JP3459184B2 - Formwork support - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a formwork supporter which is arranged at the time of foundation work for a building made of steel frame concrete or reinforced concrete.

[0002]

2. Description of the Related Art Conventionally, foundation work has been carried out in order to transmit a vertical load due to the weight of a building or the like and a horizontal load applied to the building due to wind or an earthquake to the ground. Foundations include independent foundations, cloth foundations, composite foundations, and solid foundations.
In all of the foundation works, gravel and split-grid works will be carried out, then concrete will be poured, then rebar and anchor bolts will be placed, and concrete for slabs will be placed. However, various studies have been made because it is difficult to keep the cover thickness of the reinforcing bar constant. For example: a. Japanese Utility Model Laid-Open No. 61-90942 discloses that "a fixing portion for fixing the reinforcing bar to an end of a supporting body straddling between reinforcing bars such as a concrete slab and an adjusting bolt is mounted near the central part. A ruler support fitting for concrete pouring tops is disclosed. b. In Japanese Utility Model Publication No. 7-4283, "Anchor bolt fasteners are continuously provided at appropriate intervals on the swing-off angle, and the anchor bolt fasteners cross the swing-off angle to form a pair of installation angles. An anchor bolt installation jig is disclosed in which a reinforcing bar suspension is provided on the level adjustment angle. c. Japanese Unexamined Patent Publication No. 60-26768 discloses that "a mold is formed in the outer shape of basic concrete, the mold is assembled at a predetermined position, and then the concrete is poured between the molds to be used as a surface material for the concrete. A method of placing basic concrete is disclosed. d. Japanese Unexamined Patent Publication No. 62-268465 discloses that "abandoned concrete fixing member, a plurality of support rods erected on the abandoned concrete fixing member, and height-adjustable attachments to these support rods at the footing top end position. A footing top position locator having an adjusted locating member for mounting a pair of facing base molds is disclosed. e. Japanese Unexamined Patent Publication No. 5-331864 discloses that "a base concrete formwork that forms at least a side upper surface and a side surface of base concrete is supported, and an installation portion that projects in the horizontal direction is provided at the lower end of a support device pillar. , A basic concrete formwork supporting device in which a receiving groove opened upward so that a reinforcing bar is fitted from above is provided on the column. f. Japanese Unexamined Patent Publication No. 7-292683 discloses "an anchor frame that is formed in a foundation and fixes the lower end of a steel-framed rebar pillar that is erected on the foundation, and includes a plurality of vertically extending vertical frames, It consists of a horizontal frame that is horizontally fixed to these vertical frames, and this horizontal frame is formed with an engaging portion that engages with a basic columnar bar that is joined to a column main bar that constitutes the steel-frame rebar column, An anchor frame having anchor bolts for fixing a lower end portion of a steel frame column constituting the steel frame rebar column is disclosed. g. Japanese Unexamined Patent Publication No. 8-41893 discloses “anchor bolt for constructing a steel foundation beam by combining steel foundation beam units on an appropriate plane frame and fixing the steel foundation beam to an anchor bolt at an appropriate position. A construction foundation is disclosed in which the plates are fixed together and these are surrounded by a range of concrete. h. Japanese Unexamined Patent Publication No. 9-3023675 discloses "A method of installing an anchor bolt to which a lower end of a steel frame column is tightly attached at the time of placing a concrete foundation, in which a square opening having a square shape is formed in the center of a set plate. The position of the center of each side of the template was adjusted to the position just above each vertex of the square opening by lowering the plumb bob from the center of each side of the square template having the length of one side equal to the diagonal length of Later, an anchor bolt installation method for fixing a set plate to an anchor bolt installation position is disclosed. i. Japanese Utility Model Laid-Open No. 61-187852 discloses, "A horizontally projecting arm portion is provided on one side portion of a support body having a fastening portion that is detachably fastened at a required position with respect to a reinforcing bar, and the tip of the arm portion is provided. There is disclosed a construction form supporting tool provided with a form receiving piece that is attached and supported from the inner surface of the form. j. In Japanese Utility Model Publication No. 5-24762, "a supporting member formed in a substantially gate shape by a metal wire is erected on a substrate arranged on a foundation made of paving stones and the like, and a pair of cloth foundation concrete for the supporting member is placed on the supporting member. In a support tool adapted to support a formwork, a fitting portion having a substantially L-shaped cross section is punched and formed on the substrate, and a support piece for supporting the formwork concrete formwork is formed on the support member, and a lower end. And a pair of leg pieces attached to the support piece so as to be located immediately below the cloth foundation concrete formwork, and the leg pieces and the side pieces. A cloth foundation concrete formwork comprising a crosspiece, a recess for supporting the reinforcing bar for the cloth foundation at the center of the upper part of the support member, and a pair of frame-shaped portions for preventing deformation on both sides of the recess. Support device ".

