JP3406519B2 - Glue construction method and formwork - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction method and a formwork for constructing a grid-shaped concrete frame on an uneven or deformed slope.

[0002]

2. Description of the Related Art When constructing a concrete glue frame on a slope, a spraying frame method is used in which a wire mesh plate or a plastic plate is arranged in parallel on a slope ground and concrete is placed by a spraying method. In addition, a method of pouring a flowable ready-mixed concrete into a formwork to construct a glue frame is also adopted.

[0003]

[Problems of the prior art] In the spraying frame method, hard concrete with low slump is sprayed at high pressure, so that concrete does not flow out even with a simple formwork. In other words, concrete does not flow out from the gap between the formwork and the ground even with uneven ground, so it is possible to construct a glue frame with a simple formwork that stands side by side on the ground. It was difficult to construct uniform and high quality concrete due to the accumulation of repulsion loss. Further, since the concrete is conveyed by high-pressure compressed air, the fuel consumption is required to be about 10 times as high as that of the pumping method of the fresh concrete.
(The sprayed concrete can carry 10 cubic meters of fuel with about 250 liters of fuel per day, and the pumped concrete can carry 10 cubic meters of fuel with 25 liters of fuel per day.) There is a problem that it becomes low quality concrete. Next, the method of constructing the glue frame by pouring liquid ready concrete into the form is difficult to assemble the form with uneven ground and deformed slopes, especially closing the gap between the form and the ground. This requires a skilled worker to perform the work and requires a temporary holding formwork holding material to suppress the buoyancy acting on the formwork immediately after placing the concrete. It was

[0004]

The inventor has registered No. 9 as a ground reinforcement method as a method of constructing with a spraying method.
65827, registration No. 965831, and registration No. 1342993 as a glue frame were put into practical use, and a large number of so-called free frame construction methods have been constructed. However, the spraying method has a limit in quality. In order to solve the problem of concrete quality, a method of assembling an inverted U-shaped formwork on the slope ground and pouring concrete to construct a glue frame work is adopted, but if the ground has irregularities There is a gap between the ground and the concrete and it flows out. Therefore, the inventor attaches sheets to the bottom surface of the inverted U-shaped formwork, and as a construction method in which concrete does not flow out from the gap between the bottom of the formwork and the ground, a method of constructing a method frame No. 1763741, Formwork device registration No. 1737473, tubular formwork registration No. 194106
0 was proposed and it was put into practical use. As a form with a sheet,
A concrete casting method using a composite form and composite form registration No. 1453127 were proposed and put into practical use. Further, the present inventor has filed an invention application H8-920 in which a sheet is used for the bottom surface and a corner metal fitting that can cope with unevenness is used at the intersection of the glue frame
Proposed 65. However, the form with a sheet has the following problems.

<B> When concrete is poured into a cylindrical formwork having a sheet attached to the bottom surface of an inverted U-shaped formwork, the bottom sheet expands to generate buoyancy in the formwork. It is necessary to drive many anchors into the mountain. <B> With a sheet of the same width as the frame size of the formwork on the bottom of the cylindrical formwork, buoyancy does not occur, but the recesses of the ground are not filled with concrete and the ground and the frame bottom cannot adhere The effect of is halved. <C> The grid-shaped glue frame on the uneven and deformed slope is difficult to connect the vertical frame and the horizontal frame at the intersection, and it is difficult to process. Was needed.

In order to solve the problem of <a>, in which concrete is poured into a formwork and the sheet expands to cause buoyancy in the formwork, Japanese Patent Application H9-370082 is composed of wire mesh plates and sheets. I proposed a bottom structure with a double structure, but there was a problem with the fluidity of concrete. That is, since the lower surface is made of wire mesh, a separation phenomenon occurs in the process of concrete flowing down from the upper input port. That is, only the concrete mortar flows out from the metal mesh and only the coarse aggregate remains in the tubular form, making it difficult to construct a good quality concrete glue frame work.

The present invention has been made in view of the above points, and solves the problems such as the spraying frame method, the conventional concrete pouring method, and the composite form method with a sheet on the bottom surface. It provides a high-quality and economical construction method and formwork for concrete glue frame work even on uneven slopes.

