新型组合式支挡结构有限元分析

Finite element analysis of a new combined retaining structure

随着城市建设的快速发展,组合式支挡结构正逐渐应用到实际工程中。通过有限元软件ABAQUS建立了一种新型组合式支挡结构--扶壁椅式挡土墙,其由扶壁式挡土墙和双排抗滑桩组成,研究了扶壁椅式挡土墙的位移和内力变化情况,得出以下结论:承台以上部分桩的水平位移不再明显变化;桩身轴力随深度变化呈现出先增大后减小的趋势,在同一水平位置,主桩轴力平均高于副桩轴力0.57 MN。

With the rapid development of urban construction,combined retaining structures are gradually being applied to practical projects.A new type of combined retaining structure-supporting chair type retaining wall is established by finite element software ABAQUS.It is composed of buttress retaining wall and double row anti-sliding pile.The displacement and internal force changes of the buttress type retaining wall were studied,and the following conclusions were drawn:the horizontal displacement of some piles above the cap does not change significantly,the axial force of the pile body increases first and then decreases with the change of depth.At the same horizontal position,the axial force of the main pile is higher than the axial force of the auxiliary pile by 0.57 MN.