JP2005200888A - Foundation form support tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foundation form support tool having high stability when placing a reinforcement, easy in adjusting a position while still placing the reinforcement, and generating little rust by electrically insulating the reinforcement. <P>SOLUTION: This foundation form support tool 1A supports the reinforcement S by inserting a reinforcement support 24 of superposing an insulating sheet 25 on an upper surface into both leg parts 22 by threadably attaching a position adjusting nut 23 to a pair of bolt-like leg parts 22 erected on a pedestal 21. A cylindrical holder 26 is also inserted into both leg parts 22, and a form panel support 27 having an elongate hole is inserted on the holder, and is fixed by a fixing nut 28. A form panel support piece 273 is arranged in an overhang part 272 of the form panel support 27, and a form panel P is placed here. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a foundation mold support for accurately holding a foundation concrete mold in a predetermined position on a foundation foundation surface.

  Since the foundation of the building is a part that affects the construction accuracy of the entire frame, high foundation accuracy is required for the foundation formwork. Conventionally, as a support tool for holding the reinforcement of the foundation and the formwork panel on the foundation ground surface that has been subjected to the earthwork by splitting stone or abandoned concrete, and positioning them accurately, patent literature Those described in 1-2 and the like are known.

  FIG. 5 is a basic formwork support described in Patent Document 1. The base formwork support 9A includes a lower metal fitting 92 in which a steel pipe is bent into a U-shape and leg pieces 91 are attached and both side portions are raised upward, and an upper metal fitting inserted into the lower metal fitting 92 from above. 93. The central portion of the upper metal fitting 93 is bent into a substantially V shape, and a reinforcing bar (the lower main reinforcement of the basic reinforcement) S is placed on this central portion, and the formwork panel P is placed on both shoulder portions of the upper metal fitting 93. Placed. Male screws are formed on both sides of the upper metal fitting 93, and nuts 94 are screwed. By operating the nut 94, the mounting height of the upper metal fitting 93 can be adjusted.

FIG. 6 is a basic formwork support described in Patent Document 2. In this basic formwork support 9B, a pair of left and right screw shafts 96 are erected on a base body 95, a large-diameter disk-shaped nut 97 is screwed onto the screw shaft 96, and the central portion is U-shaped. A bent lower support 98 and an upper support 99 extending linearly from side to side are inserted into a screw shaft 96 and mounted on a disk-shaped nut 97. The center of the lower support 98 Reinforcing bar S is placed on the part, and the formwork panel P is placed on both shoulders of the upper support 99, and the height of the lower support 98 and the upper support 99 is adjusted by operating the disc-shaped nut 97. Is done.
Japanese Utility Model Publication No. 57-97054 Japanese Utility Model Publication No. 4-108749

  Reinforcing bars that are built into the base formwork are usually placed on the base formwork support by assembling the upper and lower main bars, auxiliary bars, ribs, etc. into a unit shape in advance, but such a reinforcing bar unit is very heavy. . If such a reinforcing bar unit is installed on the base formwork support and the formwork panel is installed, and if you want to fine-tune their position in the width direction of the base, Since the base formwork support itself can only be moved along with the base unit surface together with the reinforcing bar unit and the formwork panel, the weight of the reinforcing bar unit and the formwork panel becomes a burden, and the position adjustment work becomes extremely difficult.

  Further, like the basic formwork support described in Patent Document 2, a lower support is attached above the long-running screw shaft, and a heavy reinforcing bar unit is received at a position lower than the support position. In the structure, a large bending load acts on the screw shaft to impair the stability of the base formwork support, and the base formwork support may fall when the reinforcing bar unit is placed.

  Further, in the above-described conventional basic formwork support, since the reinforcing bars are in direct contact with the upper metal fitting and the lower supporting body, the reinforcing bars are electrically connected to the basic ground surface through the metal portion, and therefore, the electrical Therefore, the concrete covering thickness with respect to the reinforcing bars is not ensured at all. Then, it becomes easy to generate | occur | produce rust in a reinforcing bar, and there exists a possibility that the intensity | strength and durability of a foundation may be reduced.

