JP2008248526A - Form supporting implement for construction of foundation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a form supporting implement for construction of a foundation, which is used for support of not only a metallic form and a resin form such as a plywood form and a steel form, but also a lath form, is easily and surely hold a side bar of a base reinforcement, and makes more efficient laying work for the framework of the base reinforcement. <P>SOLUTION: The form supporting implement comprises: a fixed plate 12 for driven and fixed into an earthen floor; a reinforcement holding portion 14 which holds an almost T-shaped form supporting portion 13 which is erected on the fixed plate 12 so as to support the form, and a reinforcement 21; and an extended portion 15 which is connected to both the form supporting portion 13 and the reinforcement holding portion 14. The reinforcement holding portion 14 has a bifurcated structure which holds the reinforcement 21 in a branch portion 14c of two leg portions 14a and 14b abutting on the ground. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a formwork support used to construct a foundation with reinforcing bars, and in particular, can be used for both conventional rigid formwork and lath formwork, and the side reinforcement of a base rebar. The present invention relates to a formwork support for foundation construction that can be easily and reliably held and can improve the efficiency of the work of laying a frame of a base rebar.

  As shown in FIGS. 5 and 6, for example, as shown in FIGS. 5 and 6, the mold support used for laying the base rebar frame in the construction work of the foundation with the conventional rebar is perpendicular to the bottom 2 having the bottom plate 1. The frame plate attaching portion 3 is formed, and the oblique side portion 4 is formed of a substantially triangular plate in which the side muscle receiving groove 5 is formed inward (Patent Document). 1).

  In the case of a conventional formwork support, the side bars 6 of the base rebar are inserted into the side reinforcement receiving grooves 5 formed in the oblique side part 4, and the mold is attached to the frame plate abutting part 3 constituting the vertical side of the formwork support. By fixing the frame 1 and putting a fixed soil behind the mold F, the mold F is fixed.

However, the conventional formwork support tool is supposed to support metal and resin formwork such as plywood and steel plate, and in recent years, it is lightweight and easy to handle, and can be buried. In the case of a lath formwork using a wire mesh that is often used instead of a formwork made of plywood or steel plate, even if an attempt is made to fix the formwork by putting a fixed soil behind the formwork, the lath formwork Since the net is net-like, the fixed soil enters the casting side beyond this formwork, so that fixing is difficult.
Japanese Patent Laid-Open No. 11-71772

  The present invention has been made in view of such circumstances, and can be used for supporting a lath mold frame as well as a metal or resin mold frame such as a plywood or a steel plate, and a side bar of a base reinforcing bar. It is an object of the present invention to provide a formwork support for foundation construction that can easily and reliably hold the frame and can improve the efficiency of the work of laying the frame of the base rebar.

In order to achieve the above object, the invention described in claim 1 is a formwork support used for construction of a foundation provided with reinforcing bars,
A fixed plate that is driven into the ground and fixed;
A substantially T-shaped formwork support that is erected on the fixed plate and supports the formwork;
A reinforcing bar holding part for holding the reinforcing bar,
An extension part connected to the formwork support part and the reinforcing bar holding part;
And the reinforcing bar holding part has a bifurcated structure for holding a reinforcing bar at a branching portion of two legs that abut on the ground. did.

  In the invention according to claim 2, the two legs of the reinforcing bar holding part have spring elasticity, the leg part is expanded against the spring force, and the reinforcing bar is inserted into the branch part. The gist of the formwork support for foundation construction according to claim 1, wherein the reinforcing bars are held by the spring force of the legs.

  The invention described in claim 3 is characterized in that one or a plurality of locking projections for preventing the reinforcing bars from falling off are provided at the branching portions of the two legs of the reinforcing bar holding part. The gist of the building support for construction was taken as its gist.

  Invention of Claim 4 is provided in the height position where the branch part of the two leg parts of a reinforcing bar holding | maintenance part ensures covering thickness, It is any one of Claims 1-3 characterized by the above-mentioned. The gist of the formwork support for foundation construction was used.

  The invention described in claim 5 is characterized in that the extension part has a length that secures the covering thickness, and the frame support for foundation construction according to any one of claims 1 to 4 is characterized. .

  The invention according to claim 6 is characterized in that the fixing plate that is driven into and fixed to the ground is provided with a hole or a U-shaped groove. The gist of the support was used.

  The invention according to claim 7 is characterized in that the formwork support part has a joint part for connecting another formwork support part corresponding to the height of the formwork. The form support tool for foundation construction described in the above was used as the gist.

  The formwork support 11 used for the construction of the foundation provided with the reinforcing bars of the present invention is on the fixed plate 12 on which the formwork support part 13 for supporting the formwork F is driven and fixed to a discarding container 102 provided on the ground. In addition to the conventional method of fixing the formwork F such as a plywood or a steel plate, the fixed soil S is inserted behind the formwork F to fix the formwork F. In addition, when supporting a formwork F such as a lath formwork, the formwork F can be fixed by attaching the formwork F to the formwork support part 13 with a line or the like.

