Mould supporting method for trapezoid cross section base of shear wall

Abstract

The invention discloses a mould supporting method for a trapezoid cross section base of a shear wall. The method adopts a mode that split bolts are fixed with wall plate ribs, support bolts are fixed with base plate ribs and limit short ribs are arranged on the split bolts and the support bolts to determine support mould points of two waist mould plates of the trapezoid cross section base and ensure that the geometrical size of the trapezoid section is controlled. Lateral pressure bearing capability of the waist mould plates is improved by means of reinforcing square columns to prevent deformation and mould expansion. Double-frame pipes, butterfly fasteners and wedge gaskets are adopted to fix the mould plates, the wall plate ribs and the base plate ribs to ensure that the axis of the trapezoid cross section base is not offset in the concrete pouring process.

Description

technical field [0001] The invention relates to formwork support technology in the technical field of building construction, in particular to a formwork support method for a trapezoidal section foundation of a shear wall. Background technique [0002] In building structures, the application of shear walls is very common. The section of the conventional shear wall foundation is a stepped section. Because the section is horizontal and vertical, it is easy to support and fix the formwork, and the quality of concrete pouring is easy to control. The problem is that under the same load-bearing conditions, the cross-sectional area is large and the material consumption is large. When the ground foundation is poor and the size of the foundation is large, it is easy to produce uneven load and stress concentration. In order to overcome the above-mentioned engineering defects and save engineering cost, the existing technology designs the cross-section of the shear wall foundation a...

AI Technical Summary

Problems solved by technology

The problem is that under the same load-bearing conditions, its cross-sectional area is large and the material consumption is large. When the foundation is poor and the size of the foundation is large, it is easy to produce uneven load and stress concentration.

In order to overcome the above-mentioned engineering defects and save engineering cost, the existing technology designs the cross-section of the shear wall foundation as a trapezoidal cross-section. In order to ensure the construction quality of the concrete foundation construction, the construction technology of pouring the foundation bottom plate and the wall foundation concrete at the same time is usually adopted. To meet this construction technology, the "suspension method" is generally used to support and fix the foundation formwork of the trapezoidal section. The problem is that when the "suspension method" is used for construction, the waist formwork on both sides of the trapezoidal section foundation is difficult to locate and there is no fixed support surface , when pouring concrete, it is easy to cause quality problems such as deformation, mold running, and mold expansion, resulting in the displacement of the axis of the concrete trapezoidal section foundation, and once the above defects occur, subsequent repairs are very difficult, especially for poor foundations, deep foundations or rafts. When the thickness of the slab is thicker, the probability of the above-mentioned quality problems in the construction increases sharply. According to statistics, the trapezoidal section foundation formwork supported by the "suspension formwork method" will cause the trapezoidal section foundation to collapse due to the running and expansion of the formwork. There are countless quality problems

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