基坑围护结构深层水平位移量曲线分析研究

Analysis of deep horizontal displacement curve of retaining structure in foundation pit

通过绘制基坑围护结构的深层水平位移量曲线并进行分析研究,可知基坑在开挖阶段,基坑地下连续墙向基坑内会产生较大较快的位移,且最大位移量产生的位置往往会随着基坑开挖深度的增大而不断向下移动;直到支撑拆除时的施工过程中,基坑仍会有小量的向基坑内位移趋势,但变化趋势明显放缓;在后续的地下结构施工过程中,地下连续墙会产生了一定量的收敛或变化不明显。

The curves were drawn and analysed for the deep horizontal displacement of retaining structure in the foundation pit,and then it was discovered that underground continuous wall for the foundation pit has a greater and faster displacement in excavation of foundation pit,and that the position of the maximum displacement often continuously moves downward with the excavation depth increasing. Until the demolition of support in the construction process,the foundation pit still has a small displacement,but the trend obviously slows down. In the process of construction of underground structure,the underground continuous wall produces a certain amount of convergence or a less obvious change.