  Further, according to this formwork support 11, the reinforcing bar holding portion 14 has a bifurcated structure that holds the reinforcing bar 20 at the branching portion 14c of the two leg portions 14a and 14b that come into contact with the ground. The side bars 21 of the base reinforcing bars 20 can be easily and reliably held, and the efficiency of the frame laying work of the base reinforcing bars 20 can be improved.

  Hereinafter, a formwork support for foundation construction of the present invention (hereinafter simply referred to as a support) will be described in detail according to an embodiment shown in the drawings. The support tool 11 shown in FIGS. 1 to 4 is used for the construction of the foundation 100 on which the reinforcing bars 20 are arranged. From the fixing plate 12, the formwork supporting part 13, the reinforcing bar holding part 14, and the extending part 15. Become. The support 11 is made of a synthetic resin such as polypropylene, or a metal such as iron or stainless steel. The support 11 may be made of any material such as iron or stainless steel. In the illustrated example, the support 11 is made of a synthetic resin such as ABS. The fixing plate 12, the formwork support part 13, the reinforcing bar holding part 14, and the extending part 15 constituting the tool 11 were integrally molded (injection molding).

  The fixed plate 12 is a plate having a U-shaped cross section, and its bottom surface is disposed on the throwing cup 102. Then, the support 11 is fixed by discarding screws and anchor pins (not shown) through holes or U-shaped grooves 12a provided at both ends of the fixing plate 12 and driving them into the con 102. Yes. In addition, as shown in FIG. 6, the category of the ground in which the fixing plate 12 is installed and fixed includes the excavation groove 101 in addition to the discarding con 102 formed by placing concrete on the ground with the excavation groove 101 flat. The ground just flattened is also included.

  On the fixed plate 12, a formwork support portion 13 is erected. The formwork support part 13 supports the formwork F, and the shape thereof is substantially T-shaped. The formwork F is supported by the substantially T-shaped formwork support section 13. As a mold supported by the mold support 13, a lath mold using a wire mesh can be used in addition to a conventional mold such as a plywood or a steel plate. In the case of using a formwork F such as a plywood or a steel plate, the formwork F is attached to and supported by the formwork support part 13 and a fixed soil S is inserted behind the formwork F to fix the formwork F. The fixing method can be used. On the other hand, when using a formwork F such as a lath formwork, the formwork F can be fixed by attaching the formwork F to the formwork support part 13 with a line or the like. In addition, when attaching a lath formwork to a formwork support part, a method can be adopted in which a hole is made in the side edge part of the formwork support part in addition to the number line, and the formwork is attached with a rivet or the like through this hole.

  Moreover, the form-frame holding part 13 can also take the form which has the joint part 13a for connecting another form-frame support part corresponding to the height of the form-frame F like illustration. In the case of this form, since it can respond to the molds having various heights, it is not necessary to prepare support tools corresponding to the heights (kinds) of the molds.

  The reinforcing bar holding part 14 is a part that holds the reinforcing bar, that is, the side reinforcing bar 21 of the base reinforcing bar 20 in the formwork support 11. The reinforcing bar holding portion 14 has a bifurcated structure having two leg portions 14a and 14b that come into contact with the ground. And the side muscle 21 is hold | maintained by the branch part 14c of these two legs.

  As described above, in the illustrated example, the support 11 is manufactured by integrally molding with a synthetic resin, and the leg portions 14a and 14b of the reinforcing bar holding portion 14 have spring elasticity. For this reason, the leg portions 14a and 14b are expanded against the spring force and the reinforcing bar 21 is inserted into the branching portion 14c, so that the reinforcing bar 21 is moved between them by the spring force of the two leg portions 14a and 14b. Is supposed to be retained.

  Further, a locking projection 14d is provided on the branch portion 14c of the two leg portions 14a and 14b of the reinforcing bar holding portion 14, and the reinforcing bar 21 held on the branch portion 14c between the two leg portions 14a and 14b. Is designed to prevent falling out. FIG. 3 shows a form in which a locking projection 14d that protrudes in the insertion direction of the reinforcing bar 21 is provided at the base part of each leg part 14a, 14b, and FIG. 4 shows each leg part 14a constituting the branch part 14c, The form which provided many locking protrusions 14d in the shape of a saw at the base part of 14b is shown.

  Further, the branch portion 14c of the two leg portions 14a and 14b of the reinforcing bar holding portion 14 is provided at a height position that secures the covering thickness of the concrete (60 mm or more), so the reinforcing bar 21 is held by the branch portion 14c. It has the merit that the covering thickness can be ensured only by making it.

  The extending portion 15 constitutes a portion connected to the formwork support portion 13 and the reinforcing bar holding portion 14. In the illustrated example, the extending portion 15 is connected to the formwork support portion 13 and the reinforcing bar holding portion 14 by an upper portion 15a and a lower portion 15b. Further, the extending portion 15 is provided with a length that secures the covering thickness of the reinforcing bar 21 held by the reinforcing bar holding portion 14, that is, 60 mm or more.

