摘要
本文以某具体项目工程为例,明确在各开挖时序下产生的基坑实际情况,经由数值模拟后表明:受开挖持续性影响,软土地基出现的地表沉降尤为明显,几乎达到了基坑开挖深度的4倍;同时周边出现大范围水平位移,达到了实际开挖深度的6倍;此外,支撑受力情况也较特殊,表现出由上至下持续增加的特性。通过上述分析,为基坑施工提供准确资料,可进一步确定可行的基坑施工方法。
Taking a specific project as an example,and makes clear the actual situation of the foundation pit generated in each excavation sequence,the numerical simulation shows that the surface settlement of soft soil foundation is especially obvious,which is almost 4 times of the excavation depth.At the same time,there is a large range of horizontal displacement around,reaching 6 times of the actual excavation depth.In addition,the support stress is also more special,showing the characteristics of continuous increase from top to bottom.Through the above analysis,the accurate data for foundation pit construction can be provided,and the feasible foundation pit construction method can be further determined.
作者
章凯伦
ZHANG Kailun(Zhejiang Engineering Investigation Institute,Ningbo Zhejiang 315012,China)
出处
《北方建筑》
2019年第6期7-10,共4页
Northern Architecture
关键词
软土地区
地表沉降
基坑变形
the soft soil area
the surface subsidence
deformation of foundation pit
