standing in the length direction, one mold fitting part 26R of the two remaining molds 2 adjacent to the left and right is set to the other mold fitting part 26L or Since the mold fitting portion 26L serves as a guide for the other mold fitting portion 26R, the relative positioning of the remaining mold frames 2 adjacent to the left and right can be performed very smoothly.
In addition, when stacking in the height direction, the mold fitting part 26T of the lower mold 2 of the remaining mold 2 adjacent to the upper and lower stages is used as the mold fitting 26B of the remaining mold 2 of the upper mold. (When the top of the remaining mold 2 is used upside down, the mold fitting portion 26B of the lower remaining mold 2 is in contact with the mold fitting 26T of the upper remaining mold 2). ) Since it becomes a guide, the relative positioning of the remaining molds 2 adjacent in the vertical direction can be performed very smoothly.

In particular, the formwork fitting portions 26T and 26B in the height direction are formed as convexly curved protrusions (strips having a substantially semicircular cross-sectional shape) and concavely curved grooves (grooves having a semicircular cross-sectional shape). Thus, the groove surface of the concavely curved groove (formwork fitting portion 26B) provided on the bottom surface 2B of the upper residual mold 2 is a convex curve provided on the top surface 2T of the lower residual mold 2. The remaining mold frame 2 in the upper stage can be turned to the front surface 2s side or the back surface 2u side so as to be along the surface of the projection line (formwork fitting portion 26T). That is, when stacking, the formwork fitting part 26B of the upper remaining formwork 2 is turned to the front surface 2s side or back surface 2u side of the remaining formwork 2 with the formwork fitting part 26T of the lower remaining formwork 2 as a fulcrum. The inclination angle (legal gradient) of the upper residual mold 2 with respect to the lower residual mold 2 can be flexibly adjusted.
For example, when constructing a concrete frame as a sabo dam, the slope of the wall on the downstream side is often different (for example, it becomes a straight slope from watering). The inclination angle of the upper left form 2 relative to 2 can be adjusted flexibly (that is, it can flexibly cope with the setting of the legal gradient of the frame wall). This is a great advantage for constructing a concrete frame.

  In addition, the left and right left and right left molds 2 are vertically erected by stacking the mold fitting parts 26T and 26B in this manner, and by stacking them, the boundary part of the adjacent remaining molds 2 becomes a labyrinth structure. When the ready-mixed concrete is placed in the placement space to be described later, it is possible to effectively prevent the cast-out concrete from leaking out from the boundary portion of the adjacent residual formwork 2.

  In the present embodiment, a base block for positioning the lowermost remaining formwork 2 is disposed in the mold installation base 4 in the length direction of the casing wall surface. A convex or concave block fitting portion is provided so that it can be fitted to the mold fitting portion of the remaining mold 2 (specifically, the mold fitting portion 26B formed on the bottom surface thereof). ing.

  If the block fitting portion of the foundation block can fit the mold fitting portion of the lowermost remaining mold 2 and position the remaining mold 2, its form (size, shape, etc.) These are not particularly limited, and can be arbitrarily set according to the form of the form fitting part of the remaining form 2. As an example, in FIGS. 9A and 9B, the base block 10 is a rectangular parallelepiped, and is an intermediate portion of the top surface 10T in the short direction (left and right direction in FIG. 9A) and in the long direction (same as above). The structure of the foundation block 10 provided with the block fitting part 10a is shown over the full length of the figure (b) left-right direction). In this case, the block fitting portion 10a is configured as a protruding strip (a strip having a substantially semicircular cross-sectional shape) formed by projecting the top surface 10T of the foundation block 10 over the entire length in the longitudinal direction. The shape thereof is the same as the mold fitting portion 26T formed on the top surface 2T of the remaining mold 2 (substantially semicircular strip having the same radius of curvature).

In addition, in this embodiment, since the formwork fitting part 26B of the lowermost residual formwork 2 is made into a concave curve shape, the block fitting part 10a is made into the convex curve shape, but the basic block 10 is comprised. When the upside down of the remaining mold 2 is used upside down, the block fitting portion 10a has a groove (cross section) that is formed by recessing the top surface 10T of the foundation block 10 over the entire length in the longitudinal direction. What is necessary is just to comprise as a substantially semicircular groove | channel. At that time, the shape of the block fitting portion 10a is formed to be the same as the mold fitting portion 26B formed on the bottom surface 2B of the remaining mold 2 (substantially semicircular groove having the same radius of curvature).
Further, the block fitting portion 10a does not have to be continuously provided over the entire length of the top surface 10T in the longitudinal direction. For example, the block fitting portion 10a is arranged with a predetermined length only in the middle portion or both end portions in the longitudinal direction. It is also possible to adopt a configuration provided or a configuration provided at these three locations.

By configuring the block fitting portion 10a of the base block 10 in such a configuration, the block fitting portion 10a and the lowermost remaining formwork 2 (for example, remaining formwork 2x, 2w shown in FIGS. 2 and 3). By fitting each other with the mold fitting portion 26B, the lowermost remaining mold 2 can be easily and accurately positioned with respect to the foundation block 10, that is, the mold installation base 4.
Therefore, depending on the form of the concrete frame to be constructed, the plurality of foundation blocks 10 are continuously arranged in the length direction of the frame wall surface or intermittently arranged in advance, so that the lowermost remaining formwork 2 is formed. In a state where the frame is accurately positioned with respect to the formwork installation base 4, it can be easily arranged side by side in the length direction. As a result, the position of the lowermost remaining formwork 2 with respect to the formwork installation base 4 is determined, so that the remaining formwork 2 can be easily and accurately stacked in sequence in the height direction.

