桥墩桩基施工过程对地层影响的数值分析

Numerical Analysis on Stratigraphic Impact by Pile Foundation Construction Process of Bridge Pier

桥墩桩基施工过程不可避免地会对地层产生扰动影响,其对地层不同深度处的应力和位移的影响规律及对地层的影响范围是影响桥梁桩基稳定性的主要因素。文章采用三维有限元方法对桩基施工过程进行模拟,分析桥墩桩基施工过程对原始地层应力与位移的变化规律,确定桩基施工对地层的影响范围,为类似工程施工提供参考。

The pier pile foundation construction process inevitably produces disturbance on the stratum,its influence on the stress and displacement of stratum at different depths as well as the impact scope on the stratum are the main factor affecting the stability of bridge pile foundation.This article used three-dimensional finite element method to simulate the construction process of pile foundation,analyzed the variation rules of bridge pier pile foundation construction process on the stress and displacement of original stratum,and determined the impact scope of pile foundation construction on the stratum,thus providing the reference for the construction of similar projects.