A purlin part

Abstract

The invention discloses a purlin surrounding assembly which comprises a lower chord beam component, a web member, first inclined struts and second inclined struts, wherein the lower chord beam component, the web member, the first inclined struts and the second inclined struts are made of H-shaped steel. Flange plates are fixed to the two ends of the lower chord beam component, grooves in the two sides of the lower chord beam component are provided with reinforcing plates, lug plates and drainage holes, and connecting holes are formed in outside flanks. Flange plates are welded to the two ends of the web member, one end of the web member is connected with inside flanks of the lower chord beam component through bolts, and grooves in the two sides of the web member are provided with reinforcing plates and drainage holes. According to the first inclined struts and the second inclined struts, the two end faces of each first inclined strut and the two end faces of each second inclined strut are 45-degree diagonal planes and welded to flange plates, one end of each first inclined strut and one end of each second inclined strut are connected with the web member through bolts, the other end of each first inclined strut and the other end of each second inclined strut are connected with the lower chord beam component through bolts, grooves in the two sides of each inclined strut are provided with lug plates and drainage holes, the length of each second inclined strut is 1 / 3 to 1 / 2 that of each first inclined strut, the number of the first inclined struts and the number of the second inclined struts are respectively two, and the first inclined struts and the second inclined struts are symmetrically arranged at the two sides of the web member. Webs of H-shaped steel of the lower chord beam component, the web member, the first inclined struts and the second inclined struts are located on the same plane. According to the technical scheme, the purlin surrounding assembly is convenient to disassemble and assemble and capable of being reused for multiple times and achieving the purposes of saving the construction cost and enabling construction to be convenient.

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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