  In addition, by configuring the block fitting portion 10a of the base block 10 as a convex curved protrusion (a section having a substantially semicircular cross-sectional shape) as described above, the bottom surface 2B of the remaining mold 2 at the bottom stage is formed. The groove surface of the provided concave curved groove (formwork fitting portion 26B) is along the surface of the convex curved protrusion (block fitting portion 10a) provided on the top surface 10T of the foundation block 10. The lowermost remaining mold 2 can be rotated to the front surface 2s side or the back surface 2u side. That is, when the lowermost remaining mold 2 is erected with respect to the mold installation base 4, the mold fitting part 26 </ b> B of the lowermost remaining mold 2 is used as a fulcrum for the block fitting part 10 a of the foundation block 10. As shown in FIG. 5, the bottom residual mold 2 is rotated to the front surface 2s side or the back 2u side to flexibly change the inclination angle (legal gradient) of the bottom residual mold 2 with respect to the foundation block 10, that is, the mold installation base 4. Can be adjusted. 2 (b) and 3 (b), the lowermost remaining formwork 2 (remaining formwork 2x, 2w) is rotated to the back surface 2u side, and the foundation block 10 (formwork installation base 4) is moved. A configuration inclined with respect to this is shown as an example.

  In addition, by fitting the mold fitting portion 26B to the block fitting portion 10a and erecting the lowermost remaining mold frame 2, the boundary portion between the lowermost remaining mold frame 2 and the foundation block 10 is provided. It becomes a labyrinth structure, and when the ready-mixed concrete is placed in the placement space described later, it is possible to effectively prevent the cast-out concrete from leaking out from the boundary portion.

  The foundation block 10 may be made of the same concrete as the residual mold 2 described above. By using such a concrete, it is possible to achieve cost reduction effect and quality uniformity by mass production at the same factory as the remaining mold 2. Further, by using the concrete, it is possible to set the weight so that the foundation block 10 can be stably disposed on the formwork installation base 4. The foundation block 10 disposed on the formwork installation base 4 is provided with a predetermined fixing member (for example, joining with a mortar, fastening with a bolt and a nut, or welding with a metal fitting) at a predetermined position of the formwork installation base 4 after the placement. It may be fixed, or may be simply placed on the formwork installation base 4 if it can be stably fixed by its own weight.

2 (a) and 2 (b), a mortar bonding layer 14 is laid on the surface layer surface of the mold installation base 4 (the reference surface when the remaining mold frame 2 is erected and stacked) to lay the foundation block 10 A fixed configuration is shown as an example.
3A and 3B, when the foundation block 10 includes a height adjustment member 12 described later, the height adjustment member 12 increases the height of the foundation block 10 relative to the formwork installation base 4. After adjusting the height and fixing the height position, for example, by placing ready-mixed concrete in the space between the bottom surface 10B of the foundation block 10 and the formwork installation base 4, the foundation block 10 is placed in the formwork. What is necessary is just to fix to the installation base 4.

  Moreover, the foundation block 10 may be provided with a height adjusting member for adjusting the height with respect to the disposed mold installation base 4 and fixing the height position. FIGS. 3A and 3B show an example of the configuration of the foundation block 10 provided with the height adjusting member 12. In this case, the height adjusting member 12 has one end embedded in the hole 10h of the bottom surface 10B of the foundation block 10 and the other end communicated with the hole 10h and the rod-shaped metal fitting 12a that is in contact with the formwork installation base 4. Fixed to the periphery of the hole 10h and screwed to the outer periphery of the rod-shaped metal part 12a, the rod-shaped metal part 12a is moved in the length direction (that is, the height direction of the foundation block 10 with respect to the mold installation base 4). The nut-shaped adjusting portion 12b is configured to adjust the degree of protrusion of the bar-shaped metal part 12a from the bottom surface 10B of the base block 10 by moving the bar-shaped metal part 12a forward and backward, and at a predetermined protrusion length. A structure for fixing the position of the rod-shaped metal part 12a is employed.

  In the configuration shown in FIGS. 3A and 3B, four height adjustment members 12 are provided, one at each of the four corners of the bottom surface 10B of the base block 10, but the arrangement of the height adjustment members 12 is not limited. The installation position, the number of arrangements, and the like are not particularly limited to the illustrated configuration, and can be arbitrarily set according to, for example, the size and weight of the foundation block 10. The structure of the height adjusting member is not particularly limited to the above-described structure, and various known height adjusting members (height adjusting mechanisms) can be employed.

Thus, the foundation block 10 is provided with the height adjusting member 12, so that the bottom remaining mold 2 (as an example, FIG. ), (b) standing work in the longitudinal direction of the remaining formwork 2x, 2w), and further, the remaining formwork 2 and subsequent stages (for example, remaining formwork 2y, 2z shown in the figure) Can be installed and stacked in the height direction.
In addition, by setting the height of each height adjustment member 12 protruding from the bottom surface 10 </ b> B to be different, the foundation block 10 itself is disposed in an inclined state in the front, rear, left, and right directions with respect to the formwork installation base 4. It is also possible to do. Alternatively, regardless of the surface state of the formwork installation base 4, the foundation block 10 (top surface 10 </ b> T and bottom surface 10 </ b> B) can be positioned horizontally and disposed on the formwork installation base 4.