[0008]

Means solving problems] Claim for the above problem points resolution 1
Alternatively, the invention described in 2 prevents the outflow of concrete and an inverted U-shaped upper mold frame composed of a deformable and flexible wire mesh and a plate body such as an iron plate in which fluidity of concrete is maintained, and be those pouring concrete therein combine lower mold of U宇状concrete irregularities of the slope is constituted by sheets which can be filled, both side edge portions of the plate member upwardly
Do not spread it on the locking part formed by folding or stacking it.
It is characterized by the provision of a notch that can be cut , and it is easy to construct because all the formwork is slaughtered, and the use of a plate on the bottom also prevents separation of concrete, so it is of high quality. Concrete glue frame
Ri, Ru can adapt to the deformed natural ground. Also, the contract
The inventions according to claims 1 and 2 are perpendicular to the engaging portion of the U-shaped lower mold.
A notch is provided in the direction to allow bending in the longitudinal direction
The thing can follow unevenness and deformation of the slope ground. I.e.
The problem that the stop part has a rib effect and cannot be bent and bent
Is the solution.

The third aspect of the present invention relates to assembling the formwork at the intersection of the lattice-shaped frame . In the conventional method, a method of arranging a cross-shaped intersection form at each intersection and connecting the intersection forms to each other with a straight form or connecting an L-shaped corner metal fitting is used. ing. All were difficult and expensive processes. According to the method for connecting a vertical frame and a horizontal frame of the present invention, a part of the side surface of the vertical frame for the vertical frame is cut open like a double door and an opening is provided to fix the side surface of the horizontal frame and the door. It is now possible to easily connect the vertical formwork and the horizontal formwork. Moreover, auxiliary members such as an intersection formwork and an L-shaped formwork are not required, and a great labor saving can be achieved.

The invention according to claim 4 is the cylinder according to claim 2.
-Shaped formwork, the upper formwork that is the intersection of the vertical and horizontal frames
Door-sided door on the side part with almost the same dimensions as the cross section of the weft frame
When the outer frame is opened to the outside and the upper frame for the horizontal frame is covered, the horizontal frame
The opening is provided with a door that is joined to the side surface . The concrete filled in the gap between the plate and the sheet expands the sheet and fills the uneven parts of the ground with concrete, and prevents the concrete from flowing out of the formwork, and the concrete glue frame that adheres closely to the slope ground is constructed. it can. Concrete is poured from above into a cylindrical formwork in which an inverted U-shaped upper formwork and a U-shaped lower formwork are joined together. Filled in the voids between the sheets. Sheet Tsu Do unnecessary expand and mold the like anchor preventing floating is effective mold to prevent the floating of the mold by the weight of concrete buoyancy is filled in a cylindrical mold even if for its It is
By joining the side part of the horizontal frame and the double door
Ru can be the connection of the frame-type frame and horizontal frame formwork easily. It is also possible to adopt a lower formwork that does not have an opening on the bottom surface. In the case of this construction method, concrete may first be poured into the cylindrical formwork and then poured from above into the space between the bottom of the formwork and the sheet. It is possible to construct a concrete glue frame that closely adheres to the unevenness of the ground.

According to a fifth aspect of the present invention, there is provided the above cylindrical formwork.
And the rebar holding material is rotatably attached to the bottom of the U-shaped lower formwork.
It is attached, easy to transport and on the slope
The labor of assembling the reinforcing bars can be saved.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. The formwork used in the present invention comprises an inverted U-shaped upper formwork 1 composed of wire mesh as shown in FIG. 1 and a U-shaped lower formwork 2 having a sheet attached to the lower surface of FIG.

The upper frame 1 is formed in the shape of an inverted U and is made of wire mesh which can follow the deformation and unevenness of the slope ground. The mesh of the wire mesh is such that the concrete does not leak out, and it depends on the slump of the concrete, but it may be a mesh of 10 mm or less, and the form 1 is buried and not removed even after the concrete is placed.

The lower formwork 2 of FIG. 2 has a U-shape in which both ends of the plate are bent and bent upward, and the lower formwork 2 follows the deformation of the ground in the locking portion 3 which is bent and bent upward. A plurality of notches 7 are provided so that the cuts 7 can be made. A plurality of openings 5 are formed in the bottom surface portion 4 so that concrete poured from above can be filled between the bottom surface portion 4 and the sheets 6. Further, a reinforcing bar holding member 8 is rotatably attached to the bottom surface portion 4. Further bottom part 4
Both ends of the sheets 6 that are larger than the width dimension of the bottom surface part 4 are fixed to the locking part 3 with screws or the like with a material that does not allow concrete to flow to the lower surface side. The sheets 6 may be flexible wire mesh.

FIG. 3 is a view in which the upper form 1 and the lower form 2 are assembled. The lower form 2 is installed on the slope ground and fixed to the ground by an anchor or the like, and the reinforcing bar 9 is reinforced. After that, the upper mold 1 is covered from above, and the engaging portion 3 of the lower mold 2 and the lower end of the side surface of the upper mold 1 are joined by screws.

