Inverse method foundation pit horizontal beam plate supporting structure deformation control method and device

Abstract

The invention discloses an inverse method foundation pit horizontal beam plate supporting structure deformation control method and device. According to the provided inverse method foundation pit horizontal beam plate supporting structure deformation control method and device, the problem that the deformation of existing foundation pit peripheral fender piles or foundation pit peripheral fender walls towards a foundation pit is overlarge, so that the significant hidden danger is caused to the foundation pit safety and the foundation pit outer pipeline safety can be effectively solved. The device comprises foundation pit peripheral fender piles or foundation pit peripheral fender walls and a horizontal beam plate arranged in a foundation pit, the horizontal beam plate is used for supportingwater and soil pressure transmitted by the foundation pit peripheral fender piles or the foundation pit peripheral fender walls, post-cast strips are arranged on the horizontal beam plate and divide the horizontal beam plate into a plurality of areas, deformation active control devices are arranged in the post-cast strips, the deformation active control devices comprise hydraulic jacks and inserting piece type locking and supporting devices which are arranged in the post-cast strips and used for transmitting the water and soil pressure, and the inserting piece type locking and supporting devices comprise a plurality of inserting pieces.

Description

technical field [0001] The invention relates to a support structure for a foundation pit, in particular to a method and device for controlling deformation of a horizontal beam-slab support structure for an inverse foundation pit. Background technique [0002] With the continuous development of urban underground space, the plane scale and depth of the basement are getting larger and larger. The newly poured concrete beams and slabs will shrink during the hardening process, and most of the hardened shrinkage of the concrete beams and slabs will be completed in the first 1 to 2 months after construction. When the deformation is restrained, temperature stress will be generated inside the structure. Cracks will appear in the components; in order to reduce the influence of hydration heat during the concrete pouring process of the basement floor, during the construction process, a post-cast belt will be set on the horizontal beam plate of the basement, and the post-settlement belt ...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a method and device for controlling deformation of the horizontal beam-slab support structure of an inverse foundation pit, which can effectively solve the problem of the earth pressure outside the foundation pit surrounding the protective piles or the surrounding retaining walls of the foundation pit. Under the action, the deformation into the foundation pit is too large, which will cause a major hidden danger to the safety of the foundation pit and the safety of the pipeline outside the foundation pit.

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