Ultra-deep box type cantilever retaining wall structure for soft soil regions

Abstract

The invention discloses an ultra-deep box type cantilever retaining wall structure for soft soil regions. The structure comprises a box retaining wall structure, a bearing foundation pile, foundationpit enclosures and skirt reinforcing structures, wherein the box retaining wall structure is used for supporting outer soil and comprises an inner side vertical wall, an outer side vertical wall, a bottom plate, a middle floor slab, a top plate and a partition wall; the bearing foundation pile is arranged below the bottom of the box retaining wall structure and used for bearing or uplift of a base; the foundation pit enclosures are arranged on the outer side and the inner side of the box retaining wall structure and used for foundation pit excavation of the box retaining wall structure; the skirt reinforcing structures are arranged below the bottom plate of the retaining wall excavation side and used for reinforcing soft soil. The structure is simple, convenient to construct and suitable for the limited situation of peripheral sites; the bearing capacity of the foundation can be improved, and the possibility of uneven settlement can be reduced; the anti-overturning capability of the retaining wall structure can be improved, the horizontal displacement of the retaining wall structure can be prevented, and the anti-slip capacity is improved; meanwhile, the engineering quantity can bereduced, and the engineering investment is saved.

Description

technical field [0001] The invention relates to the technical field of deep foundation pits and retaining walls in civil engineering, in particular to an ultra-deep box-type cantilever retaining wall structure used in subsidence factory areas in soft soil areas. Background technique [0002] In recent years, with the accelerated development of urbanization in my country, the scale of cities has become larger and the land has become increasingly tense. Sunken squares have emerged as a new type of urban public space. Sunken squares generally need to be equipped with retaining wall structures to maintain their own stability. There are many structural types of retaining walls. The common structural types in actual engineering include gravity retaining walls, buttress retaining walls, and cantilever retaining walls. Wait. Cantilever retaining wall is a light retaining structure, which is widely used in railway, highway, water conservancy and other engineering fields due to its a...

AI Technical Summary

Problems solved by technology

Nowadays, projects with foundation pit depth or slope height greater than 6m are very common. If a buttress-type retaining wall structure is used, the construction will have a large impact area and the construction will be more troublesome.

The traditional cantilever retaining wall structure has the following disadvantages: (1) Weak anti-sliding ability; (2) Weak anti-overturning ability; (3) Uneven settlement is prone to occur under weak foundation; (4) When the wall height is high The root bending moment is too large and the wall thickness is thick

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