Double-row pile support structure capable of fully utilizing basement space and construction method of double-row pile support structure

Abstract

The invention relates to a double-row pile support structure capable of fully utilizing basement space and a construction method of the double-row pile support structure, and belongs to the field of building construction and room buildings. A crown beam I is arranged on the top of a front row pile, and a crown beam II is arranged on the top of a rear row pile. The top of the front row pile and the top of the rear row pile are connected through a connecting beam I. A waterproof curtain pile is arranged in a pile rear soil body of the rear row pile. After a field is leveled, all project piles are constructed according to the design. A connecting beam II is poured on the top of the cut front row pile. The connecting beam II and a negative layer basement bottom plate are integrally poured. The part between the front row pile and a minus-two floor basement outer wall is filled with layering compaction filling soil. The part between the front row pile and a minus-two floor basement bottom plate is filled with plain concrete. According to the double-row pile support structure, double-row piles are changed into a single-row-pile structure with the same rigidity by means of the equal-rigidity replacement principle of the double row piles and the single row piles, the horizontal displacement of a support structure system can be controlled, and meanwhile the foundation pit support cost can be greatly reduced; and good economical efficiency is achieved in a foundation pit project with basements with multiple layers.

Description

technical field [0001] The invention relates to a double-row pile support structure capable of making full use of basement space and a construction method thereof, belonging to the fields of building construction and house construction. Background technique [0002] With the acceleration of the urbanization process, the construction height of the buildings in the central urban area is getting higher and higher, and the basements of the buildings are developing deeper and larger, while the geological conditions are getting worse and worse, and the surrounding environment of the foundation pit project is becoming more and more complex. . There are less and less land resources available for foundation pit engineering in central urban areas, but how to maximize the use of existing land resources is the common goal of developers. At present, the support schemes commonly used in my country include: sloping excavation, soil nail wall support, pile anchor support, cement-soil gravi...

AI Technical Summary

Problems solved by technology

Slope excavation, soil nail wall support, and pile anchor support require too much support space in the central urban area, and are often not available

For the foundation pit engineering with multi-layer basement, the cantilever single-row pile support structure cannot meet the deformation requirements of the foundation pit; the cantilever double-row pile support structure has high rigidity but limited adaptability to the depth; the ordinary row pile plus inner support support High structural cost, long construction period, and insufficient utilization of basement space

Therefore, the use of traditional support structures has certain limitations

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