路堤支挡设计中h型桩结构受力分析

Mechanical Analysis of h-type Pilework in Retaining Design of Embankment

依托杭黄铁路某段路堤,运用ANSYS软件对路堤支档设计中4种不同工况下h型桩桩体7个不同位置的应力应变随荷载变化进行了分析。通过静力分析可知:结构的应力、应变主要由结构自重引起,轨道和列车荷载引起的应力、应变相对较小,对结构的强度和稳定性影响很小。通过动力分析可知:不同列车速度下,h型桩产生的位移和加速度均较小,对h型桩稳定性影响较小。

Depending on a section of the embankment along Hangzhou—Huangshan railway,in the design of subgrade retaining,the stress and strain changing with load at 7 positions on the body of h-type pile under four kinds of working conditions were analyzed with ANSYS software.By means of static analysis,it is found that the stress and strain of the works are induced by the dead load mainly,while the stress and strain induced by track and train load are relatively lower and have slight effect on the stability and strength of the works.By means of dynamic analysis,it is found that at different train speed the displacement and acceleration of h-type pile are small,and have less effect on the stability of the works.