地铁车站深基坑变形监测及数据分析

Deformation Monitoring and Data Analysis in Deep Foundation Pit of the Subway Station

本文针对北京地铁车站某明挖深基坑在砂卵石地层的工程实例,首先论述了该工程的工程概况、基坑监测的内容、监测频率及监测周期;其次通过基坑开挖引起基坑周边土体荷载变化原理理论分析了地表沉降、桩顶水平位移、桩体水平位移分布的特点;最后通过实际监测数据总结了监测结果,运用监测时程变化曲线图表了说明监测结果与理论分析的不同与吻合之处,为今后同类工程设计、施工、处理风险事务和工程安全事故提供参考依据。

The paper illustrated by the example of engineering in a sandy cobble ground of deep foundation pit in Beijing Subway Station. The Firstly it discussed the engineering overview, the foundation pit monitoring content, monitoring frequency and monitoring cycler Secondly, it analyzed the surface subsidence , horizontal displacement of pile top, pile horizontal displacement characteristics of the distribution through the excavation around foundation pit soil load change theory; Finally, the monitoring results are summarized by the actual monitoring data, it explained the monitoring results with the theoretical analysis of the dif- ferent and anastomosis of the department using the monitoring the time curve chart, for future similar projects design, con- struction, process engineering safety accident risk transactions and provide a reference.