[0003]

However, the above conventional formwork support for concrete has the following problems. (1) It is difficult to uniformly secure the thickness of all coverings of the formwork, the reinforcing bars, and the anchor bolts, and there is a problem in that the work in the post process is hindered. (2) After the concrete for slabs has been cast, the anchor bolts have been put back in their proper positions by reassembling before the concrete for slabs dries, which causes a problem that work is troublesome and workability is poor. Was. (3) After pouring concrete for slabs, it is necessary to raise the nails and flush the concrete until the nails are hidden, and the level must be adjusted, which is a problem in that workability is poor. (4) There is a problem that when concrete flows, it is pushed by pressure and is displaced. (5) There is a problem in that it is impossible to prevent rainwater and the like from entering the concrete body, and the concrete pieces are separated due to acid rain and the like. (6) There is a problem that transportability is lacking.

The present invention is to solve the above-mentioned conventional problems, and firmly supports the formwork, the reinforcing bars and the anchor bolts,
Not only can the cover thickness be ensured uniformly, but by disposing a level stick, the level of the concrete for slabs can be adjusted in a small number of steps, and the horizontal form supporting portion and the orthogonal form supporting portion can be adjusted. It is an object of the present invention to provide a formwork support tool capable of preventing deviation due to pressure when concrete flows because it is formed in an orthogonal shape, significantly improving workability, and significantly shortening the construction period.

[0005]

Means for Solving the Problems In order to solve the above-mentioned problems, a form supporting tool of the present invention comprises a rod-shaped main body, a reinforcing bar holding portion formed in a predetermined portion such as a central portion of the main body, and the reinforcing bar. An anchor bolt holding portion formed in a predetermined portion orthogonal to the holding portion, and a horizontal frame support horizontally formed at one end of the main body.
The holding part and the other end of the main body are orthogonal to the horizontal formwork supporting part.
And an orthogonal formwork support portion formed in . With this configuration, it is possible to firmly support the formwork, the reinforcing bars, and the anchor bolts, and ensure a uniform cover thickness. Since the horizontal form support part and the orthogonal form support part of the main body are formed orthogonally, it is possible to provide a form support tool capable of preventing displacement due to pressure when concrete flows.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS To achieve this object, a mold support according to claim 1 of the present invention is a rod-shaped main body and a reinforcing bar holding member formed in a predetermined portion such as a central portion of the main body. Department,
An anchor bolt holding part formed in a predetermined part orthogonal to the reinforcing bar holding part and horizontally formed at one end of the main body
The horizontal formwork support and the horizontal formwork support on the other end of the body.
An orthogonal formwork support portion formed orthogonal to the holding portion is provided. This configuration has the following effects. (1) By disposing the formwork support between the formworks and holding the rebar in the rebar holding portion, the interval between the formwork and the rebar is kept constant, so that the uniform cover thickness can be secured. . (2) By holding the anchor bolt in the anchor bolt holding portion, the anchor bolt can be held vertically, and the work of re-mounting can be omitted and workability can be improved. (3) Since it is lightweight and strong, it has excellent transportability, and is easy to handle without being chipped or damaged even if it is handled roughly at the construction site. (4) The horizontal formwork support part and the orthogonal formwork support part of the main body are orthogonal to each other.
Because it is formed, the couple will work and the main body will not shift between the molds.
Peg. Here, the main body is made of an alkali-resistant synthetic resin such as polyethylene, polypropylene, polystyrene, polyamide, polyvinyl chloride, polyvinylidene chloride, ABS, fluororesin, chlorinated polyether resin or the like and inorganic filler (resistant A synthetic resin made of a composition with a composition other than glass fiber not subjected to alkali formulation), a metal such as stainless steel, or a ceramic or mortar is used. Since a synthetic resin or a composition made of a synthetic resin can be mass-produced by injection molding or the like, the cost can be reduced and the productivity and workability can be improved, which is preferable. Since stainless steel has a reinforcing effect, it is particularly preferable for construction of a portion having reinforcement. The shape of the reinforcing bar holding portion may be any shape as long as it can be fitted with at least the deformed reinforcing bar. Specifically, the recess formed by expanding the opening formed in the main body is generally used, but if it is made of synthetic resin or the like and has some elasticity, the opening is fitted with a recess slightly narrower than the diameter of the rebar. Formed to be able. Furthermore, a cylindrical reinforcing bar holding part having an opening smaller than the diameter of the reinforcing bar is integrally formed,
Alternatively, it may be separately formed and fixed to the main body. The shape of the anchor bolt holding part is a cylindrical body, an elliptic cylinder, a superior arcuate cylinder,
Any polygonal tubular body or the like into which the anchor bolt can be inserted and fixed may be used. In the case of fixing a cylindrical body or the like, a screwing hole may be formed in the cylindrical body and a predetermined position of the anchor bolt may be fixed with a screw. In the case of a superior arc-shaped tubular body, one which is elastic and can be sandwiched is used. The horizontal
The form support portion or the orthogonal form support portion has a linear shape,
Bifurcated, trifurcated, saw blade-shaped, uneven, etc.
A sharpened shape is preferably used. With formwork
Prevents slippage, and acid rain forms a base along the body.
In order to prevent the corrosion of the reinforcing bars by entering the concrete
It