  For example, of the four height adjusting members 12 described above, two height adjusting members 12 positioned on the surface 2s side of the lowermost remaining mold 2 (for example, the height adjusting member shown in FIG. 3B). 12s) and the protruding height of two height adjusting members 12 (as an example, the same height adjusting member 12u) positioned on the back surface 2u side are set differently (as an example, By making the back surface 2u side (height adjustment member 12u) protrude from the front surface 2s side (height adjustment member 12s), the normal gradient of the wall surface of the concrete frame (the inclination angle of the remaining mold frame 2 with respect to the mold installation base 4) ), The foundation block 10 can be disposed to be inclined with respect to the formwork installation base 4.

The remaining molds 2 erected side by side in the length direction of the frame wall (remaining molds 2 on both sides) and the remaining molds 2 stacked in the height direction of the frame wall are connected to each other. (Linking process).
Accordingly, the joint portions 24u on the back surface 2u of the remaining mold 2 are connected to the remaining molds 2 arranged side by side in the length direction (both remaining molds 2 adjacent to each other) and stacked in the height direction. A connecting member 6 for connecting the remaining molds 2 to each other (previous and subsequent remaining molds 2) is provided in a projecting manner. 5 (a) and 5 (b) show a configuration in which the connecting member 6 is a plate material (plate material) having a L-shaped cross-sectional shape in which a through hole 6h having a predetermined size is drilled. The connecting member 6 projects a part of the plate material with the through-hole 6h drilled from the joint portion 24u of the back surface 2u of the remaining mold 2 and embeds the remaining portion of the plate material in the joint portion 24u. I am letting. In this case, the through-hole 6h is assumed to be a circular hole as an example, but a square hole (triangular hole or square) corresponds to the cross-sectional shape of a wedge-shaped member (for example, the connecting wedge 17 (FIG. 7)) described later. Hole) or the like.

  There are no particular limitations on the position and number of the connecting members 6 provided, but as shown in FIG. 1A, one at each of the four corners of the back surface 2u of the remaining mold 2 and the length direction (the same figure). It is preferable to arrange a total of six, one at each of both end portions in the height direction (vertical direction in the figure) at intermediate positions (the center positions of both long sides) in the horizontal direction. As a result, as shown in FIGS. 2 (a) and 3 (a), the remaining mold form 2 of the previous stage and the next stage are not overlapped with each other on the short side of the remaining form form 2 of the previous stage. When stacked so that the central part of the long side of the remaining formwork 2 of the step is positioned, it becomes possible to efficiently connect the remaining formwork 2 arranged on the top, bottom, left and right. It should be noted that the heights of the adjacent remaining molds 2 can be obtained by stacking the remaining molds 2 at a predetermined stage with respect to the remaining molds 2 at the previous stage and the next stage so that the short side positions thereof are alternated. The boundary line (contact line) in the direction does not become a straight line, and the wall strength of the concrete frame after construction can be improved.

When the remaining molds 2 arranged side by side in the length direction (remaining molds 2 adjacent to each other) and the remaining molds 2 stacked in the height direction are connected to each other, the connecting plate 8 (see FIG. 6 (a) to (c)) are mounted. As shown in FIG. 6A, the connecting plate 8 is a plate-shaped member having a rectangular planar shape, and the planar portion 8f has each remaining mold 2 (the joint portion 24u of the back surface 2u). A through hole (hereinafter referred to as a formwork connecting hole) 8h that allows the connecting member 6 to be inserted and exposes the through hole 6h of the connecting member 6 even when the connecting member 6 is inserted is perforated. Has been.
In this case, the connecting plate 8 is provided with return portions 8d continuously projecting along the long direction at both ends in the short direction of the flat surface portion 8f so as to strengthen the plate. .

As shown in FIG. 2, the mold connection holes 8 h include the predetermined residual molds 2 stacked alternately in the height direction as described above, and the two lower residual molds 2 adjacent to the predetermined residual molds 2. a) and the remaining molds 2z, 2x, 2w) shown in FIG. 3 (a) can be connected, or the predetermined remaining mold 2 and the upper two adjacent remaining The flat part 8f is perforated so that three of the molds 2 (for example, the remaining molds 2x, 2y, and 2z shown in the figure) can be connected. That is, one side in the short direction (lower left side of FIG. 6B) at both ends in the long direction of the plane portion 8f so that the connecting members 6 of the three remaining molds 2 to be connected can be inserted simultaneously. A total of three formwork connection holes 8h are drilled at the middle of the longitudinal direction, one at the middle of the longitudinal direction (one at the lower right) and one at the other end in the short direction (upper center in the figure). ing.
Note that the size, shape, arrangement, and the like of the formwork connection holes 8h can be inserted through the connection members 6 of the three remaining mold forms 2 to be connected at the same time, and even when the connection members 6 are inserted. What is necessary is just to set arbitrarily according to the magnitude | size, shape, arrangement | positioning, etc. of the connection member 6 so that the through-hole 6h of this can be exposed, and it is not specifically limited.

  Accordingly, as illustrated in FIGS. 10 and 11, the connection member 6 positioned at the lower center of the back surface 2 u of the remaining mold 2 (for example, the remaining mold 2 z) and the lower mold 2 are arranged in the lower stage. Of the two remaining molds 2, the connecting member 6 positioned at the upper right corner of the remaining mold 2 located on the left side toward the back surface 2 u (the same, the remaining mold 2 w), and the remaining mold 2 Three of the connecting members 6 positioned at the upper left corner of the remaining mold frame 2 (same as the remaining mold frame 2x) arranged next to the right side are inserted into the mold connecting hole 8h of one connecting plate 8 at the same time ( 10 (a), 10 (b) and 11 (a)), the connecting plate 8 is connected to the three remaining molds 2 with the through holes 6h of these connecting members 6 exposed from the mold connecting holes 8h. (FIGS. 10A, 10B and 11B).

