JP2779404B2 - Foundation reinforcement - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing bar support for a reinforced concrete or a steel-framed reinforced concrete building, a bridge, a runway or the like which is useful for foundation work.

[0002]

2. Description of the Related Art Conventionally, foundation work has been performed to transmit a vertical load due to its own weight of a building or the like, or a horizontal load applied to the building by wind or earthquake to the ground. The foundation includes an independent foundation, a cloth foundation, a composite foundation, and a solid foundation.
All of the foundation work is performed by gravel and splittering, then throwing concrete, arranging reinforcing bars and forming slabs. The formation of the slab is done by placing bricks and stones on the top of the discarded concrete and arranging reinforcing steel on it,
This is done by placing concrete for slabs. When forming a slab, various measures have been taken because it is difficult to make the cover thickness of a reinforcing bar constant. For example, Japanese Utility Model Laid-Open Publication No. Hei 5-78817 (hereinafter referred to as "A") discloses that, in the construction of a reinforced concrete type slab or a one-piece foundation, a reinforcing concrete support tool 1 to be disposed on a basic waste concrete is used. A groove 1a for fitting the reinforcing bar T is provided at a position of a fixed cover thickness D from the surface,
A cover thickness securing reinforcing bar support tool is also disclosed in which the distance from the upper surface of the reinforcing bar T to the upper surface of the reinforcing bar support tool 1 is also set to a height that is the cover thickness U. Japanese Utility Model Laid-Open No. 6-71654 (hereinafter referred to as “B”) discloses that “a guide groove for guiding a reinforcing bar is provided on a surface of a prism or a cylinder, and the guide groove is formed from a surface opposite to a surface on which each guide groove is provided. "Spacers having different distances to the bottom of the guide groove" are disclosed.

[0003]

However, the rebar support for foundations described in the above-mentioned conventional publications A and B have the following problems. Since there is no means for holding the rising muscles, the worker must fix the rising muscles separately to the base muscles with wires while arranging the base muscles (longitudinal muscles, horizontal muscles), and the workability is poor. Had. In addition, there has been a problem that the height of the rising streaks tends to be uneven, which hinders the work in the subsequent process. In addition, since the riser is fixed to the base muscle by hand by the worker, the riser may be inclined during the work, which requires time and labor to repair, resulting in poor efficiency and poor workability. Was. Since there is no holding means for the formwork, there has been a problem that the work for installing the formwork requires manpower and labor, and the construction period is prolonged.

[0004] The present invention solves the above-mentioned conventional problems, in which not only the cover thickness can be made constant by merely arranging it along the module core of discarded concrete, but also the base streaks (longitudinal streaks, horizontal streaks) can be reduced. For foundations that can arrange reinforcing bars and rising bars in one process, and position the formwork simply by placing width stoppers, significantly improving workability, greatly improving construction efficiency and shortening the construction period. An object is to provide a reinforcing bar support.

[0005]

The present invention has the following arrangement in order to achieve this object. The rebar support for a foundation according to claim 1 is a fitting that is fitted from a base, a lateral streak supporting portion erected on the base, and right and left walls or both left and right side portions and a back portion of the lateral streak supporting portion to fit a rising streak. A rising streak supporting portion having a joint recess, a vertical streak dropping portion formed between the rising streak supporting portions, and a width stopper metal supporting portion extending from an upper portion of the rising streak supporting portion and formed in parallel with the upper surface of the base. And a configuration having: With this configuration, the horizontal (base) streak is supported by the horizontal streak support portion, and the vertical (base) streak is dropped into the vertical streak drop portion between the rising streak support portions. By simply inserting the lower part of the riser, a riser having a uniform height can be arranged at the same time. Since the left and right side portions of the horizontal streak support portion are wide open, the concrete for slab can be filled, and the reinforcing bar support for the foundation can be buried reliably in the concrete for slab without floating. The mold frame can be positioned simply by placing the width stopper on the width stopper support. It has the action of:

In a second aspect of the present invention, there is provided a reinforcing bar support for a foundation according to the first aspect, wherein the base includes a column portion provided on the left and right sides of a horizontal bar supporting portion formed at a central portion, and an upper end of the column portion has a width. It has a configuration in which both sides of the stopper support portion are integrally connected. With this configuration, both ends of the width stopper metal support portion can be physically reinforced, and a large mold can be stably and easily mounted on the width stopper metal. In addition, since the space between the strut and the horizontal bar support is a space, it is possible to fill the concrete for slab, and the reinforcing steel support for the foundation is securely embedded in the concrete for slab and the concrete is integrally formed. This has the effect of not reducing the strength of the slab.