The formwork support according to claim 2 of the present invention comprises:
The formwork support according to claim 1 , wherein the reinforcing bar holding part and / or the anchor bolt supporting part is formed in a tubular shape in which a peripheral wall is partially cut out so as to grip and fit the reinforcing bar and the anchor bolt. It has a configuration that is configured. With this configuration, in addition to the operation described in claim 1 , the following operation is provided. (1) Reinforcing bars and anchor bolts can be held more firmly by forming each holding portion into a cylindrical shape with one piece cut out . (2) Since the formwork supporter is firmly held by the reinforcing bar, the interval between the formwork and the reinforcing bar is kept constant, so that the cover thickness can be kept uniform . Here, when the tubular body of the reinforcing bar holding part or the anchor bolt holding part is made of synthetic resin or the like, the inner circumference thereof is formed to be substantially the same as or slightly smaller than the outer diameter of the reinforcing bar or anchor bolt, and the length of the main body The width is preferably substantially the same as or longer than the width. This is because it is possible to increase the frictional resistance between the reinforcing bar holding part or the anchor bolt holding part and the reinforcing bar or the anchor bolt, and prevent slipping of these.

The formwork support according to claim 3 of the present invention comprises:
The formwork support according to claim 1 or 2 , wherein the rod-shaped main body has a cross-sectional shape formed in a diagonal line of a virtual polygon such as a cross. With this configuration, in addition to the effect of claim 1 or 2 , since the main body is formed in a diagonal shape of a virtual polygonal shape such as a cross, concrete cast in a concave portion at the center in the longitudinal direction of the cross shape or the like. Is filled with
Due to the anchoring effect of the filled concrete, it has the effect of preventing the anchor bolt from tilting even if something hits it. Here, the main body preferably has a cross shape (a virtual polygon is a square). Further, when the main body and the virtual polygon are formed in a diagonal line, small holes or irregularities may be formed in each part. As a result, the effect that the anchoring effect can be further strengthened for the cast concrete is obtained.

The invention according to claim 4 of the present invention is
The formwork support according to any one of 1 to 3 , wherein each end of the horizontal formwork support part and the orthogonal formwork support part is formed in a bifurcated protrusion shape. have. With this configuration, in addition to the operation according to any one of claims 1 to 3 , the following operation is provided. (1) Since the projections of the mold frame support portions at both ends are easily caught by the mold frame, it is possible to prevent the mold frame support tool from tilting or being displaced during concrete pouring. (2) Since concrete is filled between the bifurcated protrusions, it is possible to enhance the anchoring effect of concrete, which is compatible with the formwork support and concrete. (3) Since the formwork support parts at both ends are protrusions, they only appear as dots on the surface of the concrete structure even after removing the formwork, so raindrops such as acid rain or seawater drops when constructed along the coast It is possible to prevent invasion into the body.