  Alternatively, although not particularly illustrated, the connecting member 6 positioned at the upper center of the back surface 2u of the residual mold 2 (for example, the residual mold 2x) and the two residual molds stacked on the upper stage of the residual mold 2 Among the frames 2, the connecting member 6 positioned at the lower right corner of the remaining mold 2 located on the left side toward the rear surface 2 u (the same as the remaining mold 2 z), and the right side of the remaining mold 2 are aligned. Three of the connecting members 6 positioned in the lower left corner of the remaining mold 2 (same as the remaining mold 2y) are simultaneously inserted into the mold connecting holes 8h of one connecting plate 8, and the connecting members 6 The connection plate 8 can be attached to the three remaining molds 2 with all the through holes 6h exposed from the formwork connection holes 8h.

Thus, when attaching the connecting plate 8 to the three remaining molds 2, according to the mounting position, the drilling position of the mold connecting hole 8h is inverted in the vertical direction. The connecting plate 8 is mounted so as to be positioned upside down (as an example, when the remaining molds 2z, 2x, 2w shown in FIGS. 2 (a) and 3 (a) are connected to each other (FIGS. 10, 11). ), The mounting direction of the connecting plate 8 when the remaining molds 2x, 2y, 2z are connected to each other is the ground direction).
That is, since all the remaining formwork 2 can be connected only by the connection plate 8 in which the formwork connection holes 8h are arranged in a triangular shape as shown in FIG. 6B, the formwork connection holes 8h There is no need to prepare a plurality of types of connecting plates having different drilling positions.

  After the connection plate 8 is mounted, a wedge-shaped member (hereinafter referred to as a connection wedge) 17 is inserted into the through hole 6h of the connection member 6 exposed from the three mold connection holes 8h of the connection plate 8, and the connection Push in the wedge 17. As a result, the connecting wedge 17 is fixed to the through hole 6 h, and the connecting plate 8 interferes with the connecting wedge 17, so that it cannot be detached from the connecting member 6. As a result, the above-described three remaining molds 2 adjacent to each other are connected via the connecting plate 8 and the connecting wedge 17, and the remaining molds arranged in the length direction without being fastened by bolts and nuts or welding. The frame 2 and the remaining mold 2 stacked in the height direction can be easily connected.

  As shown in FIGS. 7A to 7D, the connecting wedge 17 has two inclined surfaces 17c that are gradually symmetrical from one end surface (narrow surface) 17s toward the other end surface (wide surface) 17b. The plate-like structure is formed so as to be inclined and to have a flat trapezoidal shape in plan view. In this case, the width of the narrow surface 17s is set to be smaller than the diameter of the through hole 6h of the connecting member 6, whereas the width 17b is a size of the long surface 17b. Is set larger than the diameter of the through-hole 6h. Note that the short dimension of the narrow surface 17 s and the wide surface 17 b are both set to the same dimension smaller than the diameter of the through hole 6 h of the connecting member 6.

By making the connecting wedge 17 into such a structure, the connecting wedge 17 is inserted into the through hole 6h of the connecting member 6 from the narrow surface 17s side and pushed into the wide surface 17b side from the narrow surface 17s side. The connecting wedge 17 can be brought into contact with the through-hole 6h on both the slopes 17c in the middle, and can be fixed to the through-hole 6h.
When the connecting wedge 17 is inserted into the through-hole 6h of the connecting member 6, the remaining mold 2 to which the connecting plate 8 is connected may be inserted from the upper side to the lower side and pushed in, but if necessary, The remaining mold 2 may be inserted from the lower side to the upper side and pushed.
Further, the connecting wedge 17 may be inserted (fixed) into the through hole 6h of the connecting member 6 so as to be perpendicular to the planar portion 8f of the connecting plate 8 (state shown in FIGS. 10 and 11). At that time, by adjusting the drilling position of the through hole 6h in the connecting member 6 and the size of the connecting wedge 17, the entire slope 17c of the connecting wedge 17 is inserted (fixed) into the through hole 6h. It is possible to simultaneously make contact with the planar portion 8f of the connecting plate 8 (state shown in FIG. 11 (b)). As a result, the connecting plate 8 and the connecting wedge can be firmly interfered with each other, and the connecting plate 8 can be stably removed from the connecting member 6.

However, the positional relationship between the connecting wedge 17 and the planar portion 8f (in other words, the insertion posture of the connecting wedge 17 with respect to the through hole 6h) is not particularly limited to the vertical state as described above. It is also possible to insert (fix) the wedge 17 into the through hole 6h of the connecting member 6 so that the flat portion thereof is substantially parallel to the flat portion 8f of the connecting plate 8 or by tilting the wedge 17. Even in the case where the remaining mold 2 is connected with the connection wedge 17 and the connection plate 8 (planar portion 8f) in such a positional relationship, the connection plate 8 and the connection wedge 17 remain in the remaining mold in the placing concrete process described later. Since it is integrally fixed together with the frame 2 with ready-mixed concrete, there is no particular problem.
However, considering that the connection wedge 17 interferes more stably (evenly) with the connection plate 8 and the connection plate 8 is more stably removed from the connection member 6, the connection wedge 17 can be connected. The positional relationship between the wedge 17 and the flat portion 8f (the insertion posture of the connecting wedge 17 with respect to the through hole 6h) is vertical as shown in FIGS. 10 and 11 (the connecting wedge 17 is substantially perpendicular to the flat portion 8f of the connecting plate 8). It is preferable that the entire slope 17c be in contact with the flat surface portion 8f).

