地铁车站深基坑支撑轴力监测与分析

Monitoring and Analysis of Steel Support Axial Force in Deep Foundation Pit of Subway Station

基坑的稳定性对于地铁工程的顺利完成起着至关重要的作用,而基坑稳定性主要取决于内支撑的变化情况。支撑轴力的变化趋势直观地反映了基坑土压力的变化,而基坑土压力的变化则直接影响内支撑体系的稳定,因此研究支撑轴力的变化规律是分析基坑稳定性中不可或缺的一步。本文以厦门市地铁三号线创业桥站支撑轴力监测数据为基础,分析地铁深基坑在开挖过程中支撑轴力的动态变化趋势,得出基坑支撑轴力变化规律,为后续地铁深基坑优化设计和安全施工提供可靠依据。

The stability of the foundation pit plays a crucial role in the smooth completion of the subway project,and the stability of the foundation pit mainly depends on the variation of the internal support.The axial force alteration of the support visually reflects the change of the earth pressure of the foundation pit,and the change of the earth pressure of the foundation pit directly affects the stability of the internal support system.Therefore,studying the axial force alteration of the support is of necessary step for analyzing the stability of the foundation pit.Based on the monitoring data of steel support axial force of the Chuangye Bridge Station which belongs Xiamen Metro Line 3,this paper analyzes the dynamic trend of the support axial force during the excavation of subway deep foundation pit,,and obtains the variation law of the axial force of the foundation pit,which can provide a reliable basis to optimize the design and ensure construction safety.