软土地区临河基坑围护设计实践  

Design Practice of Riverfront Foundation Pit in Soft Soil Area

作　　者：姚炳祥[1] YAO Bingxiang(Hangzhou Geotechnical Engineering and Surveying Research Institute Co.,Ltd.,Hangzhou 310012,China)

机构地区：[1]杭州市勘测设计研究院有限公司,浙江杭州310012

出　　处：《城市勘测》2023年第3期205-208,共4页Urban Geotechnical Investigation & Surveying

摘　　要：以杭州某临河软土基坑为例,对基坑两侧土压力不平衡问题,采用增强围护体系整体刚度、坑底内加固及搅拌桩封堵墙软分坑等常规措施。临河侧坑外土压力采用主动土压力向被动土压力转化的计算方法,对回填土宽度确定进行了优化设计,取得了良好效果,可为后续临河基坑设计、施工提供参考依据。Taking a soft soil foundation pit near a river in Hangzhou as an example,in order to solve the problem of unbalanced earth pressure on both sides of the foundation pit,the conventional measures such as strengthening the overall stiffness of the retaining system,strengthening the bottom of the pit and divide the pit with mixing pile were adopted.At the same time,the conversion method of active earth pressure to passive earth pressure is adopted to optimize the width of backfill soil,and good results are obtained,it can provide reference for the design and construction of riverfront foundation pit.

关 键 词：软土基坑 临河基坑 土压力不平衡 主动土压力 被动土压力 

分 类 号：TU753.1[建筑科学—建筑技术科学]