Further, the configuration (size, shape, material, etc.) of the connecting wedge 17 can be easily fixed to the through hole 6h of the connecting member 6, and the connecting plate 8 is caused to interfere with the connecting wedge 17, thereby connecting the connecting member. If it can be made the state which cannot drop out from 6, it will not specifically limit. For example, the connecting wedge may have a conical shape, a so-called conical trapezoidal shape, or a rectangular conical shape whose cross-sectional shape forms a triangle or a quadrangle corresponding to the shape of the through hole 6h of the connecting member 6.
As an example, the connecting wedge has a so-called conical trapezoidal shape (one circular surface (small-diameter surface) is set to be smaller than the diameter of the through hole 6h of the connecting member 6, whereas the other circular surface (large-diameter). In the case of a structure in which the top end portion is missing so that the diameter surface) is set to be larger than the diameter dimension of the through hole 6h, the connecting wedge is connected to the through hole of the connecting member 6 from the small diameter surface side. When inserted through 6h and pushed in, the connecting wedge can be brought into contact with the through-hole 6h without a gap on the middle circumferential surface (conical surface) from the small diameter surface side to the large diameter surface side. It can be firmly fixed to the through hole 6h.
At that time, by adjusting the drilling position of the through-hole 6h in the connecting member 6 and the size of the conical wedge-shaped connecting wedge, the conical wedge is brought into contact with the through-hole 6h without any gap. The surface can be brought into contact with the flat portion 8f of the connecting plate 8 at the same time, the connecting plate 8 and the connecting wedge can be more firmly interfered with each other, and the connecting plate 8 cannot be detached from the connecting member 6 more stably. It can be in a state.

  Alternatively, instead of such a connection wedge 17 (FIGS. 7A to 7D), after the connection plate 8 is mounted, the connection member 6 exposed through the three formwork connection holes 8h of the connection plate 8 penetrates. By hooking a hook member (for example, a linear member having two linear portions continuous at a predetermined angle (hereinafter referred to as a hooking bar)) into the hole 6h, the connecting plate 8 is caused to interfere with the hooking bar. The three remaining molds 2 adjacent to each other may be connected to each other via the connecting plate 8 and the hooking bars, while being in a state in which the connecting member 6 cannot be removed.

In addition, in the configuration shown in FIGS. 6A to 6C, the connecting plate 8 protrudes from the plane portion 8f in addition to the formwork connecting hole 8h and is bridged between the formwork installation base 4. In order to connect the tension bars 18 (FIGS. 10 and 11) to be connected, through holes (hereinafter referred to as tension bar connection holes) 8t for inserting bolts (hereinafter referred to as connection bolts) 19b (FIG. 8A) are drilled. A pair of tensile bar connecting portions 8j is provided. In this case, the tension bar connecting portion 8j is a plate-like structure that is continuous so that the base portion jb and the protruding portion jd are L-shaped, and the base portion jb is parallel to the plane portion 8f. It is in close contact with each other and has a structure in which a tensile bar connecting hole 8t is formed in the protruding portion jd. The pair of tensile bar connecting portions 8j are formed by drilling the flat portion 8f of the connecting plate 8 so that the protruding portions jd are back to back and the respective tensile bar connecting holes 8t are concentrically opposed to each other. It is positioned and fixed to a triangular internal region having the apexes of the two mold connection holes 8h.
Although the fixing position of the tension bar connecting portion 8j may be other than the triangular inner region, in the installation step described later, the tension bar 18 is connected to the connection bolt 19b, and the remaining mold 2 is fixed to the mold. Considering installation in a well-balanced manner with respect to the installation base 4, the internal region is preferable.

  Further, the tensile bar connecting portion 8j has a protruding dimension of the protruding portion jd from the flat surface portion 8f inserted into the formwork connecting hole 8h, and the formwork connecting hole 8h of the connecting member 6 exposing the through hole 6h ( Is set to be larger than the projecting dimension from the flat surface portion 8f), and the drilling position of the tension bar connecting hole 8t to the projecting portion jd is set to the projecting side with respect to the flat surface portion 8f from the distal end portion of the connecting member 6. Set. With this setting, the protruding portion jd of the tensile bar connecting portion 8j can be protruded from the connecting member 6 with respect to the flat portion 8f, and the connecting bolt 19b inserted into the tensile bar connecting hole 8t is connected. It can be positioned on the projecting side with respect to the planar portion 8f with respect to the front end of the member 6 (FIGS. 10A and 11B). Thereby, when connecting the tension bar 18 and the connecting bolt 19b (joining by welding) in the installation process described later, the connecting operation with the connecting bolt 19b can be performed easily and smoothly without causing the tension bar 18 to interfere with the connecting member 6. (Fig. 11 (a)).

  In the connecting plate 8 having such a configuration, the tensile bar connecting portion 8j and the connecting plate 8 are fixed by, for example, a method of joining the base portion jb and the flat surface portion 8f by welding or bonding, a bolt and a nut, or the like. What is necessary is just to carry out by arbitrary methods, such as the method of fastening. Alternatively, the tensile bar connecting portion 8 j may be integrally formed with the connecting plate 8 simultaneously with the forming of the connecting plate 8.

