深基坑变形观测方案及结构研究

Research on Deformation Observation Scheme and Structure of Deep Foundation Pit

为保证基坑施工期间的安全性,文章总结了深基坑的变形原理和变形观测目的,以某地铁隧道的深基坑项目为研究对象,从测点布置、观测频率、预警标准、异常数据处理等方面阐述了深基坑变形观测方案,并对支护桩桩顶水平位移和周边地表沉降随观测时间的变化规律进行分析,研究成果可供类似项目参考。

In order to ensure the safety during the construction of foundation pit,this paper summarizes the deformation principles and deformation observation purpose of deep foundation pit.Taking the deep foundation pit project of a subway tunnel as the research object,the deformation observation scheme of deep foundation pit is expounded from the aspects of measuring point arrangement,observation frequency,early warning standard and abnormal data processing.The variation law of horizontal displacement of supporting pile top and surrounding surface settlement with observation time is analyzed.The research results can be used as reference for similar projects.