According to a third aspect of the present invention, there is provided a reinforcing bar support for a foundation according to the first or second aspect, wherein the support portion has a horizontal streak placement portion formed at the same height as the horizontal streak support surface on the upper surface of the horizontal streak support portion. It has a configuration having a supporting rib provided. With this configuration, the pillar can be reinforced by the pillar rib, and the thickness of the pillar can be reduced, so that the weight of the reinforcing bar support for foundation can be reduced. In addition, since the support rib has the horizontal streak placement portion, it has an effect that a long horizontal (base) streak can be reliably held.

According to a fourth aspect of the present invention, there is provided a reinforcing bar support for a foundation according to any one of the first to third aspects, wherein the width-stopping metal support portion has a locking portion for locking the width-stopping metal at a side portion thereof. Configuration. With this configuration, the width stopper metal can be prevented from tilting or falling off on the support surface of the width stopper metal support portion.

Here, the base is disposed on the upper surface of the discarded concrete, so that the lower surface is formed in the shape of a flat plate, a semi-column, or two or a plurality of thin rods (number lines or the like) having a horizontal lower surface. You. The horizontal streak support portion is formed in a column shape or a frame shape. This is because the resistance to the flow of the concrete poured when the concrete for slab is poured is reduced and the strength of the slab is not reduced. The height of the horizontal muscle supporting surface of the horizontal muscle supporting portion is determined based on the cover thickness.
The width of the horizontal muscle supporting surface is formed to be large enough not to tilt the horizontal (base) muscle back and forth. When the lateral streak support surface is formed wide, it is desirable to form the lateral streak support portion into a frame shape and to allow the slab concrete to flow through the opening. This is because the reinforcement of the reinforcing steel support for the foundation and the concrete for the slab is improved, and the reinforcing steel support for the foundation does not float or flow when the concrete for the slab is cast. The fitting recess for fitting the rising muscle of the rising muscle support portion may be provided at one place, or may be provided at two places parallel to the facing position. If two locations are provided, one of them can be appropriately selected according to the construction position of the rising streaks, so that the degree of freedom of the arrangement work increases, and the workability can be improved. The locking portion of the width-stop metal support formed on the width-stop metal support may be formed on one or both sides in the longitudinal direction of the width-stop metal support, but is preferably formed on one side. This is because width stoppers having various widths can be placed and supported. Further, the engaging portion may be a protrusion or a wall formed integrally or separately on the side surface of the width stopper supporting portion, or may be a shelf having a step above the supporting portion. Materials for the reinforcing steel support for the foundation include polyethylene, polypropylene, polystyrene, polyamide, polyvinyl chloride, polyvinylidene chloride, AB
Al, alkali-resistant synthetic resins such as S, fluororesin, chlorinated polyether resin and the like, and compositions of these with inorganic fillers (excluding glass fibers not subjected to alkali-resistant prescription); metals such as stainless steel; Mortar or the like is used. A synthetic resin or a composition using the composition as a raw material can be mass-produced by injection molding or the like, which is preferable because cost can be reduced and productivity and workability can be improved. The stainless steel has a reinforcing effect and is particularly preferable for construction of a portion having reinforcement. Ceramics and mortar are preferred because they are easily compatible with concrete for slabs, but are difficult to mold, and are used for the production of simple-shaped reinforcing steel supports for foundations.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a perspective view of a reinforcing bar support for a foundation according to an embodiment of the present invention, FIG. 2 is a front view thereof, FIG. 3 is a cross-sectional view taken along line XX of FIG. 2, and FIG. It is a top view of the reinforcing bar support for foundations of this Embodiment. In FIG. 1, reference numeral 1 denotes a base reinforcing bar support member integrally molded by injection molding of a synthetic resin such as polypropylene, polyethylene, or nylon;
Various widths, lengths, and heights of the base 2 are prepared according to the size of the vertical streaks and the horizontal streaks (vertical base streaks, horizontal base streaks). 3 is a horizontal streak support portion erected in the form of a frame at the center in the longitudinal direction of the base portion 2,
Reference numeral 3a denotes a lateral muscle supporting surface on the upper surface of the lateral muscle supporting part 3, reference numeral 4 denotes a column formed at symmetrical positions on the left and right sides of the lateral muscle supporting part 3, reference numerals 5, 5 'denote column ribs for reinforcing the column 4, and upper ends of the column ribs 5. Is provided with a horizontal streak placement portion 3a 'which is formed at the same height as the horizontal streak support surface 3a and supports the horizontal (base) streaks. Reference numeral 6 denotes a rising muscle support column continuously provided from the left and right side surfaces of the horizontal muscle support portion 3.
Is a width stopper metal support portion connected continuously from the upper end of the upright supporting column portion 6, the upper surface is formed parallel to the upper surface of the base portion 2, and is integrally connected to the upper ends of the column portions 4, 4. On the back side of the metal support 7, the width of the width-stop metal is substantially the same as or slightly higher than the thickness of the width-stop metal. Fall,
Locking portions 9 of the width stopper metal for preventing the tilting are formed integrally with the upright support columns 6 and 6, and the back surfaces of the upright support columns 6 and 6 are reinforced, and the width is opposed to each other. The upright support 10 formed in connection with the stopper support 7 and the width stopper holder 8 is a width stopper that reinforces the rib stopper 7 formed in a rib shape on the front surface of the column 4. The metal support reinforcing portions 11 and 12 are openings into which concrete is cast. In addition, although the rising muscle support part 9 was formed in the rising muscle support pillar part 6, 6, the rising muscle support part 9 is integrally connected from the left and right side walls of the horizontal muscle support part, and the horizontal muscle is arranged on the horizontal muscle support surface 3a. May be cut out. 2 and 3, reference numeral 3a 'denotes an upper end surface of the front support rib 5, and a horizontal streak placement portion 3 formed at the same height as the horizontal streak support surface 3a.
b is a rib-shaped reinforcing member formed in the shape of a rib around the opening 12 of the rod supporting part 3, and 13 is a height substantially equal to the diameter of the lateral (base) bar on the back side of the rod supporting surface 3a of the rod supporting part 3. The vertical (base) streak support portion 14 formed at the bottom is a vertical (base) streak removing portion formed substantially equal to or slightly larger than the diameter of the vertical (base) streak. In FIG. 4, reference numeral 15 denotes a rising muscle supporting portion 9.
A rising stud fitting recess formed in a concave shape in parallel with and opposed to the longitudinal direction to fit a rising streak.