Then, the connecting bolt 19b is inserted into one of the pair of tension bar connecting holes 8t arranged as opposed to each other (for example, the right tension bar connecting hole 8t in FIGS. 10A and 10B), and the other (the same, A nut (hereinafter referred to as a connection nut) 19n (FIG. 8 (b)) is screwed to the connection bolt 19b from the left tension bar connection hole 8t) side, and the connection bolt 19b and the connection nut 19n are connected to the tension bar connection portion. 8j is fixed.
In addition, what is necessary is just to perform the fixation operation | work of the connection bolt 19b and the connection nut 19n with respect to the tension bar connection part 8j in the arbitrary steps of the connection process mentioned above. For example, before the connection plate 8 is attached to the remaining mold 2, the connection bolt 19 b and the connection nut 19 n may be fixed to the connection plate 8 in advance, or the connection plate for the remaining mold 2. 8 after connecting the connecting member 6 to the formwork connecting hole 8h or after connecting the remaining formwork 2 with the connecting wedge 17 (that is, immediately before the installation step described later) and the connecting nut 19n. May be fixed.
Further, the configuration of the connecting bolt 19b and the connecting nut 19n shown in FIGS. 8 (a) and 8 (b) is an example, and these can be fixed to the tension bar connecting portion 8j, and will be described later. In the process, as long as the tension bar 18 can be bridged between the connecting bolt 19b and the anchor bar (not shown), the configuration (size, shape, etc.) is not particularly limited and may be set arbitrarily. .

  As a result, the connecting bolt 19b that is mounted on the remaining mold 2 to be connected and fixed to the tensile bar connecting portion 8j of the connecting plate 8 that connects these remaining molds 2 via the connecting nut 19n, and the installation of the mold By extending a tension bar 18 between anchor bars (not shown) protruding from the base 4, the remaining mold frame 2 stacked in the height direction and standing up in the length direction is formed as a mold frame. Installation on the installation base 4 is possible (installation process).

  The tension bars 18 extending between the connection bolts 19b of the connection plate 8 and the anchor bars (not shown) have the remaining formwork 2 connected by the connection plate 8 according to the normal gradient of the wall surface of the concrete frame. Both the connecting bolt 19b and the anchor bar are joined and fixed by welding so as to be installed in a state inclined with respect to the formwork installation base 4 in a predetermined direction (for example, the back surface 2u side) at a predetermined inclination angle (normal gradient). , Interconnected. At this time, according to the present embodiment, the remaining mold 2 is provided with the mold fitting portions 26B and 26T, and the foundation block 10 provided with the block fitting portion 10a is disposed on the mold installation base 4. Therefore, it is possible to flexibly adjust the inclination angle of the remaining mold 2 with respect to the mold installation base 4 and the inclination angle of the remaining mold 2 adjacent to the upper and lower stages, and flexibly adjust the gradient of the wall surface of the concrete frame. It can correspond to.

  The anchor bar hooks the tension bar 18 which is stretched between the connection bolts 19b of the connection plate 8 and has a U-shaped, J-shaped or L-shaped bar material having a portion to be welded thereto. And, it is provided in advance at a predetermined position on the formwork installation base 4 according to the wall structure of the concrete frame. The tensile bar 18 is in contact with the connecting bolt 19b of the connecting plate 8 and has a portion welded to the connecting bolt 19 at one end, and also has a portion to be hooked on the anchor bar and welded to the other end. It is a streak whose shape is J-shaped or L-shaped.

  6 (a) to 6 (c) only show the configuration of the connecting plate 8 provided with a pair of tensile bar connecting portions 8j as an example. For example, the connecting plate 8 includes the tensile bar connecting portions. It is also possible to adopt a plate configuration in which only one 8j is provided. In this case, if the connecting bolt 19b is inserted from one side of the tensile bar connecting hole 8t of the tensile bar connecting part 8j and the connecting nut 19n is screwed from the other side, these are fixed to the tensile bar connecting part 8j. Good.

Further, only one tensile bar connecting portion 8j or a pair of tensile bar connecting portions 8j as shown in FIGS. 6A to 6C is provided for the connecting plate 8, and the tensile bar connecting portion 8j It is also possible to adopt a configuration in which the tensile bar connecting hole 8t is drilled as a through hole (tensile bar connecting hole 8t) for inserting and connecting the tensile bar 18 spanned between the formwork installation base 4. . As a result, the tension bar connecting hole 8t of the connecting plate 8 attached to the remaining mold 2 to be connected and connecting these remaining molds 2 and the anchor bars (not shown) protruding from the mold setting base 4 The tension bars 18 are bridged between them, and they are erected side by side in the length direction, and the remaining mold frame 2 stacked in the height direction can be installed on the mold frame setting base 4.
In this case, the tension bar 18 spanned between the tension bar connection hole 8t of the connection plate 8 and the anchor bar (not shown) is connected by the connection plate 8 according to the normal gradient of the wall surface of the concrete frame. The tension bar connecting hole 8t and the anchor bar so that the remaining mold frame 2 is installed in a state inclined with respect to the mold installation base 4 at a predetermined inclination angle (normal gradient) in a predetermined direction (for example, the rear surface 2u side). Both may be joined and fixed by welding and connected to each other. The tensile bars 18 are hooked to the tensile bar connecting holes 8t of the connecting plate 8 and the anchor bars, and both ends having welded portions at both ends are J-shaped, L-shaped, or the like. do it.

Here, the above-mentioned standing process in the length direction of the remaining mold 2, the stacking process in the height direction, the connecting process thereof, and the installation process to the mold installation base 4 are performed on the wall surface of the concrete frame to be constructed. It is not necessary to perform all of the remaining molds 2 constituting the unit as one unit, and the respective steps may be performed by arbitrarily dividing each predetermined length (number) or predetermined height (number of steps).
Further, with respect to the remaining mold 2 for which the connecting process and the installation process have been completed, a temporary installation member that has temporarily installed the remaining mold 2 on the mold installation base 4 (for example, placed on the mold installation base 4). Remove the strut tube that supports the remaining formwork 2). Note that there is no particular problem even if the temporary installation member is left as it is without being removed.