The invention according to claim 5 of the present invention is
The formwork support according to any one of claims 1 to 4 , wherein the level stick support comprises an insertion hole or a support piece formed in a predetermined part of the main body in parallel with the anchor bolt holding part of the main body. And a level stick for adjusting the level of the concrete for slabs supported by the level stick support portion. Claims due to this configuration
In addition to the function of any one of 1 to 4, it has the function of easily adjusting the height of concrete for slabs. Here, the level stick is a square bar shape or a round bar shape, made of metal or polyethylene. Polyolefin, etc., synthetic resin such as polyester, etc. are used. Also,
The level stick support part is formed in a hole shape matching the shape of the level stick. When it is formed in a hole shape, it is preferably a bottomed one or a tapered hole. This is because the level stick can be easily supported at a predetermined height simply by inserting it into the hole, and the level stick can be prevented from being washed away by the concrete flow when pouring concrete.

The invention according to claim 6 of the present invention is
The formwork support according to any one of 1 to 5, which has a configuration in which a friction material such as a rubber layer is formed on a part or all of the inner surface of the anchor bolt holding portion. With this configuration, in addition to the effect of any one of claims 1 to 5, by increasing the frictional resistance of the anchor bolt holding portion, slippage of the anchor bolt can be prevented, and the anchor bolt can be held more firmly. . Here, the uneven portion may be one that can suppress the slippage of the anchor bolt by pressing the anchor bolt against another wall surface, and the protruding portion may be a ridge or a protrusion. An alkali resistant material such as a rubber layer is used.

The invention according to claim 7 of the present invention is a claim
7. The formwork support according to any one of 1 to 6 , wherein the main body is made of synthetic resin. With this configuration, in addition to the operation described in any one of claims 1 to 6 , the following operation is provided. (1) It is possible to mass-produce at low cost and obtain stable quality. (2) If paraffin or the like is mixed into the synthetic resin to make it water repellent, rainwater can be prevented from entering along the mold support.

The invention according to claim 8 of the present invention is
The formwork support according to item 5 , wherein the level stick is provided with a scale. With this configuration, in addition to the effect of the fifth aspect , the height of the concrete for slabs can be arbitrarily adjusted within the scale. Here, the scale is preferably formed in units of 10 mm. It is easy to check and workability can be improved.

An embodiment of the present invention will be described below with reference to the drawings. Embodiment An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a mold support in one embodiment of the present invention, FIG. 2 (a) is its front view, FIG. 2 (b) is its plan view, and FIG. 3 is its side view. It is a figure. 1 to 3, reference numeral 1 is a mold support tool molded from a synthetic resin such as ABS, polyethylene, polypropylene, nylon or the like, and 2 is a cross shape having a rod shape and a imaginary polygonal cross section formed in a diagonal line of a quadrangle. A main body 3a is a horizontal form supporting portion formed horizontally on one end of the main body 2 in a bifurcated protrusion shape, and 3b is a bifurcated protruding shape orthogonal to the horizontal form supporting portion 3a on the other end of the main body 2. The orthogonal form frame support portion 4 formed on the side of the main body 2 is a cylindrical rebar holding portion formed on the side portion near the center of the main body 2 with one piece cut out, and 5 is on the side portion of the main body 2 orthogonal to the rebar holding portion 4. The formed anchor bolt holding portion 6 is notched, and 6 is a bottomed level stick support portion formed in parallel with the anchor bolt holding portion 5.

