Post-cast strip independent supporting structure

Abstract

The post-cast strip independent supporting structure comprises a plurality of supporting sets which are arranged in the length direction of a post-cast strip at equal intervals, each supporting set comprises two supporting single bodies, and the two supporting single bodies in each supporting set are symmetrically distributed on the two sides of the width direction of the post-cast strip; each supporting single body comprises three vertical steel pipes arranged in a triangle shape, the three vertical steel pipes are connected and positioned through rotating fasteners and are flush up and down, a square steel base plate is arranged on the upper sides of the three vertical steel pipes, and the upper sides of the three vertical steel pipes are all welded to the lower side of the square steel base plate. The lower portions of the three vertical steel pipes are provided with cylindrical concrete column piers wrapping the lower portions of the three vertical steel pipes at the same time. According to the post-cast strip supporting structure, the post-cast strip can be independently supported, the supporting structure of the post-cast strip part is separated from the whole supporting system, and the support of the post-cast strip part is reserved when a template is removed, so that the influence of template removal on the quality of the post-cast strip part is eliminated.

Description

Technical Field

[0001] The utility model relates to an independent supporting structure for a post-cast strip. Background Art

[0002] Post-cast joints are concrete strips placed in foundation slabs, walls, and beams during construction to prevent harmful cracks caused by uneven shrinkage or settlement of reinforced concrete structures. These strips are designed to meet design or construction specifications and temporarily divide the structure into sections. After a period of time, concrete is poured across these joints to connect the structure. For details, see Chinese Patent CN202210474722.5.

[0003] During the construction of the basement roof, the post-casting strip construction process is to build the post-casting strip together with the support system of the main structure. Due to the particularity of the post-casting strip, the support of this part cannot be removed before the post-casting strip is poured. However, when the formwork support outside the post-casting strip is normally removed, it is inevitable that the formwork support system at the post-casting strip will become loose. Some are even removed together and then re-installed. This will cause the beams and slabs on both sides of the post-casting strip to form temporary cantilever components, thereby causing cracking and damage at the roots of the beams and slabs at the post-casting strip, affecting the quality of the main structure. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide an independent supporting structure for the post-cast strip, which can play the role of independent support for the post-cast strip, separate the supporting structure of the post-cast strip part from the overall supporting system, and retain the support of the post-cast strip part when the formwork is removed, so as to eliminate the influence of the formwork removal on the quality of the post-cast strip part.

[0005] In order to solve the above technical problems, the utility model provides an independent support structure for a post-cast strip, comprising a number of support groups arranged at equal intervals along the length direction of the post-cast strip, each support group including two support units, and the two support units in each support group are symmetrically distributed on both sides of the width direction of the post-cast strip, and each of the support units includes three vertical steel pipes arranged in a herringbone shape, the three vertical steel pipes are connected and positioned by rotating fasteners and are flush up and down, a square steel pad is provided on the upper side of the three vertical steel pipes, the upper sides of the three vertical steel pipes are welded to the lower side of the square steel pad, and the lower parts of the three vertical steel pipes are provided with cylindrical concrete piers that simultaneously cover the lower parts of the three vertical steel pipes.

[0006] For the purpose of simple explanation, the independent support structure for the post-cast strip described in the present invention is referred to as the support structure below.

[0007] The construction method of the support structure includes the following steps:

[0008] (1) After the basement roof template is completed, square holes are opened on the roof template at the support positions corresponding to each supporting unit on both sides of the post-casting strip. The size of the square holes matches the size of the square steel pads.

[0009] (2) Use rotating fasteners to connect every three steel pipes to the integral support members arranged in a finished shape;

[0010] (3) Weld a square steel plate on top of each integral support member;

[0011] (4) Insert the top of the integral support member into each square hole so that the upper side of the square steel plate is flush with the upper side of the top plate template;

[0012] (5) After the verticality of the integral support is measured by instruments to meet the requirements, the formwork is erected and the concrete column pier is poured;

[0013] (6) After the concrete columns are solidified and the formwork is removed, the basement roof can be poured with concrete and the supporting units can be painted with warning paint.