  After completion of installation of the remaining mold 2 stacked in the length direction and the remaining mold 2 stacked in the height direction on the mold installation base 4, the remaining mold is casted and solidified. Together with the foundation block 10 disposed on the formwork installation base 4, a concrete frame having the remaining formwork 2 as a wall surface is constructed by integrating with the formwork installation base 4 (concrete placing step).

  For example, in the case of newly installing a concrete frame, the remaining molds 2 constituting the wall surface on one side (front side) of the concrete frame are erected side by side with a predetermined length (number), and a predetermined height (number of steps) is set. ) And is installed at a predetermined inclination angle (legal gradient) with respect to the formwork installation base 4. In addition, the remaining mold 2 constituting the front side wall surface is spaced a predetermined distance, and the remaining mold frame 2 constituting the wall surface on the other side (back side) of the concrete frame has a predetermined length (for example, the remaining side constituting the front side wall surface. Standing with the same length (number) as the mold 2 and stacking up to a predetermined height (the same height (stage) as the remaining mold 2 constituting the front side wall surface) On the other hand, it is installed at a predetermined inclination angle (the same inclination angle (normal gradient) as that of the remaining mold 2 constituting the front side wall surface). The inclination direction of the remaining mold frame 2 constituting the front side wall surface and the remaining mold frame 2 constituting the back side wall surface may be opposite (proximity direction), but may be the same direction.

  And by pouring the ready-mixed concrete into the space (placed space) sandwiched between the remaining mold 2 constituting the front side wall surface of the concrete frame and the remaining mold 2 constituting the back side wall surface, curing and solidifying the residual mold The frame 2 is integrated with the base block 10 together with the formwork installation base 4, and a concrete frame having the remaining mold frame 2 as the front side wall surface and the back side wall surface can be constructed.

  Further, when a concrete frame is constructed to increase the wall thickness of the existing frame, the remaining formwork 2 constituting the wall of the thickened concrete frame is separated from the wall of the existing frame by an amount corresponding to the increase in thickness. Standing up with a predetermined length (as an example, the same length as the existing housing), stacked up to a predetermined height (the same height as the existing housing), and a predetermined inclination angle with respect to the formwork installation base 4 (Installed at the same inclination angle (normal gradient) as the existing housing). The inclination direction of the remaining mold 2 constituting the thickened wall surface may be the same direction (proximity direction) as the existing wall surface, but may be the opposite direction (separating direction).

  Then, the remaining formwork 2 is poured into the space between the remaining formwork 2 constituting the thickened wall surface of the concrete frame and the existing wall surface (placed space), cured and solidified, so that the remaining formwork 2 becomes the foundation block 10. At the same time, it is possible to construct a concrete frame that is integrated with the formwork installation base 4 and uses the remaining formwork 2 as a thickened wall surface.

In addition, in the case of newly installing a concrete frame or in the case of increasing the wall thickness of an existing frame, the placement of ready-mixed concrete in the placement space may be performed at once over the entire concrete frame. However, it may be performed in multiple steps such as every predetermined number of remaining molds 2 in the length direction or every predetermined number of steps in the height direction.
Further, according to the present embodiment, the back surface 2u of the remaining mold 2 is formed with the recess 22u and the hole 22h to reduce the weight, and the surface area (that is, the contact area with the cast concrete). ) Is enlarged, it is possible to effectively increase the adhesion between the remaining mold 2 and the concrete placed in the placement space.

  As described above, according to the construction technique of the concrete frame using the remaining formwork according to the present embodiment (the construction method, the concrete case using the method, and the foundation block for the work), the mold is applied to the remaining formwork 2. By providing the frame fitting portions 26B and 26T and disposing the base block 10 having the block fitting portion 10a on the mold installation base 4, the standing and stacking operations of the remaining mold 2 can be made efficient. The construction period can be shortened. Further, the slope of the wall surface (the inclination angle of the remaining mold 2 with respect to the mold installation base 4 and the inclination angle of the remaining mold 2 adjacent to the upper and lower stages) is flexibly adjusted according to the form of the concrete frame to be constructed. It is possible to improve the degree of freedom of construction.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the structure of the residual mold form which concerns on one Embodiment of this invention, Comprising: (a) is a top view of a back surface side, (b) is a cross section in the position of 1b of the same figure (a) by the arrow The figure shown from a direction, (c) is a figure which shows the cross section in the position of 1c of the figure (a) from an arrow direction. It is a figure which shows the state which piled up the residual formwork alternately using the foundation block from the surface side, Comprising: (a) is a schematic plan view, (b) is a fitting with a foundation block and the lowermost residual formwork. Sectional drawing for demonstrating a combined state. It is a figure which shows the state which piled up residual formwork alternately using the foundation block provided with the height adjustment member from the surface side, Comprising: (a) is a schematic plan view, (b) is a foundation block and the lowest step Sectional drawing for demonstrating a fitting state with other residual formwork. It is a figure which shows the fitting state of the adjacent residual formwork, Comprising: (a) is the schematic which shows the fitting state of the residual formwork of length direction (left and right), (b) is a height direction ( Schematic which shows the fitting state of the remaining formwork of (upper and lower). It is a figure which shows the structural example of the connection member of a residual mold, Comprising: (a) is a top view, (b) is a side view. It is a figure which shows the structural example of a connection plate, (a) is a top view, (b) is a figure which shows a connection plate from the direction of the arrow 6b of the same figure (a), (c) is a connection plate. The figure shown from the direction of the arrow 6c of the figure (a). It is a figure which shows the structural example of a connection wedge, Comprising: (a) is a top view, (b) is a figure which shows a connection wedge from the direction of the arrow 7b of the same figure (a), (c) is a connection wedge. The figure shown from the direction of the arrow 7c of the figure (a), (d) is a perspective view which shows the whole structure of a connection wedge. (a) is a figure which shows the structural example of a connection bolt, (b) is a figure which shows the structural example of a connection nut. It is a figure which shows the structural example of a basic block, Comprising: (a) is sectional drawing, (b) is a side surface top view. It is a principal part enlarged view which shows the state which attached the connection plate to three adjacent residual formwork, connected mutually with the connection wedge, and was installed in the formwork installation base with the tension bar, (a) is upper surface The figure (b) is a figure shown from the direction of the arrow 10b of the figure (a). It is a figure for demonstrating the installation process for mounting to a formwork installation base with a tension | tensile_strength reinforcement, the connection process which mounts a connection plate to three adjacent residual formwork, and connects with a connection wedge mutually, (a) FIG. 4 is a diagram showing a connection process and an installation process, and FIG. 5B is a diagram showing a state after the installation process.

