Supporting and blocking integrated enclosure system combining supporting and digging square piles and inclined piles

Abstract

The invention relates to a first-supporting and second-digging supporting and blocking integrated enclosure system with square piles combined with inclined piles. The enclosure system is composed of the square piles, the inclined piles and a coping ring beam. The square piles are arranged in front and back rows; the inclined piles are inserted into a soil body in the direction inclined to the foundation pit by 10-25 degrees; the inclined piles are connected with the coping ring beams and the connecting beams. The method has the advantages that the square piles and the inclined piles are standard components, so that the quality is guaranteed; field construction machinery is pressed into soil, and construction is convenient; factory production is achieved, and the manufacturing cost is low; and pollution such as mud is not generated.

Description

technical field [0001] The invention relates to the field of underground engineering, in particular to the technical field of foundation pit engineering, and relates to a support-retaining integrated enclosure system in which square piles are first braced and then excavated and combined with inclined piles. Background technique [0002] As the country develops and prospers day by day, buildings rise from the ground one after another, and the use of underground space is also becoming more and more extensive. The form of underground enclosure develops accordingly, and the enclosure forms are mainly divided into self-stabilizing type, supporting type and anchoring type: self-stabilizing type includes cement-soil mixing pile gravity retaining wall, row pile and other cantilever and double-row door type, etc.; The main type is row piles combined with horizontal steel concrete support; the pull-anchor type is mainly row piles combined with pull-anchor support. Various forms have ...

AI Technical Summary

Problems solved by technology

Various forms have their own advantages and disadvantages: the self-stabilizing type has simple construction, strong adaptability, does not occupy the construction operation space in the foundation pit, and has good economy, but it is often used for the enclosure of general shallow foundation pits; For enclosures with high environmental requirements or deep excavation depths, the safety is high, but the construction period is usually more than one year, and a support is formed in the foundation pit, which limits a certain construction operation space, and the economy is average, and there are demolition residues in the later stage The problem of pollution; the anchor pull type is similar to the support type, but it has no impact on the construction space, and can flexibly strengthen coordination for local deformation positions, but compared with the support type, the overall safety is slightly lower, and it has better economy when it can be used routinely , often cannot be used due to the restriction of the red line of the construction site; the integrated support and retaining type has the construction convenience and adaptability of the self-stabilizing type, and does not occupy the construction operation space in the foundation pit, and has similar safety as the supporting type, and there is no later demolition The problem of causing secondary concrete pollution

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