  The present invention has been made from the viewpoint as described above, has high stability when the reinforcing bar unit is placed, can easily adjust the position while the reinforcing bar unit is placed, and further electrically insulate the reinforcing bar. Thus, it is intended to provide a base formwork support that can make it difficult to generate rust.

  In order to achieve the above-mentioned object, a first configuration of the basic formwork support of the present invention is such that a position adjusting nut is screwed to each of a pair of bolt-like legs standing on a pedestal, and each of the legs A reinforcing bar support having a through-hole through which the portion can be inserted is inserted into the both leg portions and mounted on the position adjusting nut, and an insulating sheet made of synthetic resin or synthetic rubber is provided on the upper surface of the reinforcing bar support. A formwork panel support having a long hole through which each of the legs is inserted, and a cylindrical holder is inserted at a position above the reinforcing bar support in each of the legs. Inserted into both legs and mounted on the holder, a fixing nut is screwed onto the leg from above, and the position adjusting nut and the fixing nut are operated to operate the reinforcing bar support and the formwork. The panel support can be raised and lowered along the legs. The features.

  Further, the second configuration of the basic formwork support of the present invention is such that a position adjusting nut is screwed to each of a pair of bolt-like leg portions erected on the pedestal so that the respective leg portions can be inserted. A reinforcing bar support having a hole is inserted into the both leg portions and is mounted on the position adjusting nut, and a fixing nut is screwed onto the leg portion from above, and is attached to the upper surface of the reinforcing bar support. An insulating sheet made of synthetic resin or synthetic rubber is polymerized, and a mold panel support made of a bar material bent in a substantially gate shape is erected on both ends of the reinforcing bar support, and the position adjusting nut The reinforcing bar support and the formwork panel support can be moved up and down along the legs by the operation of the fixing nut.

  Furthermore, the basic formwork support of the present invention is characterized in that, in the basic formwork support according to the first or second configuration, a formwork panel support piece is provided on the upper surface of the formwork panel support. .

  The basic formwork support of the present invention configured as described above is configured such that a reinforcing bar support is attached on a position adjusting nut screwed to a bolt-shaped leg portion and the reinforcing bar is received on the upper surface thereof. Has been. Therefore, the lowest part of the reinforcing bar and the height of the position adjusting nut are substantially equal, so that a large bending load can be prevented from acting on the leg part, and the stability of the base formwork support can be improved.

  Moreover, since the long hole which can penetrate a leg part is formed in the formwork panel support body according to the configuration of claim 1 and the reinforcing bar support body according to the configuration of claim 2, respectively. Even after the reinforcing bar unit or formwork panel is installed on the fixture, the position adjustment work of the reinforcing bar unit and the formwork panel can be easily performed by moving the formwork panel support or the reinforcing bar support along the long hole. be able to.

  Furthermore, since the insulating sheet made of synthetic resin or synthetic rubber is polymerized on the upper surface of the reinforcing bar support, the basic formwork support of the present invention electrically insulates between the reinforcing bar and the basic ground surface, The rust prevention effect of the reinforcing bar can be enhanced.

  Further, by providing the formwork panel support piece on the upper surface of the formwork panel support, positioning of the formwork panel is facilitated and the support state of the formwork panel is stabilized.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 2 show a first embodiment of the present invention. FIG. 1 is an exploded perspective view of a base formwork support, and FIG. 2 is a side view showing a use state of the base formwork support.

  The basic formwork support 1A includes a pair of leg portions 22 erected on a pedestal 21, and a position adjusting nut 23, a reinforcing bar support body 24, an insulating sheet 25, a holder 26, a formwork panel support body 27, and a fixing body. It is configured by attaching a nut 28. The form of the pedestal 21 is not particularly limited as long as it can be stably placed on the foundation base surface F. However, in the illustrated form, a reinforcing rib faces upward on the long side edge of the rectangular steel plate. The member formed in is used.

  The leg portion 22 is made of a slicing bolt, is arranged with an appropriate interval in the long side direction (the width direction of the foundation) of the pedestal 21, and is fixed to the pedestal 21 via a leg fixing nut or the like. . Each leg portion 22 is screwed with a position adjusting nut 23 for supporting the reinforcing bar support 24 and is held at an appropriate height.