The method of constructing the mold support of the above structure will be described below with reference to the drawings. FIG. 4 is a perspective view of a main part showing a construction state, and FIG.
5A is a front view thereof, FIG. 5B is a plan view thereof, and FIG. 6 is a side view thereof. 4 to 6, 7 is a level stick for adjusting the level of concrete for slabs, 8 is a reinforcing bar fitted in the reinforcing bar holding portion, 9 is an anchor bolt fitted in the anchor bolt holding part 5, 10
Is a base plate for supporting the upper part of the anchor bolt 9, and 11 is a form supported by the horizontal form supporting part 3a and the orthogonal form supporting part 3b of the form supporting tool 1. First of all, the foundation work is to carry out a gravel project, and then throw concrete on it. Next, the waste is squeezed onto the concrete, and the base muscles and the rising muscles are arranged along the squeeze. Next, the reinforcing bars 8 are arranged, and the reinforcing bar holding portions 4 of the formwork support 1 are fitted at predetermined intervals of the reinforcing bars 8. Then, along the horizontal formwork support portion 3a and the orthogonal formwork support portion 3b of the formwork support 1, the formwork 1
Attach 1. Various diameters of the reinforcing bar holding part 4 and the anchor bolt holding part 5 are prepared depending on the diameters of the reinforcing bar 8 and the anchor bolt 9. Next, the anchor bolt 9 is fitted to the anchor bolt holding portion 5 of the formwork support 1. At this time, since the rebar-retaining portion 4 and the anchor bolt-retaining portion 5 of the formwork support 1 are arranged orthogonally to each other, the rebar 8 and the anchor bolt 9 are naturally arranged to be orthogonal to each other, and the rebar 8 and the anchor bolt 9 are separated from each other. It will be fixed in a fixed state, and the cover thickness will be evenly secured. In addition, by forming a rubber layer (not shown) on the inner surface of the anchor bolt 9, the anchor bolt 9 is more firmly fixed. According to the marking, the reinforcing bars 8, the anchor bolts 9 and the frame support 1 are arranged, the upper portion of the anchor bolts 9 is fixed by the base plate 10, and then concrete is poured and a slab is cast. At this time, since the horizontal formwork support portion 3a and the orthogonal formwork support portion 3b are formed in a bifurcated manner at right angles, a couple force acts, and the formwork support tool 1 tilts or shifts due to the pressure of the concrete for slabs. , Can be prevented from flowing into the concrete flow. Also,
Since the cross section of the main body 2 is cross-shaped, concrete poured into the recess in the center of the cross in the longitudinal direction is filled, and due to the anchoring effect of the filled concrete, even if an object hits the anchor bolt, it will tilt. Can be prevented. When placing a slab, if the scale of the level stick 7 for adjusting the level of the concrete for the slab is supported by the level stick support portion 6 of the formwork support 1, the level of the concrete for the slab will be based on the level stick 7. Easy to adjust. As described above, according to the present embodiment, the reinforcing bar 8 and the anchor bolt 9 are fitted by the formwork support tool 1, and the horizontal formwork support part 3a and the orthogonal formwork support part 3b of the formwork support tool 1 form the formwork. By supporting the above, the covering thickness of the reinforcing bar 8 and the anchor bolt 9 can be uniformly ensured, and the construction period can be remarkably shortened while saving labor.

[0016]

As described above, according to the frame support of the present invention, the following excellent effects are obtained. The invention according to claim 1 has the following effects. (1) It is possible to provide a formwork support capable of ensuring a uniform cover thickness between the reinforcing bar and the anchor bolt. (2) It is possible to provide a formwork supporting tool that can hold the anchor bolt vertically, save the work of re-mounting and improve workability. (3) Since it is lightweight and strong, it is possible to provide a form supporting tool which is excellent in transportability and does not break or break even if it is roughly handled at a construction site and is excellent in handleability. (4) Providing a formwork support tool that will prevent the main body from slipping due to couple force
It becomes possible to serve.

According to the invention of claim 2 , claim 1
In addition to the effects described in 1., the following effects can be obtained. (1) It is possible to provide a formwork support tool that can more firmly hold a reinforcing bar and an anchor bolt. (2) It is possible to provide a formwork support tool that can more firmly and uniformly maintain the cover thickness.

According to the invention described in claim 3, claim 1
Alternatively , in addition to the effect of 2 , it is possible to provide an advantageous effect that it is possible to provide a form support tool capable of preventing the anchor bolt from tilting even if the anchor bolt is hit by the anchoring effect.

