柔性支护基坑雨后浅层滑坡成因及处理措施  

REASONS AND TREATMENT MEASURES FOR SHALLOW LAYER RAIN LANDSLIDE IN FOUNDATION PIT WITH FLEXIBLE SUPPORT

作　　者：卢一凡 李惠强[2] 卢昱 孙杰[4] 

机构地区：[1]武汉市建筑工程质量监督站,武汉430019 [2]华中科技大学土木工程与力学学院,武汉430071 [3]武汉天晔空间设计有限公司,武汉430023 [4]武汉市建设工程设计审查办公室,武汉430023

出　　处：《建筑技术》2013年第6期490-493,共4页Architecture Technology

摘　　要：根据基坑边坡失稳现场的观察,针对粘性土地域的柔性支护体系易于发生雨后浅层滑坡问题,通过粘性土遇水软化试验和边坡安全性计算程序,对造成事故的原因进行分析,证实土体开裂和浸水软化才是引发浅层滑坡的根本原因,提出了改变放坡坡率、坡顶防裂、防雨水浸渗等预防措施。After field observation about conditions of instable side slope in foundation pit and consideration of frequent shallow layer rain landslide of flexible supporting system in clay soil stratum, reasons causing landslide accident are analyzed through the test that clay soil may be softened by water and side slope safety calculation procedure. The analysis results verify that soil collapse and water softening are the primary reasons causing shallow layer landslide. Relevant prevention measures are adopted, such as modification of slope gradient, crack prevention at slope crest and prevention against rain penetration, ete.

关 键 词：基坑 柔性支护 浅层滑坡 粘性土 干湿循环 

分 类 号：TU753.8[建筑科学—建筑技术科学]