The method of constructing the reinforcing bar support for foundation constructed as described above will be described below with reference to the drawings. FIG. 5 is a perspective view of a main part showing a construction state,
FIG. 6A is a side sectional view of a main part taken along line YY in FIG.
FIG. 6B is a front view of a main part of the vertical (base) muscle support portion of FIG. 6A. Reference numeral 20 denotes a horizontal (base) streak, and the horizontal (base) streaks 20 are fitted and mounted on the horizontal streak support surface 3a of the horizontal streak support portion 3 of the foundation reinforcing bar support 1 at one to several pitches. Reference numeral 21 denotes a vertical (base) streak fitted to the vertical (base) streak removing portion 14 and mounted on the vertical (base) streak support portion 13, and 21 ′: spot welding or the like to each end of the horizontal (base) streak 20. , A vertical (base) streak fixed in parallel with the vertical (base) streak 21, a riser 22, and a riser 22 are fitted into the riser fitting recess 15 of the reinforcing bar support 1 for each pitch. At the same time, its lower side is pressed by vertical (base) streaks 21 to be raised and supported. Reference numeral 23 denotes a vertical streak fixed at a predetermined height of the riser 22 parallel to the vertical (base) streak 21 by spot welding or wire to the riser 22, and 24 is an upper longitudinal streak fixed to the upper end surface of the riser 22. , 25 are the rising streaks 22 and the vertical streaks 24, 2
5 is a brace that is fixed by spot welding or the like and reinforced.

