Tie bar for supporting system in high-rigidity integral prestressed fabricated foundation pit support

Abstract

The invention discloses a tie bar for a supporting system in a high-rigidity integral prestressed fabricated foundation pit support. The tie bar comprises a long-bar-shaped H-beam, rectangular flange plates are welded and fixed at two ends of the H-beam, four connecting holes are formed in each flange plate and divided into an upper row and a lower row, the two connecting holes in each row are in up-down one-to-one correspondence, two to four lifting lug plates are arranged in side grooves of the H-beam, three edges of each rectangular lifting lug plate are welded and fixed with a web and flanges of the H-beam respectively, and each lifting lug plate is provided with a lifting hole. Each side groove of the H-beam is partitioned into multiple sections by the lifting lug plates, and at least one drain hole is formed in the web of the H-beam in each section. According to the technical scheme, holes in standard assembling sizes are designed to be connected with other angle braces, diagonal braces or columns, the drain holes are provided so as to achieve the purpose of water draining in rainy days or construction environments with water, corrosion to parts is reduced, and the lifting lug plates are arranged for the convenience of lifting and can be used repeatedly.

Description

technical field [0001] The invention relates to a high-rigidity overall prestressed assembly type foundation pit support internal support system, in particular to a tie rod used for a high-rigidity integral prestressed assembly type foundation pit support internal support system. 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...

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

Images