Novel foundation pit supporting structure

Abstract

The invention discloses a novel foundation pit supporting structure. The structure comprises a continuous steel plate pile, joist steel surrounding purlins, an anchor cushion plate, an anchorage device and an anchor cable, the continuous steel plate pile is a groove steel plate, the section of a groove in the continuous steel plate pile is trapezoid, the two joist steel surrounding purlins are fixed to the upper side and the lower side of the continuous steel plate pile correspondingly, the anchor cushion plate is fixed between the joist steel surrounding purlins in a striding manner, one endof the anchor cable is fixed into a stable soil layer through cement slurry, the other end of the anchor cable penetrates through the continuous steel plate pile and penetrates out from a gap reservedbetween the joist steel surrounding purlins, and the end of the anchor cable passes through the anchor cushion plate and penetrates out of the anchorage device and is fixed to the anchorage device. According to the supporting structure, the section shape of the steel plate pile can be changed, the resistance during driving into the steel plate pile can be reduced, the brought soil amount when thesteel plate pile is pulled out can be reduced, and the influence on the surrounding can be reduced.

Description

technical field [0001] The invention relates to the technical field of building foundation pit support, in particular to a novel foundation pit support structure. Background technique [0002] The foundation pit project is to excavate an underground space from the ground down. A vertical retaining enclosure structure is generally set around the deep foundation pit. The enclosure structure is generally a board wall structure with a certain insertion depth under the base of the excavation surface; the board wall There are cantilever type, single support type and multi support type. The support structure is to reduce the deformation of the enclosure structure and control the bending moment of the wall, which is divided into two types: inner support and outer anchor. [0003] In our country, there are row piles, ground continuous wall, gravity retaining wall, soil nail wall and the combination of these structures. Steel sheet piles are the most widely used type of piles. They ...

AI Technical Summary

Problems solved by technology

However, most of the existing steel sheet piles use "U" cross-section steel sheets, which have high resistance when driven into the foundation and will cause soil extrusion, and when pulled out, the soil will be brought out again, resulting in gaps in the sheet pile position , which will have a certain impact on the surrounding environment

Images