FIG. 4 shows a method for connecting a vertical frame and a horizontal frame when constructing a grid-shaped frame. The side surface of the upper frame 10 for the vertical frame and the bending portion 17 are cut, and the side surface wire netting is bent outward in a double door shape to form the door 12 to form the opening 11. The upper frame 13 for the weft frame is formed of an inverted U-shaped wire mesh mold having a long upper surface and a short side surface 15, in which both longitudinal ends of the side surface portion 15 are cut off.

FIG. 5 is a connection diagram of the intersecting portions of the formwork. The upper formwork 13 for the weft frame is put over the side face of the formwork 10 for the vertical frame, and the door 12 and the side face part 15 of the weft frame are connected by screws or the like. . In this way, a connecting portion having an opening 11 is provided at each intersection of the vertical frame and the horizontal frame of the lattice-shaped frame.

Next, the construction method will be described with reference to FIGS. The lower formwork 2 is arranged and assembled in a grid pattern on the uneven or deformed slope ground. If necessary, use publicly known anchors etc. to fix to the natural ground. When the ground has unevenness or a deformed portion, as shown in FIG. 7, the notch 7 provided in the locking portion 3 of the lower mold form 2 can be widened or overlapped to conform to the deformed ground. Next, after arranging the reinforcing bar holding member rotatably attached to the lower formwork, cover the inverted U-shaped upper formwork 1 of the vertical frame from above the U-shaped lower formwork 2 as shown in FIG. Fix with the stop 3. Next, the inverted U-shaped upper mold 13 of the horizontal frame is covered from above by the method described in FIGS. 4 and 5, and fixed to the lower mold. As described above, the inverted U-shaped upper formwork 1 and the U-shaped lower formwork 2, and the vertical form upper formwork 10 and the horizontal formwork 13 at the intersection are arranged and assembled in a grid pattern on the slopes. After that, concrete input port 19
The concrete glue frame is constructed by pouring concrete into the formwork. Even after the concrete hardens, the formwork is not dismantled and it is buried.

[0019]

Since the present invention is constructed as in the embodiment, the following effects can be expected. <a> Since the formwork material is made of metal instead of wood, it can contribute to global environmental conservation. In addition, compared with the blown glue frame construction method, the pump pressure type glue frame construction method of the present invention can reduce the fuel consumption at the construction site to about 10%, so that the emission amount of carbon monoxide (CO2) to the atmosphere can be reduced. . <B> A plurality of cuts are provided in the locking part of the lower mold,
By constructing the upper formwork with a deformable wire mesh formwork, it is possible to assemble it by adapting it to the deformed slope ground with irregularities. Therefore, no skilled worker is required and the amount of poured concrete can be reduced. <C> Since it is a cylindrical formwork with a sheet attached to the bottom of the upper formwork and the lower formwork, and an opening is provided in the bottom of the U-shaped lower formwork, the poured concrete can be poured from the opening. It is filled between the bottom part of the lower mold and the sheet. for that reason,
Concrete is filled in the recesses of the ground, and the ground and the glue frame come into close contact with each other, so that the effect of the glue frame work can be sufficiently exerted. <D> Even if the sheet is expanded by filling the space between the bottom surface and the sheet through the opening on the bottom surface according to the configuration of the lower frame of the present invention, the sheet is filled between the upper frame and the U-shaped lower frame. Since the buoyancy of the form can be suppressed by the weight of concrete, anchors and temporary materials for buoyancy prevention can be saved. <E> In the method of joining the formwork intersections of the vertical frame and the horizontal frame, the upper frame side wire mesh of the vertical frame is opened like a door to the outside,
Moreover, since it is joined to the side wire mesh of the upper frame for the weft frame, the cross-shaped connecting material for intersections as in the prior art is not required, and the cost for the frame can be reduced. <F> Since a rotatable rebar holding member is attached to the bottom of the U-shaped lower formwork, it is easy to carry and labor for assembling the rebar on the slope can be saved.

[Brief description of drawings]

FIG. 1 Inverted U-shaped formwork composed of wire mesh

[Fig. 2] U-shaped lower formwork

FIG. 3 is a cross-sectional view in which a lower formwork and an upper formwork are assembled.

FIG. 4 is a view of a connection portion between a vertical frame and a horizontal frame.

FIG. 5 is a diagram in which a vertical frame and a horizontal frame are connected.

FIG. 6 is a perspective view of the lower formwork 2 arrangement.

