简述地基土损失对桩基动力特性的影响

本文针对现在一些桥梁下部结构由于种种原因,使得地基土侵蚀,桩基裸露了出来。这些病害造成了不安全因素,为了找到这些病害对结构的动力特性有什么影响,本文通过建立有限三维模型进行分析对比,来模拟这些病害发生时结构自振频率的变化。

Influence of Foundation Soil Loss in Dynamic Characteristics of Pile Foundation

Aiming at the problems that the foundation soil loses and the pile foundation is exposed,which causes insecurity,this paper focuses on the influence of the diseases in the structural dynamic characteristics;it analyzes and compares by establishing finite three dimensional model to simulate the natural frequency change of the structure with these diseases.