  Next, the construction work of the foundation using the above support tool will be described. As shown in FIG. 1 to FIG. 4 and FIG. 6, first, the excavation groove 101 is provided by excavating a planned location for constructing the foundation 100. Next, the bottom surface of the excavation groove 101 for constructing the foundation 100 is flattened, and concrete is cast to dispose of the dumping container 102. Next, as shown in FIG. 2, the support 11 is fixed on the throwing container 102 at a predetermined interval. The support 11 is fixed by throwing a screw or an anchor pin (not shown) through the hole or U-shaped groove 12a provided at both ends of the fixing plate 12 and driving it into the condenser 102. Next, the two leg portions 14a and 14b constituting the reinforcing bar holding portion 14 of the support 11 are expanded against the spring force, and the reinforcing bar 21 is inserted into the branch portion 14c between the leg portions 14a and 14b. As a result, the reinforcing bar 21 is held by the branch portion 14c of the root portion by the spring force of the two leg portions 14a and 14b. After this, the horizontal bars 22 are assembled on the side bars 21 with the number lines, and the vertical bars 23 are also assembled on the center of the horizontal lines 22 with the same number lines to lay the frame of the base rebar 20. Further, the rising bars 24 are assembled at the intersections between the horizontal bars 22 and the vertical bars 23 of the base reinforcing bars 20, and the frame construction of the reinforcing bars in the foundation 100 is completed.

  On the other hand, the formwork F is supported on the formwork support 13 of the support 11 fixed on the throwing container 102. In the example shown in the figure, a case where a lath mold is used is shown, and the mold F is fixed to the mold support 13 by a wire or the like to complete the fixing of the mold F.

  After laying the rebar frame and fixing the formwork to the support as described above, the foundation is constructed by placing concrete.

  The present invention is not limited to the example shown in the drawings. For example, after the reinforcing bar 21 is held by the reinforcing bar holding part 14, the two leg parts 14a below the branching portion 14c of the reinforcing bar holding part 14 are provided. , 14b can be freely changed within the scope described in the claims, such as making the holding of the reinforcing bars 21 more reliable by restraining the leg portions 14a, 14b by winding the wire 14b. .

The expansion perspective view which shows the support tool of this invention. The top view which shows the state which performed the frame construction of the reinforcing bar using the support tool of this invention, and the mold frame was fixed to the support tool. The expanded sectional view which shows one form which hold | maintains a reinforcing bar in the branch part provided in the base part of the two leg parts of the reinforcing bar holding part in the support tool of this invention. The expanded sectional view which shows another form which hold | maintains a reinforcing bar in the branch part provided in the base part of the two leg parts of the reinforcing bar holding part in the support tool of this invention. The perspective view which shows the state which performed the frame construction of the reinforcing bar using the conventional formwork support tool, and the formwork was fixed to the support tool. Similarly enlarged sectional view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Support tool 12 ... Fixing plate 12a ... Hole or U-shaped groove 13 ... Formwork support part 13a ... Joint part 14 ... Rebar holding part 14a, 14b ... Leg part 14c ... Branching part 14d ... Locking protrusion 15 ... Extension part 15a ... Upper part 15b ... Lower part 20 ... Base reinforcement 21 ... Side reinforcement 22 ... Horizontal reinforcement 23 ... Vertical bars 24 ... Rising bars 100 ... Bases 101 ... Drilling grooves 102 ... Discarding containers X ... Number lines F ... Formwork

Claims (7)

A formwork support used to construct a foundation with reinforcing bars,
A fixed plate that is driven into the ground and fixed;
A substantially T-shaped formwork support that is erected on the fixed plate and supports the formwork;
A reinforcing bar holding part for holding the reinforcing bar,
An extension part connected to the formwork support part and the reinforcing bar holding part;
The formwork support for foundation construction, characterized in that the reinforcing bar holding part has a bifurcated structure that holds a reinforcing bar at a branching portion of two legs abutting against the ground. The two legs of the reinforcing bar holding portion have spring elasticity, and the leg is expanded against the spring force and the reinforcing bar is inserted into the branch portion, so that the reinforcing bar becomes a spring of the leg. The formwork support for foundation construction according to claim 1, wherein the support is held by force. The formwork support for foundation construction according to claim 1 or 2, wherein one or a plurality of locking projections for preventing the reinforcing bars from falling off are provided at a branch portion of the two leg portions of the reinforcing bar holding part. The formwork support for foundation construction according to any one of claims 1 to 3, wherein a branching portion of the two leg portions of the reinforcing bar holding portion is provided at a height position for securing a covering thickness. . The formwork support for foundation construction according to any one of claims 1 to 4, wherein the extending portion has a length that secures the covering thickness. The formwork support for foundation construction according to any one of claims 1 to 5, wherein the fixing plate that is driven into and fixed to the ground includes a hole or a U-shaped groove. The mold for supporting foundation construction according to any one of claims 1 to 6, wherein the mold support has a joint for connecting another mold support corresponding to the height of the mold. Frame support.

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