摘要
总结了国内外学者对膨胀土在物理性质和力学特性方面的研究,并整理了关于膨胀土基坑事故产生的原因.重点阐述了膨胀土基坑双排桩支护结构在数值模拟和理论分析方面的研究现状.针对目前双排桩支护结构应用在基坑支护工程方面存在的问题,对以后的研究工作提出探讨和展望,为双排桩支护结构在膨胀土基坑中的应用研究提供了思路.
Abstract
The characteristics of water absorption and expansion,water loss and shrinkage,fracture and ultra-curing in expansive land areas affect the overall stability of foundation pit,which is easy to cause disasters such as foundation uplift,collapse and building cracks.It is a potential threat to buildings in the medium and long term,and easy to cause building deformation and destruction.The advantage of double-row pile supporting structure is that it has large lateral stiffness,which can effectively reduce the transverse deformation of the structure,so it is more suitable in expansive soil areas.This paper summarizes the research on expansive soil at home and abroad,the impact of extensive soil on foundation mines and the study of the support structure of double row piles gives the idea to study the support structure of double row piles of expansive soil base tank.
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