[0014] Advantages of this support structure: This support structure provides a safe and convenient load and structural design, which can play an independent supporting role for the post-casting strip, separate the supporting structure of the post-casting strip from the overall support system, and retain the support of the post-casting strip when the formwork is removed, so as to eliminate the impact of the formwork removal on the quality of the post-casting strip. It uses three steel pipes connected in a triangular shape as the bearing structure, which greatly reduces the difficulty of construction and management, improves construction efficiency, and has strong stability and good supporting and bearing performance. The bottom of the steel pipe is connected to the ground through a concrete column pier, which is safe, reliable and stable. In addition, the construction method is simple and low-cost. Compared with the ordinary support method of the post-casting strip, the construction is faster and more convenient; at the same time, the materials at the post-casting strip can be turned over in time, avoiding economic losses caused by material waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main viewing direction of the support structure (showing one support group).

[0016] Figure 2 It is a schematic diagram of the support structure when viewed from above (illustrated as three adjacent support groups, and the rotating fasteners are not shown). DETAILED DESCRIPTION

[0017] See also Figure 1 、 Figure 2, an independent support structure for a post-cast strip, comprising a number of support groups equidistantly arranged along the length direction of the post-cast strip, each support group comprising two support units, the two support units in each support group being symmetrically distributed on both sides of the width direction of the post-cast strip, each support unit comprising three vertical steel pipes 1 arranged in a herringbone shape (the steel pipes 1 are Φ48*3.6 round steel pipes), the three vertical steel pipes 1 are connected and positioned by rotating fasteners 11 and are flush up and down, a square steel pad 2 is provided on the upper side of the three vertical steel pipes 1 (the steel pad 2 has a size of 200mm*200mm*2mm), the upper sides of the three vertical steel pipes 1 are welded to the lower side of the square steel pad 2, and the lower parts of the three vertical steel pipes 1 are provided with cylindrical concrete piers 3 (the piers 3 have a diameter of 200mm and a height of 200mm) which simultaneously cover the lower parts of the three vertical steel pipes 1.

[0018] The above-mentioned construction method of the post-cast strip independent support structure comprises the following steps:

[0019] (1) After the basement roof template 4 is completed, square holes are opened on the roof template 4 at the supporting positions corresponding to each supporting unit on both sides of the post-casting strip. The size of the square holes matches the size of the square steel pad 2;

[0020] (2) Every three steel pipes 1 are connected to the integral support members arranged in a finished shape using rotating fasteners 11;

[0021] (3) Weld a square steel plate 2 on top of each integral support member;

[0022] (4) Insert the top of the integral support member into each square hole so that the upper side of the square steel plate 2 is flush with the upper side of the top plate template 4;

[0023] (5) After the verticality of the integral support is measured by an instrument to meet the requirements, the formwork is erected and the concrete column pier 3 is poured (the formwork uses a PVC pipe with a diameter of 200 mm and a height of 200 mm);

[0024] (6) After the concrete pier 3 is solidified and the formwork is removed, the basement roof can be poured with concrete and the supporting units can be painted with warning paint.

Claims

1. A post-cast strip independent support structure, characterized by: It includes several support groups arranged at equal intervals along the length direction of the post-cast strip, each support group includes two support units, and the two support units in each support group are symmetrically distributed on both sides of the width direction of the post-cast strip. Each support unit includes three vertical steel pipes arranged in a herringbone shape, and the three vertical steel pipes are connected and positioned by rotating fasteners and are flush up and down. A square steel pad is provided on the upper side of the three vertical steel pipes, and the upper sides of the three vertical steel pipes are welded to the lower side of the square steel pad. The lower parts of the three vertical steel pipes are provided with cylindrical concrete piers that simultaneously cover the lower parts of the three vertical steel pipes.

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