水平荷载作用下斜桩群桩的有限元分析

Finite Element Analysis of Batter Pile Group under Horizontal Load

摘要:

采用三维有限元数值方法对斜桩群桩在水平荷载作用下的承载特性进行了研究，对比了相同布置形式的3×3直桩和斜桩群桩的各项响应差异。分析结果表明，在3倍桩径桩间距条件下，斜桩群桩中基本不存在与直桩群桩相类似的群桩效应。斜桩群桩由于较好地发挥了基桩的轴向承载特性，故而整体抵抗水平荷载的能力显著高于直桩群桩。

Abstract:

Three-dimensional finite element numerical analysis is used to study the bearing characteristics of batter pile group under the horizontal load, and compare various response differences of straight pile and batter pile groups in the 3×3 same arrangement form. The analysis results show that the pile group effect similar to that of the straight pile group basically does not exist in the batter pile group under the condition of 3 times pile diameter and pile spacing. The batter pile group gives play to the axial direction bearing characteristics of foundation pile better. Therefore, the overall capacity to resist the horizontal load is obviously higher than the straight pile group.