Explanation of symbols

2 Remaining formwork 4 Formwork installation base 10 Foundation block 10a Block fitting part 26T, 26B Formwork fitting part

Claims (8)

A step of arranging a predetermined number of remaining molds and standing on a mold installation base;
A process of stacking another remaining formwork in a predetermined number of steps on the standing formwork,
Connecting the standing residual formwork and the stacked residual formwork to each other;
Installing the connected residual formwork on the formwork installation base;
Including a concrete placing step of integrating the remaining formwork installed on the formwork installation base with the formwork installation base by placement concrete;
In the construction method of the concrete frame in which these residual molds are left as they are after construction and the wall surface of the frame is configured,
As described above, a plurality of remaining molds that are erected in a predetermined number and stacked in a predetermined number of stages are connected to each other via a connecting plate on the back side of the remaining molds, and the molds are installed via tensile bars. Installed on the base,
The connecting plate connects a plurality of remaining molds adjacent in the height direction and the length direction via a plurality of connecting members,
On the back surface of the connecting plate, a tension bar connecting portion that connects one end of the tension bar is provided,
The method for constructing a concrete frame using a residual formwork, wherein the tensile bar connecting portion is disposed at a substantially center of a region formed with each connecting point by a plurality of connecting members as apexes . A step of arranging a predetermined number of remaining molds and standing on a mold installation base;
A process of stacking another remaining formwork in a predetermined number of steps on the standing formwork,
Connecting the standing residual formwork and the stacked residual formwork to each other;
Installing the connected residual formwork on the formwork installation base;
Including a concrete placing step of integrating the remaining formwork installed on the formwork installation base with the formwork installation base by placement concrete;
In the construction method of the concrete frame in which these residual molds are left as they are after construction and the wall surface of the frame is configured,
A plurality of connecting members provided with through holes are provided on the back surface of the remaining mold,
As described above, a plurality of remaining molds that are erected in a predetermined number and stacked in a predetermined number of stages are connected to each other via a connection plate having a plurality of mold connection holes through which the connection member is inserted,
The connecting plate allows a predetermined connecting member of the remaining mold frame adjacent in the height direction and the length direction to be inserted into the predetermined mold frame connecting hole, and in the inserted state, the connecting wedge is inserted into the through hole. A method for constructing a concrete frame using a remaining formwork, characterized in that it is fixed . The connecting members are arranged at least one at each of the four corners of each remaining mold, one at each of the center positions in the length direction and at both end positions in the height direction,
The remaining mold is high so that the fitting position of the left and right remaining molds adjacent to each other in the length direction is positioned approximately at the center in the length direction of the remaining molds adjacent in the height direction. Stacked in the direction,
The connecting plate has one connecting member disposed at the opposite corner position of the left and right remaining molds adjacent in the length direction and one center located in the length direction of the remaining mold adjacent in the height direction. The construction method of the concrete frame using the residual formwork according to claim 2, comprising three formwork connection holes through which the connection members are inserted . The remaining formwork is installed on the formwork installation base via the tension bars,
On the back of the connecting plate, there is a tension bar connecting part that connects one end of the tension bar,
The construction of the concrete frame using the residual formwork according to claim 3, wherein the tension bar connection part is disposed in a triangular inner region formed with three formwork connection holes as apexes. Method. The tensile bar connecting portion is provided with a tensile bar connecting hole for connecting the tensile bar,
The residual formwork according to claim 4, wherein the tension bar connecting hole is set at a position farther from the back surface of the connecting plate than the tip of the connecting member inserted through the formwork connecting hole of the connecting plate. Construction method of concrete frame using The connecting wedge is inserted in the vertical direction, which is the stacking direction of the remaining formwork,
The construction of the concrete frame using the remaining formwork according to any one of claims 2 to 5, wherein a vertical region in a surface portion of the connection wedge facing the back surface of the connection plate is in contact with the back surface of the connection plate. Method. The remaining mold has a rectangular plate shape, and has a convex or concave mold fitting part that can be fitted with other remaining molds adjacent to each other in the length direction and height direction of the wall surface. It is erected by mating the formwork fitting part with other remaining formwork and stacked.
In the mold installation base, a base block for positioning the lowermost remaining mold is arranged in the length direction,
The lowermost remaining formwork is fitted with the above-mentioned formwork fitting part to the convex or concave block fitting part provided in the base block so that it can be fitted with the formwork fitting part. The method for constructing a concrete frame using the remaining mold according to claim 1, wherein the method is positioned with respect to the mold installation base. The base block is provided with a height adjusting member for adjusting a height with respect to the formwork installation base to be disposed and fixing the height position thereof. A method for constructing a concrete frame using the remaining form described in 1.

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