基于ANSYS的L型挡土墙对比分析
首发时间:2017-03-29
摘要:L型挡土墙的墙身断面较小,重量轻,圬工量小,是一种较为常用的支挡结构。但是其支护高度有限。为了解决这个问题,工程师们提出了二级L型挡土墙这一支护结构。通过采用ANSYS有限元软件进行对比分析表明:在同等条件下,二级L型挡土墙的安全系数较高,且在外荷载作用下安全系数下降速度较慢;二级L型挡土墙偏向于整体滑动破坏,而L型挡土墙偏向于倾覆破坏;二级L型挡土墙类似于带有卸荷平台的倒F型挡土墙,具有明显的卸荷减压作用;二级L型挡土墙的基底压力较小,适用于软弱地基的高边坡支护工程;设计方面,二级L型挡土墙更加经济,结构更加轻便。
关键词: 二级L型挡土墙 L型挡土墙 ANSYS 安全系数 土压力 基底压力
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L-shaped retaining wall comparative analysis based on ANSYS
Abstract:The cross section of the L-shaped retaining wall is small,light weight,small amount of masonry,which is a relatively common retaining structure.In order to solve this problem, the engineers proposed secondary l-shaped retaining wall supporting structure. using ANSYS finite element software shows that,under the same condition, the safety factor of the secondary L-shaped retaining wall is higher, and the outer loads safety coefficient decreased slower; Secondary L-shaped retaining walls tend to slip damage, however L-shaped retaining walls tend to overthrow;Secondary L-shaped retaining walls with unloading platform similar to pour F type retaining wall, have obvious unloading relief effect; Secondary L-shaped retaining walls of basement pressure is small, suitable for the high slope of weak foundation supporting engineering;Design aspect, the secondary L-shaped retaining wall is more economic and more lightweight structure.
Keywords: Secondary L-shaped retaining walls L-shaped retaining walls ANSYS Safety factor Earth pressure Basal pressure
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