摘要
运用概率统计方法,对某富水砂性地层深基坑施工过程监测数据进行分析,并结合计算分析,探讨了围护结构变形特性及其控制指标取值,以及地表沉降、支撑轴力间的内在关系分析,并对开挖影响范围等作了研究。结果表明:此种地层下围护结构变形容易控制,最大变形位于中部,且从开挖面往下,变形迅速减小,且底部位移很小,此现象同软土地区围护结构变形特征有较大区别。
The author carried out monitoring data analysis of a rail transit deep foundation excavation at watered sandy stratum using probability statistics method, and obtained the same deformation law. Based on theoretical analysis, the enclosure structure deformation characteristics and monitoring index has been further discussed, including the relationship between ground settlement and strut axial forces and the excavation influence scope. The results showed that at this stratum , the enclosure structure deformation can be easy to control, and the middle deformation is the biggest. In addition, the deformation decreases rapidly from excavation face to the bottom, which is the larger difference characteristics between the watered sandy stratum and the soft soil area.
出处
《施工技术》
CAS
北大核心
2013年第20期99-102,共4页
Construction Technology
关键词
基坑
富水砂性地层
变形特性
监测
数值模拟
foundation excavation
watered sandy stratum
deformation features
monitoring
simulation
作者简介
黄展军，高级工程师，E-mail：531375449@qq．com
