JP2961082B2 - Concrete formwork structure and method of constructing concrete structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a concrete formwork structure and a method for constructing a concrete structure.

[0002]

2. Description of the Related Art As one of the wall construction methods for constructing a wall of a building, a so-called form block in which rectangular form blocks are used and laid in a plane in the vertical and horizontal directions. Construction is generally known.

FIGS. 9 and 10 show an outline of a conventional general construction method of a building wall in this type of formwork block construction. In the figure, reference numeral 1 denotes a basic formwork block (H-shaped block) made of concrete.
A pair of rectangular panel portions 2 and 3 arranged in parallel with each other at a predetermined interval are provided. Is formed.

The height of the rib part 4 is the panel part 2,
3 is set lower than the height h, and is disposed apart from each other on the inner side in the longitudinal direction, whereby the hollow portion through which the vertical streaks 5 pass through the inside and the left and right butted portions is The space through which the horizontal streaks 6 pass is formed in the upper part, respectively.

Then, the formwork block 1 is laid up and down and left and right while arranging a vertical streak 5 and a horizontal streak 6 inside, and a cast-in-place concrete 7 is poured into the space and the hollow portion to form the vertical streak 5. By embedding the horizontal stripes 6 in the concrete 7, the walls of the building are constructed.

[0006]

However, in the above-mentioned conventional concrete formwork structure, since long reinforcing members are arranged in length and breadth, a large amount of long reinforcing members must be prepared. In addition, since the reinforcing bars are routed, the rebar arrangement work is troublesome especially in a small work place.

Further, in the above-mentioned conventional concrete formwork structures, all of them are mainly constituted by concrete blocks, and concrete is generally inferior in heat insulation performance. In this case, it is necessary to separately prepare a heat insulating material and attach it around the wall so as to surround the entire building. Further, at present, the size of the concrete form block is limited in order to facilitate transportation and handling. For example, in the case of the form block shown in FIG. 39
0 mm, height h is 190 mm, and width t is 150
Since each is set (standardized) to 180 and 200 mm, more formwork blocks are required, and there is a problem that it takes a considerable time to construct the wall. Further, in the case of a concrete form block, a wall having a thickness other than a predetermined thickness cannot be constructed.

In view of the above-mentioned circumstances, the present invention can perform a reinforcing work without using a long reinforcing material, has a sufficiently high reinforcing strength, is excellent in heat insulation performance, and further has excellent wall insulation. It is an object of the present invention to provide a concrete formwork structure capable of freely setting the thickness of a concrete form and a method of constructing a concrete structure.

[0009]

According to the present invention, a heat insulating panel made of a foamed synthetic resin is used as a mold frame member. Further, instead of a long longitudinal bar of a long object which has been conventionally used, a short rebar member having hook portions at both ends is used. Further, the short reinforcing member is fixed to a flat separator, so that reinforcing members are arranged in a vertical or horizontal direction via the separator.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In a concrete formwork structure and a method for constructing a concrete structure according to the present invention, a separator is installed between convex portions protruding from the inner surface of a formwork member.
The end of the reinforcing member is hooked on a long hole or projection formed in the flat separator. In addition, the reinforcing steel material is inserted between two separators that are obliquely opposed in the vertical direction or between two adjacent horizontal separators. By inserting such a short reinforcing material between the two vertically or horizontally adjacent separators as described above, a strong concrete formwork structure can be realized.

Further, by adjusting the length of the linear portion of the flat separator, it is possible to cope with various wall thicknesses.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a flat separator used in an embodiment of the present invention.

The flat plate-like separator 11 is made of, for example, a steel plate, and has locking portions 13, 13 having an L-shaped cross section at both ends of a rectangular flat plate portion 12. Further, projections 14 and 15 each having a hole 16 for locking a reinforcing bar are formed at substantially the center of the front and rear surfaces of the flat plate portion 12. In addition, an elongated hole 17 for reinforcing bar reinforcement is formed at one end of the flat plate portion 12.

On the other hand, as shown in FIG. 2, a concrete form 18 into which the flat separator 11 is inserted is provided.
Is made of a foamed synthetic resin and is composed of two rectangular frame members 19.

The form members 19, 19 of the present embodiment have the same shape and are formed by foaming in the same mold.
Here, the resin foam forming these mold members 19 is:
For example, foamed polystyrene, foamed polyurethane, foamed polyvinyl chloride or foamed polyolefin, and the like, formed by foaming a synthetic resin, the expansion ratio is, for example, 5 to 100 times, preferably 20 to 80 times,
More preferably, it is about 30 to 70 times.

As described above, by forming the mold member 19 from a foamed synthetic resin, the weight can be reduced, the mold member 19 itself has high heat insulating performance and sound absorbing effect, and further, corrosion prevention and cost reduction can be achieved. Down can be planned.