FIG. 7 is a cross-sectional view of the arrangement on the sloped ground, which is deformed due to the unevenness of the lower formwork 2.

FIG. 8 is a perspective view of the assembled formwork.

[Explanation of symbols] 1 ... Upper formwork, 2 ... Lower formwork, 3 ... Locking part, 4 ... Bottom surface
Part, 5 ... Opening part, 6 ... Sheets, 7 ... Notch part,
  8 ... Reinforcing bar holding material, 9 ... Reinforcing bar, 10 ... Upper mold for vertical frame
Frame, 11 ... Opening part, 12 ... Door, 13 ... Top for horizontal frame
Formwork, 15 ... Side frame of horizontal frame, 16 ... Lower mold for horizontal frame
Frame, 17 ... Bending part

   ─────────────────────────────────────────────────── ─── Continued front page       (56) References JP-A-4-1325 (JP, A)                 Japanese Patent Sho 60-54459 (JP, B2)                 Japanese Patent Publication Sho 60-27773 (JP, B2)                 Japanese Patent Publication Sho 62-60541 (JP, B2)

Claims (5)

(57) [Claims] 1. A method for constructing a concrete frame on an uneven slope, wherein the fluidity of concrete such as an iron plate is maintained.
The both side ends of the plate member bent upward, the fold drip
On the bottom surface of the U-shaped plate body provided with the notches at both ends, the weight of the concrete filled in the process of filling the concrete prevents the floating of the U-shaped plate body. A U-shaped plate is provided with an opening, and both ends of a flexible sheet which is larger than the width dimension of the plate body and does not leak concrete, are fixedly attached to both end portions of the U-shaped plate body on the lower side of the bottom surface. A lower formwork, which has a double structure of a form plate and sheets, is used to spread the notch on the glued surface,
Install it so that it fits into the deformed ground,
After bending both ends of the net downward, covering the lower formwork with the upper formwork configured in an inverted U shape, and fixing the upper formwork to the locking part of the lower formwork to form a tubular formwork. , poured co <br/> Nkurito from above into the tubular mold in, concrete the cylindrical mold in
In the process of being filled into the U-shaped plate body from the opening.
A method for constructing a legal frame, characterized in that the space between the sheets is also filled . 2. The fluidity of concrete such as an iron plate is maintained.
Using a plate body that bends both ends of the plate body upward,
Spread or overlap to adapt to the deformed ground
A notch that can be attached
And a plurality of openings are formed at positions where the bottom of the plate body is prevented from being lifted up by the weight of the concrete filled in the process of being filled with concrete.
Serial engagement portion is larger than the plate body formed with plate member width dimension to the plate body underside, and U-shaped lower mold frame by attaching the deflection of the sheets that concrete does not leak to a double structure, A tubular form, wherein an upper U-shaped formwork made of wire mesh is covered with the lower form into a tubular form . 3. A method of assembling a vertical frame and a horizontal frame of a grid-like concrete glue frame, wherein a method of assembling a steel plate or the like is used.
Both sides of the plate that keeps the liquidity of the cleats up
Bending and providing notches at both ends of the bending
Concrete on the bottom of the U-shaped plate with the locking part
The weight of the concrete over bets to be filled in the course of being filled
Multiple openings at the locations that will prevent lifting
If the width of the plate is larger than the width of the plate,
Both ends of flexible sheets that do not leak
Fixedly attached to both ends of the U-shaped plate,
A lower formwork with a double structure of sheets
Spread or overlap to fit the deformed ground
Install it in a grid pattern, bend both ends of the wire mesh downward, and
The U-shaped vertical frame for the vertical frame is covered with the upper frame to be fixed.
The upper formwork for the vertical frame is opened to the outside in the shape of a double door and the opening is provided to have the same size as the cross section of the horizontal frame .
A vertical frame and a horizontal frame crossing , characterized in that both ends are bent downward and an upper U-shaped horizontal frame for the horizontal frame is covered from above the door to fix the door and the lateral side of the horizontal frame in an overlapping manner. How to assemble the formwork of the department. 4. A tubular formwork according to claim 2, vertical
On the side part of the upper frame for the vertical frame, which is the intersection of the frame and the horizontal frame,
Approximately the same size as the cross section of the weft frame
The side frame of the horizontal frame when the upper frame for the horizontal frame is covered
Tubular mold, characterized in that an opening is provided which includes a door portion for. 5. A rebar rotatably mounted on the bottom surface of the U-shaped lower formwork.
3. A holding material is attached to the holding material.
Alternatively, the tubular mold according to claim 4.