摘要
以开挖深度平均达20 m的某软土深基坑监测为例,分析和讨论深基坑开挖施工对周边地表沉降的影响范围与大小的规律。分析结果表明,墙后最大地表沉降为0.408%He,最小地表沉降为0.038%He,平均地表沉降为0.155%He(He为基坑开挖深度),墙后最大地表沉降位于墙后0.5 He处,主影响区域在距离1.74 He范围内;次影响区域在1.74 He以外的范围,其地表沉降较小。
The ground settlements induced by deep excavation in soft soil was investigated in this paper by taking the field measurements for a 20 m-deep excavation as an example. The results show that the maximum, minimum and average ground settlements are 0. 408% He ,0. 038% He and 0. 155% He, respectively （He denoting the depth of excavation）. The maximum ground settlement locates at the position of 0. 5 Heaway from the wall. The main influence zone is in the region of 1.74 He away from the wall, beyond which the ground settlement is much smaller.
出处
《四川建筑科学研究》
北大核心
2015年第3期46-49,共4页
Sichuan Building Science
基金
南京市建设行业科研项目计划(201313)
关键词
软土
深基坑
地表沉降
实测统计
soft soil
deep excavation
ground settlement
measurements statistics
