Prestress loading device connecting part

Abstract

The invention discloses a prestress loading device connecting part which comprises a loading base, a nut, a screw rod and a screw rod base. A groove for placing a jack is formed in the loading base. A screw rod inserting hole is formed in one side of the groove. A connecting flange A is arranged on the opposite side of the screw rod inserting hole of the loading base. One end of the screw rod is inserted into the screw rod inserting hole. The other end of the screw rod is fixedly connected with the screw rod base which is provided with a connecting flange B on the side opposite to the side connected with the screw rod. The connecting flange B and the nut which abuts against the loading base can be in thread connection with the portion, except the screw rod inserting hole, of the screw rod. According to the technical scheme, prestress is exerted on a whole supporting-protecting structure, the overall intensity of a supporting-protecting system is improved, assembling and disassembling are convenient, multi-time repeated using can be achieved, and the purpose that construction cost is saved, and construction is convenient is achieved.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a connection part of a prestressed loading device of an internal support system for foundation pit support. 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 th...

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

[0003] At present, after the foundation pit support is completed, there is no prestress application process, or adding supports, which cannot further improve the overall stiffness of the support system after the support system is assembled.

Images