岩土力学2013，Vol.34Issue(3)：849-855,7.
多向荷载作用下层状地基刚性桩筏基础分析
Analysis of rigid piled raft foundations subjected to coupled loads in layered soils
纠永志 1黄茂松 2木林隆 1连柯楠2
作者信息
- 1. 同济大学地下建筑与工程系,上海200092
- 2. 同济大学岩土及地下工程教育部重点实验室,上海200092
- 折叠
摘要
Abstract
A simplified analytical approach is proposed to study the behavior of piled raft foundation with rigid raft subjected to coupled loads in layered soils. Based on the shear displacement method, using the transfer matrix, the pile-pile interaction under vertical load is analysed. Adopting the modified subgrade modulus, the pile head-pile head interaction under horizontal load is analyzed through the finite difference method. Based on solutions for stress and displacement in layered elastic half space, the interactions between pile head and soil surface, soil surface and pile head, soil surface and soil surface subjected to coupled loads are taken into account to determine the flexibility matrix of the pile group-soil system. Then the load-settlement relationship of rigid piled raft foundations subjected to coupled loads, load and settlement of the piles along the depth are obtained. Comparison between the finite element results and the calculated results is carried out; and the feasibility of the present method for analyzing piled raft foundation and the superiority of the modified subgrade modulus are proved. The piled raft foundation with rigid raft subjected to coupled loads is analysed. The calculating results indicate that the horizontal load will cause the pile raft foundation oblique.关键词
层状地基/桩筏基础/多向荷载/相互作用Key words
layered soil/ piled raft foundation/ coupled loads/ interaction分类
建筑与水利引用本文复制引用
纠永志,黄茂松,木林隆,连柯楠..多向荷载作用下层状地基刚性桩筏基础分析[J].岩土力学,2013,34(3):849-855,7.