According to the invention of claim 4 , claim 1
In addition to the effect of any one of the items 1 to 3 , the following effects can be obtained. (1) It is possible to provide a formwork support tool capable of preventing the formwork support tool itself from being displaced. (2) It is possible to provide a formwork support that can enhance the anchoring effect. (3) It is possible to provide a formwork support capable of preventing raindrops such as acid rain and seawater drops when constructed along the coast from entering the concrete body.

According to the invention of claim 5 , claim 1
In addition to the effect of any one of 4 to 4, there is an advantageous effect that it is possible to provide a formwork support that can easily adjust the height of concrete for slabs.

According to the invention of claim 6 , claim 1
In addition to the effect of any one of the items 1 to 5, an advantageous effect that a form supporting tool that can more firmly hold the anchor bolt can be provided can be obtained.

According to the invention described in claim 7, claim 1
In addition to the effect of any one of items 6 to 6 , the following effect is obtained. (1) It is possible to mass-produce at low cost and provide a stable formwork support tool. (2) It is possible to provide a formwork support capable of preventing rainwater from entering along the formwork support.

According to the invention of claim 8 , claim 5
In addition to the above effect, there is an advantageous effect that it is possible to provide a form support tool capable of arbitrarily adjusting the height of concrete for slabs within the scale.

[Brief description of drawings]

FIG. 1 is a perspective view of a mold support tool according to an embodiment of the present invention.

FIG. 2A is a front view of a formwork support according to one embodiment. FIG. 2B is a plan view of the formwork support according to one embodiment.

FIG. 3 is a side view of the form support tool according to the embodiment.

FIG. 4 is a perspective view of an essential part showing a construction state of the form support tool according to the embodiment of the present invention.

5A is a front view of a main part perspective view showing a construction state of a form support tool according to one embodiment. FIG. 5B is a main part perspective view showing a construction state of a form support tool according to one embodiment. Plan view

FIG. 6 is a side view of a perspective view of a main part showing a construction state of the form support tool according to the embodiment.

[Explanation of symbols]

1 Formwork support 2 body 3a Horizontal form support 3b Orthogonal formwork support 4 Reinforcing bar holder 5 Anchor bolt holding part 6 level stick support 7 level stick 8 rebar 9 Anchor bolt 10 base plate 11 Formwork

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-28459 (JP, A) JP-A-9-144025 (JP, A) JP-A-60-26768 (JP, A) Jitsukaihei 4- 77641 (JP, U) Actual development Sho 62-120537 (JP, U) Actual development Sho 50-106206 (JP, U) Registered utility model 3040437 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) E02D 27/00

Claims (8)

(57) [Claims] 1. A rod-shaped main body, a reinforcing bar holding part formed in a predetermined part such as a central part of the main body, an anchor bolt holding part formed in a predetermined part orthogonal to the reinforcing bar holding part, and the book.
A horizontal formwork support formed horizontally at one end of the body;
Formed at the other end of the main body orthogonal to the horizontal formwork support
Formwork support for the orthogonal frame support section, comprising the
Ingredient 2. The reinforcing bar holding part and / or the anchor bolt supporting part is formed in a tubular shape in which a peripheral wall is partially cut out so as to grip and fit the reinforcing bar and the anchor bolt. Item 1. The formwork support according to Item 1 . 3. A formwork support according to claim 1 or 2, characterized in that the cross-sectional shape of the rod-like body is formed in a cross shape such virtual polygonal diagonally. Wherein any one of claims 1 to 3, characterized in that each end of the said horizontal frame support section orthogonal frame support section is formed in each bifurcated protrusion The formwork support described in. 5. A level stick support part comprising an insertion hole and a support piece formed in a predetermined part of the main body in parallel with the anchor bolt holding part of the main body, and slab concrete supported by the level stick support part. 2. A level stick for level adjustment according to claim 1 is provided.
The formwork supporter according to any one of claims 1 to 4 . 6. any one of claims 1 to 5, characterized in that the friction material of the concave-convex portion and the rubber layer or the like on a part or the whole of the inner surface of the anchor bolt holding portion is formed, arranged The formwork support described in. 7. A formwork support according to any one of claims 1 to 6, characterized in that said body is made of synthetic resin. 8. The formwork support according to claim 5 , wherein a scale is provided on the level stick.