On the inner surface side of the form member 19, that is, on the inner surface forming the outer surface of the cast concrete, convex portions 20 for attaching a separator are integrally formed, and these convex portions 20 are vertically formed. A through hole 24 is formed. The shape of the projection 20 is not particularly limited, and the hole 24 may be a groove.

A hollow portion 21 communicating vertically is formed between the projections 20. The convex portions 20 are formed at a predetermined pitch p ₁ , and
It is located from the end face of the frame members 19 inward by the pitch p ₁ of the half of the distance a (p _1/2), whereby as shown in FIG. 3, the two frame members 19 lateral direction when arranged against, even between adjacent frame members 19 is a hollow portion 21 communicating with the vertical direction at a predetermined pitch p ₁ is adapted to be configured.

Further, since the convex portion 20 is formed substantially at the center in the height direction, a space 22 is formed above and below the convex portion 20 so as to communicate laterally.

The hollow portion 21 is provided with an EP for signal distribution.
S (Electrical piping space), DS for air conditioning duct
(Duct space) and PS (piping space) for water supply / drainage pipes, etc. In some cases, vertical streaks extending in the vertical direction can be inserted into the inside. Further, the space 22 connects the hollow portions 21 with each other.

As shown in FIG. 4, the locking portion 13 of the plate-like separator 11 for connecting the form member 19 is inserted into the hole 24 of the convex portion 20. Here, as described above, since the weight can be reduced by forming the form member 19 with the foamed synthetic resin, as shown in FIG. 2, for example, the length L is about 900 mm, and the height H ₁ is set to the about 300 mm. Further, as shown in FIG. 5, the width T _{1 in} a state where the separator 11 is inserted between the mold members 19, 19 can be appropriately set, but is about 240 mm in the embodiment.

The outer surface of the form member 19 is a wall material application surface 26. That is, the wall material application surface 2
Numeral 6 is for forming a wall material by applying an exterior material such as cement mortar 27 or the like, and a large number of base grooves 28 are formed in parallel over substantially the entire area.

As shown in FIG. 2, the base groove 28 is formed by a peripheral wall groove 30 which rises in the thickness direction around a tapered surface 29 which gradually inclines upwardly in a thickness direction. It is configured so as to be substantially U-shaped.

After laying out the formwork members 19 having the base grooves 28 formed on the outer surface, concrete 39 is poured into the inside as shown in FIG.
Then, for example, a cement mortar 27 or the like is applied to form an outer wall. At this time, a part of the cement mortar 27 is held so as not to enter the base groove 28 and flow downward.

Although the concrete form 11 for forming the wall is formed by in-mold foam molding, the concrete form 11 is formed by post-processing using an ironing iron having an outer shape conforming to the shape of the base groove 28, and further by cutting. Can be formed.

Further, in this embodiment, the underlying groove 28
Are arranged in parallel, that is, at equal intervals in the vertical and horizontal directions, but it is a matter of course that the base grooves 28 may be arranged in a staggered manner or randomly.

In this embodiment, in order to stack one of the mold members 19 while positioning them relative to each other with the mold members 19 themselves, the upper and lower end surfaces of the mold members 19 are as follows. It is provided with a concave and convex fitting portion.

That is, on the upper end surface of the form member 19, two rows of concave and convex fitting portions are formed along the length direction. Among them, the inner concave / convex fitting portion includes the convex portion 31 and the concave portion 3.
2, and the outer concave / convex fitting portion is composed of a convex portion 33 and a concave portion 34.

On the other hand, on the lower end surface of the mold member 19, a convex portion and a concave portion each having a shape substantially complementary to the upper end surface are formed. That is, on the lower end surface inside the form member 19,
The convex portions 35 corresponding to the concave portions 32 and the concave portions 36 corresponding to the convex portions 31 are formed alternately. Further, concave portions 37 corresponding to the convex portions 33 and convex portions 38 corresponding to the concave portions 34 are formed alternately on the outer lower end surface of the mold member 19.

As described above, the concave and convex fitting portions having mutually complementary shapes are formed on the upper and lower end surfaces of the form member 19. In addition, concavo-convex fitting portions formed of ridges extending in the vertical direction are formed at both left and right end portions.

On the other hand, in this embodiment, as shown in FIG. 6, in place of the conventional long vertical or horizontal streaks, short hooked reinforcing bars 41, 42 having hook portions 40, 40 at both ends, as shown in FIG. Is used. Here, the reinforcing bar 41 with a hook
The difference between this and the reinforcing bar 42 with a hook is that the length of the straight portion is different. That is, as shown in FIG. 7, the shorter hooked reinforcing bar 41 is used in place of the conventional horizontal bar, and is disposed obliquely in the horizontal direction. The longer hooked reinforcing bar 42 is used in place of the conventional vertical bar, and is inserted obliquely between separators that are obliquely located in the vertical direction.

