Axial force compensation device acting upon steel support and use method thereof

Abstract

The invention discloses an axial force compensation device acting upon a steel support in foundation pit supporting. The axial force compensation device acting upon the steel support in the foundationpit supporting mainly comprises four connecting rods; the four connecting rods are connected to connecting blocks through bolts in pairs; the connecting rods can rotate around the bolts; the connecting blocks comprise an upper connecting block, a lower connecting block and left and right connecting blocks; the upper connecting block is connected with a steel pipe support; the lower connecting block is connected with an enclosing purlin; the left and right connecting blocks are connected with each other through a threaded rod and a nut; and by adjusting the nut, the distance between the left and right connecting blocks can be adjusted to adjust included angles of a quadrangle. The axial force compensation device acting upon the steel support can be used for foundation pit construction, andcan keep a pre-applied axial force in the steel support in the foundation pit construction process; and meanwhile, problems that stress relaxation of the steel support occurs during supporting structure deformation, the steel support is inconvenient to detach after the foundation pit construction is finished and so on are prevented.

Description

technical field [0001] The invention relates to the field of support structure design, in particular to an axial force compensation device acting on a steel support and a use method thereof. [0002] technical background [0003] During the excavation of the foundation pit, especially when the foundation pit is deeply excavated, and when there are high-rise buildings or heavy construction facilities around the foundation pit, the support structure of the foundation pit will be caused during the excavation of the foundation pit. The prestress in the structure causes a large loss, and the supporting structures that have not been specially treated in the past will encounter similar situations. This time, the device is carefully designed to solve the problem that the traditional support structure cannot perform effective stress compensation in time. During the excavation of the foundation pit, the lost stress can be compensated in time by adjusting the high-strength bolts, especi...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the stress loss in the steel support structure cannot be compensated in time during the excavation of the foundation pit and the problem that the steel pipe support is inconvenient to remove

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