压力分散型悬锚式挡墙位移及受力特性分析

Analysis of Pressure-dispersed Anchored Cantilever Retaining Wall's Displacement and Stress

依托实体工程,利用FLAC3D程序对压力分散型悬锚式挡土墙的位移及受力进行了计算分析,通过模拟试验得出如下结论:运营期墙顶水平位移最小,底板水平位移最大,位移量沿墙高线性增长,施加预应力后墙体整体水平位移减小;墙体上部水平应力较小,底板水平应力最大,锚索位置出现应力集中,施加预应力后应力集中更为明显;锚索长度越长其运营期水平位移分量越小,轴力越大;压力分散型悬锚式挡土墙土压力大致可分为无压力区、线性增长区和土压力减小区。

Based on practical engineering, pressure - dispersed anchor cantilever retaining wallg displacement and stess were calculated by FLAC3D program. Through simulation test conclusions were obtained as follows：When the horizontal displacement of the wall crown was smallest in operating period, the horizontal displacement of bottom slab was the largest. The displacement changed linearly along the wall height, and the horizontal displacement of the whole wall decreased after being prestressed. The horizontal stress of upper wall was comparatively less, the horizontal stress of bottom slab was largest, and the stress concentration appeared in the position of anchor, which became more distinct after being prestressed. The longer the length of anchor cable, the smaller the horizontal displacements in operation period and the greater the axial force. Earth pressure of pressure - dispersed anchored cantilever retaining wall can be roughly divided into non - pressure area, earth pressure linear growth area and earth pressure reduction area.