地铁车站围护结构桩体变形监测中有关问题的初步探讨

Research on horizontal deformation monitoring around deep foundation piles at subway stations

本文结合北京某地铁车站深基坑围护结构桩体变形监测工程,研究了基坑桩体水平位移变形规律。通过公式推导得出桩体变形机理,利用实测数据对基坑的桩体水平位移变化值进行了统计分析,得出了在不同开挖时期桩体变形规律,具有一定的实用价值。

This paper studies the mechanism of the horizontal displacement of foundation pit and applies it to the deformation monitoring project of the deep foundation piles at a Beijing subway station.The formulas for deformation mechanism of piles are deduced and used to statistically analysis of the real horizontal displacement observations of the pile foundation.Specific characteristics of the horizontal deformation during the excavation are presented and should be helpful for the other similar practice.