  The reinforcing bar support 24 is composed of, for example, an angle piece having an L-shaped cross section as shown in the figure, and a pair of through holes 241 through which the leg portions 22 can be inserted are formed in the vicinity of both ends thereof. The reinforcing bar support 24 is inserted into the leg portion 22 with the rib facing downward so that the top surface is flat, and is mounted on the position adjusting nut 23. An insulating sheet 25 made of synthetic resin or synthetic rubber is attached to the upper surface of the reinforcing bar support 24.

  A holder 26 made of, for example, a cylindrical steel pipe or the like is inserted into a portion of the both leg portions 22 protruding upward from the reinforcing bar support 24. Both holders 26 have the same length.

  The formwork panel support 27 is made of a steel material having a cross-sectional groove shape having ribs on both edges as shown in the figure, for example, and is formed longer than the reinforcing bar support 24. In the vicinity of the center portion of the formwork panel support 27, a long hole 271 extending in the longitudinal direction (the width direction of the foundation) is formed at a position where the leg portion 22 can be inserted. In the illustrated embodiment, the long hole 271 is divided into two portions according to the position of each leg portion 22, but may be continuous integrally so that both the approximate portions 22 can be inserted.

  The formwork panel support 27 is inserted into the leg portion 22 with the rib facing downward, is mounted on the holder 26, and is further fixed by screwing a fixing nut 28 onto the leg portion 22 from above. Is done. A part of the upper surface of the mold panel support 27 that protrudes outward from the legs 22 (projected part 272) is cut up and raised so as to match the thickness and arrangement interval of the mold panel P. A frame panel support piece 273 is formed.

  The usage method of this foundation mold support 1A is as follows. First, the pedestal 21 is placed on the foundation base surface F in a state in which the position adjusting nut 23 and the reinforcing bar support 24 are attached to both leg portions 22 fixed to the pedestal 21. Then, with respect to the plurality of foundation formwork supports 1A arranged at appropriate intervals in the extending direction of the foundation, the position adjusting nuts 23 are arranged so that all the reinforcing bar supports 24 are at the reference height and are horizontal. Adjust the height.

  Next, the reinforcing bar (the lower main reinforcing bar of the reinforcing bar unit) S is placed on the insulating sheet 25 attached to the reinforcing bar support 24. If necessary after the rebar S is placed, the position adjusting nut 23 is further adjusted to adjust the level of the rebar S.

  If the reinforcing bar S is correctly supported, the holder 26 and the formwork panel support 27 are attached to the leg portion 22 of each basic formwork support 1A and fixed by the fixing nut 28. And the formwork panel P is mounted in the overhang | projection part 272 of the formwork panel support body 27, and it supports by the support work etc. which are not shown in figure with the reinforcing bar S. Thereby, the formwork panel P is also supported at a predetermined height.

  If the reinforcing bar S and the formwork panel P are displaced in the width direction with respect to the foundation at this stage, the fixing nut 28 is loosened and the formwork panel support 27 is moved along the long hole 272. Make the adjustments while sliding in the width direction of the foundation. If the reinforcing bar S and the formwork panel P are correctly installed, the formwork panel support 27 is fixed by fastening the fixing nut 28 again.

  3 to 4 show a second embodiment of the present invention. FIG. 3 is an exploded perspective view of the base formwork support, and FIG. 4 is a side view showing a use state of the base formwork support.

  In the basic formwork support 1B according to this embodiment, a reinforcing bar support 24 is attached to a pair of legs 22 erected on a pedestal 21 via a position adjusting nut 23 and a fixing nut 28. A formwork panel support 27 is attached to the support 24.

The pedestal 21 is not particularly different from the pedestal 21 of the basic formwork support 1A according to the first embodiment, and the leg portion 22 made of a cutting bolt is also erected on the pedestal 21 in the same manner as in the first embodiment. However, the arrangement | positioning space | interval of the leg part 22 is wider than the 1st Example, and the length of the leg part 22 is formed shorter than the 1st Example.
The reinforcing bar support 24 is made of a member similar to the formwork panel support 27 of the first embodiment, that is, made of a steel material having a cross-sectional groove shape having ribs on both edges, and in a longitudinal direction at a position where the leg portion 22 can be inserted. A long hole 242 extending in the width direction of the foundation is formed. And it is inserted in the leg part 22 with the rib facing downward, mounted on the position adjusting nut 23, and further fixed by a fixing nut 28 screwed onto the leg part 22 from above. An insulating sheet 25 made of a synthetic resin or a synthetic rubber is attached to the upper surface of the reinforcing bar support 24 in the vicinity of at least the central portion that contacts the reinforcing bar S.

