软弱地层深挖基坑中工程桩偏位分析  

BEHAVIOR OF PILES SUBJECTED TO EXCAVATION-INDUCED SOIL MOVEMENT

作　　者：肖军华[1] 刘建坤[1] 韩爱民[2] 

机构地区：[1]北京交通大学土建学院,北京100044 [2]南京工业大学土木工程学院,南京210009

出　　处：《工程地质学报》2006年第3期405-410,共6页Journal of Engineering Geology

基　　金：江苏省高校自然科学研究计划项目(04KJB560048)

摘　　要：某软土地基上建造多栋毗邻的小高层住宅,在地下车库基坑的开挖过程中,软土流动推挤坑内桩基导致偏位。文章以上述工程为背景,借助三维有限差分程序FLAC3D,选取简化计算模型,对基坑开挖流动土体作用下工程桩的反应性状进行了模拟与分析,并与实测值进行了比较,最后讨论了影响桩基变形的相关因素,可为分析软土地区基坑开挖对坑内工程桩影响时提供一定的理论指导。Two neighbor tall buildings are constructed on soft soil ground. The piles of the buildings are subject to deflection due to excavation - induced soil movement. Based on the project, three - dimensional finite - difference program is applied to calculate the deflection of piles due to the soil lateral movements. The effects of pit excavation on pile deflection have also been studied.

关 键 词：基坑 流动土体 工程桩 偏位 

分 类 号：TU447[建筑科学—岩土工程]