基于ANSYS/LS-DYNA的典型基桩缺陷有限元仿真分析

Analysis of Typical Pile Defects Finite Element Simulation Based on ANSYS/LS-DYNA

基桩作为桥梁基础部分的重要组成部分,其安全性直接关系整个桥梁的安全运营,保证基桩的完整性对桥梁结构具有重要意义。基于ANSYS/LS-DYNA有限元分析软件,并以正弦函数应力脉冲信号模拟激振力,对离析桩、截面变化桩的时域曲线进行仿真和分析,结果表明仿真模拟的结果与波动理论相一致,并能够为声波反射法基桩完整性检测提供参考。

Pile, as an important part of the bridge foundation, is directly related to the safe operation of the bridge. To ensure the integrity of pile is important for the bridge structure. Based on ANSYS / LS - DYNA finite element analysis software and analog of exciting force by sinusoidal stress pulse signal, this paper simulated and analyzed time domain curve of segregation pile and section change pile. The result showed that the simulation result is consistent with wave theory and can provide a reference for pile integrity testing by acoustic reflection.