摘要
泉州某软土基坑在开挖至底板设计标高时,发生了滑塌事故。滑坡长度达72m,基坑侧壁发生严重的侧向位移,滑裂面处出现了较大的裂缝。本文针对该基坑滑塌面的特征,对滑塌处的支护结构进行了分析,阐明了基坑失稳破坏的原因,并根据再次勘察后的土体强度对滑塌处改进了支护设计,并对加固治理方案进行了分析评价。本文的研究结果对于软土地区类似的基坑工程有一定的参考价值。
The sliding accident happened when the excavation of the foundation pit came to the design elevation of a foundation pit with soft soil in Quanzhou.The Landslide length is 72 meters,and the side wall displacement of the foundation pit occurred,which caused the larger cracks at the sliding surface.Aiming at the characteristics of the sliding surface,the supporting structure is analyzed and the failure causes of the foundation pit are expounded.According to the strength from the second investigation of the site, the improvement of the reinforcement design is carried out and the reinforcement scheme is evaluated. The study could supply the reference for the similar foundation pit engineering in soft soil.
出处
《工程勘察》
CSCD
北大核心
2010年第2期10-13,18,共5页
Geotechnical Investigation & Surveying
基金
侨办科研基金资助项目(09QZR03)
关键词
软土基坑
失稳分析
土钉
设计改进
soft soil foundation pit
failure analysis
soil nailing
design improvement