Hereinafter, a work for assembling a concrete formwork for constructing a wall using the above-described formwork member 19, the plate-like separator 11, and the reinforcing bars 41 and 42 with hooks will be described. The procedure will be described.

First, the two form members 19, 19 are arranged on the form member 19 arranged inside the building and the form member 19 arranged outside the building with a predetermined space therebetween. . While performing this operation, the plate-shaped separator 11 is bridged between the convex portions 20 of the pair of facing frame members 19, and the interval between the frame members 19 is regulated to be constant. The length of the straight portion of the flat separator 11 is set in advance to an appropriate length based on the thickness of the wall. In this way, the plate-like separator 11 is placed between the pair of facing frame members 19, 19 as shown in FIG. As shown in FIG. 7, every other posture of the separator 11 is 180 degrees.
It is preferable to install while changing the degree.

In this manner, the pair of form members 1
After the plate-like separator 11 is inserted between the members 9, the second-stage mold members 19, 19 are fitted thereon, and the separator 11 is similarly inserted.

Then, when the laying of the formwork members 19 in the first one or two levels or further up to three levels is completed,
As shown in FIG. 7, the hooked reinforcing bars 41 and 42 can be bridged between the adjacent separators 11 as follows.

That is, first, the separator 11 inserted between a pair of form members 19 (not shown) arranged in the bottom row A, and another flat plate separator 11 adjacent thereto.
In each of the long holes 17, the end of the shorter reinforcing bar 41 with a hook is locked. In this case, since the separators 11 arranged in the row A in the horizontal direction are arranged in directions different from each other by 180 °, the reinforcing bars 41 with hooks locked by these are arranged in the horizontal direction as shown in the figure. It is arranged while bending to draw a letter. The ends of the two hooked reinforcing bars 41 are inserted into one elongated hole 17.

In rows B and C, as in row A, hooked reinforcing bars 41 are inserted. On the other hand, the long reinforcing bar with hooks 42 is obliquely bridged between a number of separators 11 arranged in row B and a number of separators 11 arranged in row A therebelow. To extend the long hooked reinforcing bar 42, for example, one hook portion 40 of the hooked reinforcing bar 42 is hooked on the reinforcing bar locking projection 14 provided on the upper surface of the separator 11 in row A, and the other hooked bar is hooked. Part 40
May be hooked on the projections 15 for locking the reinforcing bars formed on the lower surface of the separator 11 in the row B. Thus, when the hooked reinforcing bar 42 is inserted obliquely between the projections 14 and 15 of the separator 11 positioned diagonally in the rows A and B, the hooked reinforcing bars 42 are inserted into every other space. A cross portion X is formed. In addition, this cross part X
It is formed in every other space in the vertical direction.

In this way, the reinforcing bars with hooks 41 and 42 are incorporated into the rows A, B and the row C above them. As described above, the lower mold member 19 and the upper mold member 19 can be connected one by one to the upper row of the row C, and the molds are assembled at a predetermined height. be able to.

After the assembling of the form member 19 in the vertical and horizontal directions and the arrangement of the reinforcing bars 41 and 42 with hooks are completed,
As shown in FIG. 5, concrete 39 is poured into the hollow portion 21 and the space 22, and thereafter, a wall material such as mortar 27 is applied into the base groove 28 on the indoor side and the outdoor side. Alternatively, a wall of a building can be constructed by attaching an interior plate.

In addition, a wall having a heat insulating structure can be quickly and easily constructed using a considerably large wall form in the same manner as a normal form block. According to the present embodiment, the conventionally required linear long reinforcing bar is not required. Moreover, since the hook portions 40 are locked on both sides of the plate-like separator 11, the strength of the reinforcing bars arranged increases. Further, since the separator 11 is pulled from multiple directions by the short hooked reinforcing bars 40 and 41, the strength of the mold is increased.

Moreover, as the reinforcing bars with hooks 41, 42, two types of reinforcing bars with hooks 41, 42 which are set to a certain length in advance may be prepared. Muscle work can be performed easily.

Further, in the above embodiment, one long hole 17 was formed in the separator 11. However, as shown in FIG.
One may be provided. In this way, if the elongated holes 17 are provided one at each end of the separator 11, two hooked reinforcing bars 41, 4 are provided between the separators 11, 11 arranged side by side in the lateral direction.
1 can be handed over. This makes it possible to form a cross portion X where the reinforcing bars intersect between the separators 11 arranged adjacent to each other in the lateral direction.