[0012] First, a gravel land operation is performed, and discarded concrete is poured on top of it. Ink on the discarded concrete,
The reinforcing bar supports for foundation 1 are arranged at predetermined intervals (one to several pitches) along the ink mark. Next, the horizontal (base) muscles 20 are arranged on the horizontal muscle supporting surface 3a and the horizontal muscle mounting portion 3a '. Next, the vertical (base) streaks 21 are fitted to the vertical (base) streaks dropping portions 14. Next, the lower part of the riser 22 having a predetermined length is inserted into the riser fitting recess 15 of the riser support 9. Since the upright streak support portion 9 is formed with a wide surface only by fitting the vertical (base) streak 21, the foundation reinforcing bar support 1 can be arranged orthogonal to the vertical (base) streak 21. . Next, the vertical (base) streaks 21 ′ are fixed to both ends of the horizontal (base) streaks 20 at predetermined portions in the length direction by spot welding or the like. Next, the horizontal (base) streaks 20 'are fixed at predetermined intervals to the vertical (base) streaks 21 and the vertical (base) streaks 21' in parallel with the horizontal (base) streaks 20. Next, the rising streaks 22 ′ are connected to the vertical (base) streaks 21 and the horizontal (base) streaks 2.
0 ', and furthermore, the vertical streaks 23 and the upper vertical streaks 24 are arranged and fixed to the rising streaks 22, 22'. Next, the brace 25
Arrange and fix. Next, after fixing the width stopper metal (not shown) to the width stopper metal support part 7 and attaching a formwork, concrete is poured and a slab is cast. The concrete for slab flows through the openings 11 and 12 and fixes the reinforcing bar support 1 for foundation in the slab. As described above, according to the present embodiment, the foundation reinforcing bar support is arranged along the module core, the vertical (base) bar is dropped into the vertical (base) bar, and then the horizontal (base) bar is turned into the vertical (base) bar. The riser and the (base) muscle can be connected with a single touch by simply fitting the riser into the vertical (base) muscle and the riser fitting recessed portion while being fitted between the (base) muscle and the lateral muscle support surface. In addition, the cover thickness can be secured uniformly only by the arrangement of the base bars, so that the workability of the foundation work can be significantly improved, and the construction period can be significantly shortened while saving labor.

[0013]

As described above, according to the present invention, a reinforcing bar support for foundation having the following excellent effects can be realized. (1) Since it is lightweight and strong, it has excellent transportability, and does not chip or break even when roughly handled at a construction site, and has excellent handleability. (2) Just by fitting the vertical base streaks to the vertical base streaks, the bars can be arranged perpendicular to the horizontal base streaks. In addition, the riser can be arranged simply by fitting the riser into the fitting recess of the riser support portion, and the height of the riser can be kept constant, so that the labor for rebar arrangement work is greatly reduced and workability is improved. The remarkable improvement can significantly shorten the construction period of the foundation work. (3) Since there are many openings, it can be integrated with concrete to increase the strength. (4) By simply arranging the reinforcing bars, a predetermined cover thickness can be confirmed and workability can be significantly improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a reinforcing bar support for a foundation according to an embodiment of the present invention.

FIG. 2 is a front view of a reinforcing bar support for a foundation according to an embodiment of the present invention.

FIG. 3 is a sectional view taken along line XX of FIG. 2;

FIG. 4 is a plan view of a reinforcing bar support for a foundation according to an embodiment of the present invention.

FIG. 5 is a perspective view of a main part showing a construction state of a reinforcing bar support for a foundation according to an embodiment of the present invention.

6A is a side sectional view of a main part taken along line YY of FIG. 5; FIG. 6B is a front view of a main part of a vertical (base) streak support part of FIG. 6A;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 Reinforcing bar support for base 2 Base 3 Lateral bar supporting portion 3a Lateral bar supporting surface 3a 'Lateral bar mounting portion 3b Lateral bar supporting reinforcing portion 4 Post 5,5' Post rib 6 Upright bar support 7 Width stopper metal support 8 Width stopper Locking portion of metal 9 Upright bar support 10 Width stopper metal support reinforcement 11 Opening 12 Opening 13 Vertical (base) bar support 14 Vertical (base) bar stripper 15 Rise recess fitting recess 20, 20 ′ Side (Base) muscle 21, 21 'Vertical (base) muscle 22, 22' Rising muscle 23 Vertical muscle 24 Upper longitudinal muscle 25 Brace muscle

Claims (4)

(57) [Claims] An upright stitch having a base, a horizontal streak supporting portion erected on the base, and a fitting recess continuously provided from right and left walls or both right and left sides and a back portion of the horizontal streak supporting portion to fit a rising streak. A support portion, a vertical streak dropping portion formed between the rising stride supporting portion, and a width stopper supporting portion extending from an upper portion of the rising stride supporting portion and formed in parallel with the upper surface of the base portion. A reinforcing bar support for a foundation, comprising: 2. The apparatus according to claim 1, wherein the base portion includes a support portion that is provided on the left and right sides of the horizontal streak support portion formed at a central portion, and upper ends of the support portions are integrally connected to both sides of the width stopper support portion. The reinforcing steel support for foundations according to claim 1, wherein the support is provided. 3. The strut portion according to claim 1, wherein the strut portion has a strut rib provided with a horizontal streak mounting portion formed at the same height as the horizontal streak support surface on the upper surface of the horizontal streak support portion. 4. A reinforcing bar support for a foundation according to item 1. 4. The foundation according to claim 1, wherein the width-fixing metal support portion has a locking portion for locking the width-locking metal on a side portion thereof. Rebar support.