  The formwork panel support 27 is made of, for example, a rod bent into a substantially gate shape as shown in the figure, and is erected on the upper surfaces of both ends of the reinforcing bar support 24 so as to straddle the leg portions 22. . On the top surface of the formwork panel support 27, a formwork panel support piece 273 protrudes so as to coincide with the thickness arrangement interval of the formwork panel P.

  The method of using the basic formwork support 1B is also substantially the same as the basic formwork support 1A according to the first embodiment. That is, with the position adjusting nut 23 and the reinforcing bar support 24 mounted on both legs 22, the pedestal 21 is placed on the foundation base surface F, and the height and level of the reinforcing bar support 24 are adjusted and fixed. The nut 28 is tightened. Then, the reinforcing bar S is placed on the insulating sheet 25 adhered to the reinforcing bar support 24. Subsequently, the formwork panel P is placed on the formwork panel support 27, and is supported together with the reinforcing bars S by a support work (not shown). When the reinforcing bar S and the formwork panel P are displaced in the width direction with respect to the foundation, the fixing nut 28 is loosened, and the reinforcing bar support 24 is slid along the elongated hole 242 in the width direction of the foundation. While adjusting the street. Thereby, the reinforcing bar S and the formwork panel P are correctly supported.

1 is an exploded perspective view of a basic formwork support according to a first embodiment of the present invention. It is a side view which shows the use condition of the basic formwork support which concerns on the 1st Example of this invention. It is a disassembled perspective view of the basic formwork support according to the second embodiment of the present invention. It is a side view which shows the use condition of the foundation mold support which concerns on 2nd Example of this invention. It is a perspective view which shows the structure of the conventional basic formwork support described in patent document 1. FIG. It is a perspective view which shows the structure of the conventional basic formwork support described in patent document 2. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1A Foundation mold support 1B Foundation mold support 21 Base 22 Leg 23 Position adjustment nut 24 Reinforcing bar support 241 Through hole 242 Long hole 25 Insulation sheet 26 Holder 27 Mold frame panel support 271 Long hole 272 Overhang 273 Formwork panel support piece 28 Fixing nut F Foundation base surface S Rebar P Formwork panel

Claims (3)

Reinforcing bar supports each having a through hole through which each of the leg portions can be inserted are screwed into a pair of bolt-like leg portions standing on the pedestal, and are inserted into the both leg portions. It is placed on the nut for position adjustment, and an insulating sheet made of synthetic resin or synthetic rubber is polymerized on the upper surface of the reinforcing bar support,
A cylindrical holder is inserted at a position above the reinforcing bar support in each leg, and a formwork panel support having a long hole through which each leg can be inserted is inserted into both legs. Is mounted on the holder, and a fixing nut is screwed onto the leg from above,
A base formwork support, wherein the reinforcing bar support and the formwork panel support can be moved up and down along the legs by operating the position adjusting nut and the fixing nut. A pair of bolt-shaped leg portions standing on the pedestal are respectively screwed with position adjusting nuts, and a reinforcing bar support having a long hole through which the leg portions can be inserted is inserted into the both leg portions. The nut is mounted on the position adjusting nut, and the fixing nut is screwed onto the leg from above, and an insulating sheet made of synthetic resin or synthetic rubber is polymerized on the upper surface of the reinforcing bar support, and the reinforcing bar support. Formwork panel support made of bar material bent in a substantially gate shape is erected on both ends of
A base formwork support, wherein the reinforcing bar support and the formwork panel support can be moved up and down along the legs by operating the position adjusting nut and the fixing nut.   The basic formwork support according to claim 1 or 2, wherein a formwork panel support piece is provided on the upper surface of the formwork panel support.

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