Further, in the above embodiment, one reinforcing projection 14 and 15 are provided on each of the upper and lower surfaces. Instead, two reinforcing projections 14 are provided on the upper surface.
If two projections 15 are provided on the lower surface, the cross portion X where the reinforcing bars intersect can be formed in a continuous space.

By forming the cross portions X where the reinforcing bars intersect continuously in the vertical and horizontal directions in this manner, the strength of the reinforcing bars arranged can be further increased. Further, in the above-described embodiment, the reinforcing bar fixing portions 14 and 15 formed of plate-like projections formed separately are provided.
Is fixed by welding, but instead of this, a cut may be formed in one sheet material, and the cut may be formed by raising the cut.

As described above, in the concrete formwork structure according to the present invention, the number, the forming method, and the shape of the holes and the projections provided on the flat separator 11 are not limited to the embodiment. Further, the number of the protrusions 20 formed on the inner surface of the mold member 19 is not limited to two, and may be one or three or more.

In order to further increase the strength of the reinforcing bars, long longitudinal bars can be arranged as required. Further, the cross portions X between the hooked reinforcing bars 41 and the hooked reinforcing bars 42 may be bound by binding wires. The separator 11 may not be made of a metal material, and may be made of, for example, a synthetic resin.

[0047]

As described above, according to the concrete formwork structure and the method of constructing a concrete structure according to the present invention, a standardized hook having a short length is used instead of using a long reinforcing bar. Since the rebar is used, it is possible to easily perform the reinforcing work in the vertical and horizontal directions even in a narrow place. In addition, since the separator is pulled from multiple directions by the reinforcing bar with hooks, the strength of the mold is sufficiently increased.

Furthermore, by using this separator, when a mold member made of a foamed synthetic resin having a heat insulating structure is used, the mold members can be stacked one by one from below to above. .

Further, since a plurality of vertical streak members having the same shape and width streaks having the same shape are used, no trouble is required in preparation for processing, and the thickness of the wall can be freely set.

[Brief description of the drawings]

FIG. 1 is a perspective view of a separator used in a concrete formwork structure according to one embodiment of the present invention.

FIG. 2 is a perspective view of a mold member made of a foamed synthetic resin employed in the embodiment.

FIG. 3 is a front view when the form members shown in FIG. 2 are arranged in a horizontal direction.

FIG. 4 is an enlarged perspective view showing a portion where the separator is attached to the form member of the embodiment.

FIG. 5 is a sectional view of a concrete formwork structure according to the embodiment.

FIG. 6 is a plan view of a reinforcing bar member employed in the embodiment.

FIG. 7 is a perspective view showing a reinforcing bar assembly structure when the separator according to the embodiment is employed.

FIG. 8 is a perspective view showing a reinforcing bar assembly structure when a separator according to another embodiment of the present invention is used.

FIG. 9 is a perspective view showing a conventional mold block.

FIG. 10 is a perspective view showing a state when a wall is constructed using a conventional form block.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Separator 13 Locking part 14, 15 Projection 17 Elongated hole 18 Concrete formwork 19 Formwork member 20 Convex part 39 Concrete 41, 42 Reinforcement with a hook (rebar material)

Claims (6)

(57) [Claims] 1. A pair of formwork members made of a foamed synthetic resin, which are arranged facing each other at a predetermined interval and have a projection for mounting a separator on the inner surface on the side in contact with the poured concrete; A plate-like separator detachably locked between the projections of the pair of form members, and a reinforcing member inserted between the plate-like separator and another plate-like separator adjacent thereto. A concrete formwork structure characterized in that an end of the rebar member is detachably engaged with a long hole and a projection formed in the flat separator. 2. The concrete formwork according to claim 1, wherein one or two of the projections for retaining the reinforcing bar are formed on each of the front and rear surfaces of the flat separator. Construction. 3. The concrete formwork structure according to claim 1, wherein one or two of the elongated holes for retaining the reinforcing bars are formed in the flat separator. 4. A pair of form members made of a foamed synthetic resin having a convex portion for mounting a separator formed on the inner surface on the side in contact with the cast concrete, and are installed facing each other at a predetermined distance and facing each other. The distance between the frame members is set by inserting a flat plate separator between the projecting portions of the pair of frame members, and further, one flat separator and another flat separator adjacent thereto are set. The end portion of the reinforcing member is detachably engaged with a long hole and a projection formed in the flat separator, and connected by a reinforcing member having a predetermined length. Construction method of concrete structure. 5. The projection for the reinforcing bar locking is concrete formwork according to claim 4, characterized in that it is one at a time or formed two each respectively on the front and back surfaces of the plate-like separator How to build the structure. 6. A method for constructing a concrete structure according to claim 4 or 5 long holes for the reinforcing bar locking is characterized in that it is one or two formed in the plate-shaped separators.