Angle brace bracket for high-rigidity monolithic pre-stressing assembly type internal support system for retaining and protection of foundation pit

Abstract

The invention discloses an angle brace bracket for a high-rigidity monolithic pre-stressing assembly type internal support system for retaining and protection of a foundation pit. The bracket comprises an isosceles right-triangle reinforcing plate, a first side plate, a second side plate and a base plate, wherein the first side plate, the second side plate and the base plate form a barrel-shaped structure with an isosceles right-triangle cross section through welding; the isosceles right-triangle reinforcing plate is arranged in the barrel-shaped structure and has three sides respectively fixed with the first side plate, the second side plate and the base plate through welding; eight connecting holes A are formed in the base plate in an upper and a lower row, the four connecting holes A in each row are in isometric distribution, and the holes in the upper row are in one-to-one correspondence with those in the lower row. Due to the adoption of the technical scheme, the bracket can be used in combination with other support parts, is firm and stable in supporting, and can be used repeatedly.

Description

technical field [0001] The invention relates to a high-rigidity overall prestressed assembly type foundation pit support inner support system, in particular to a high-rigidity overall prestressed assembly type foundation pit support inner support system for an angle bracket. Background technique [0002] In soft soil deep foundation pit engineering, reinforced concrete or steel pipe supports the support structure. In order to reduce the deformation of the foundation pit and increase the stability, the commonly used methods are: increase the size of the reinforced concrete purlin street surface, increase the number of steel pipe supports, Reduce spacing etc. But this will greatly increase the consumption of building materials and also reduce the effective construction space in the foundation pit. Since the steel support structure currently used mainly uses a single section steel or steel pipe as a support beam, there is no effective connection between each section steel or s...

AI Technical Summary

Problems solved by technology

Since the steel support structure currently used mainly uses a single section steel or steel pipe as a support beam, there is no effective connection between each section steel or steel pipe, and it cannot work as a composite structure, so their support stiffness is relatively low. The force it can withstand is relatively limited. For foundation pits with large spans, it is difficult to control their deformation with the current steel support support

Because many of these supports are made according to the requirements of on-site construction, there is no standardized connection size, and the purpose of interchangeability and universal use between various parts cannot be achieved. After the foundation pit construction is completed, most of the support parts have become disposable consumables. , cannot be reused

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