A device and installation method for eliminating the influence of lattice columns on the axial force of supporting beams

Abstract

The invention discloses a device for eliminating the influence of lattice columns on the axial force of a support beam. The device includes a piston assembly, two steel backing plates and a plurality of foot steel plates. The piston assembly includes an outer cylinder of a hydraulic cylinder and a hydraulic piston. The hydraulic piston The lower end is telescopically arranged in the outer cylinder of the hydraulic cylinder, and the outer cylinder of the hydraulic cylinder is provided with an oil filling port and a relief valve. , the lower ends of the two arms are connected to a pressure-bearing plate, the pressure-bearing plate is fixedly connected to the upper end of the hydraulic piston, the foot steel plates are connected to the ends of the lattice columns, and the upper ends of all the foot steel plates are fixedly connected to the hydraulic At the bottom of the cylinder outer cylinder, the hydraulic cylinder outer cylinder is filled with hydraulic oil; the invention also discloses an installation method of the above device. The invention can effectively eliminate the influence of the lattice column on the axial force of the support beam, ensure that the monitoring data of the foundation pit is normal and accurate, and provide more accurate data for the monitoring of the foundation pit.

Description

technical field [0001] The invention relates to the technical field of deep foundation pit engineering monitoring in soft soil areas, in particular to a device and an installation method for eliminating the influence of lattice columns on the axial force of supporting beams. Background technique [0002] With the increasing investment in national infrastructure construction, there are more and more high-rise buildings, large bridges, and subway stations, and there are more and more excavation projects for foundation pits. In the eastern coastal areas, most of the foundation pits adopt the form of internal support, and the soft soil is widely distributed in the coastal areas, which brings various problems to the excavation and construction of foundation pits. [0003] The axial force monitoring of the supporting structure is one of the main contents of the on-site monitoring of the foundation pit engineering. Through the monitoring of the axial force, the force status of the ...

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Problems solved by technology

[0004] Combined with a large number of actual engineering findings, when foundation pits are excavated in soft soil areas, the bottom of the pit is more likely to uplift, and the amount of uplift is relatively large. The movement and support of the upper beam cause abnormal axial force of the beam support, which affects the monitoring of the axial force

[0005] At present, there is still no convenient and economical method and equipment used to solve this problem. Therefore, it is becoming more and more important to develop a device that is convenient, simple, highly economical, recyclable and reusable to eliminate the influence of lattice columns on the axial force of supporting beams. Urgent problems

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