Purlin parts

Abstract

The invention discloses an enclosing purlin component which comprises a bottom chord beam , a web member and diagonal bracings. The bottom chord beam, the web member and the diagonal bracings are all made of H-shaped steel. Square flange plates are fixed at the two ends of the bottom chord beam. Reinforcing plates, lug plates and drain holes are arranged in grooves in the two sides of the bottom chord beam. An outer side wing plate is provided with a plurality of connecting holes. Square flange plates are welded at the two ends of the web member. One end of the web member is connected with the inner side wing plate of the bottom chord beam through bolts. Reinforcing plates and drain holes are arranged in grooves in the two sides of the web member. The two end faces of each diagonal bracing are 45-degree inclined sections and are provided with rectangular flange plates. One end of each diagonal bracing is connected with the web member through bolts, and the other end of each diagonal bracing is connected with the bottom chord beam through bolts. Lug plates and drain holes are arranged in grooves in the two sides of each diagonal bracings. Two diagonal bracings are symmetrically arranged on the two sides of the web member. A web plate of H-shaped steel of the bottom chord beam, a web plate of H-shaped steel of the web member and web plates of H-shaped steel of the diagonal bracings are located in the same plane. The enclosing purlin component is convenient to detach and install, can be used repeatedly for multiple times, and achieves the purposes of saving construction cost and bringing convenience to construction.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a purlin part. 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 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. F...

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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