Cantilever supporting structure combining sheet pile and T-shaped thin-wall pile

Abstract

A cantilever supporting structure combining a sheet pile and a T-shaped thin-wall pile comprises the T-shaped pile, the sheet pile and a cap beam. The cantilever supporting structure is characterized in that the T-shaped pile comprises a T-shaped concrete body, a prestress steel strand and a shear resisting mesh, the sheet pile comprises a rectangular concrete body and a prestress steel strand, the sheet pile is vertically arranged on the outer side of the flange of the T-shaped pile, and the cap beam is arranged at the top of the T-shaped pile and the top of the sheet pile. According to the cantilever supporting structure, the large-separation-distance prestress T-shaped pile is adopted as a bending resistant and shear resistant component, advantages of the T-shaped pile is brought into full play, deformation is small, and cost is greatly reduced.

Description

technical field [0001] The invention relates to the field of geotechnical engineering, in particular to a foundation pit support or water conservancy embankment technology. Background technique [0002] When it is applied to a foundation pit with a shallow excavation depth or a river bank embankment, a gravity retaining wall is usually used, and its construction speed is slow and its safety is poor. If the support pile structure is used, the cantilever structure is usually installed, but the cantilever support structure has high requirements on the bending stiffness and pile depth of the support pile, and this form of support structure is usually very expensive. The taller T-shaped piles have strong bending resistance. If they are arranged in a close arrangement, their capabilities cannot be fully utilized. Only by widening the spacing can the advantages of the supporting piles be fully utilized, and at the same time greatly reduce the cost, but the pile must be solved. Spa...

AI Technical Summary

Problems solved by technology

[0002] When applied to foundation pits with shallow excavation depths or river bank embankments, gravity retaining walls are usually used, which has slow construction speed and poor safety

If the support pile structure is usually installed with cantilever, but the cantilever support structure has high requirements on the bending stiffness and pile depth of the support pile, this form of support structure is usually very expensive

The taller T-shaped piles have strong bending resistance. If they are arranged in a close arrangement, their capabilities cannot be fully utilized. Only by widening the spacing can the advantages of the supporting piles be fully utilized, and at the same time greatly reduce the cost, but the pile must be solved. Intermittent soil leakage and soil arching problems

A combination support structure with small deformation and good economy has not been reported yet

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