长江科学院院报2001，Vol.18Issue(1)：41-44,4.
竖向荷载下群桩承载特性的弹塑性分析
Elastico-plastic analysis on load-bearing characteristics
of pile groups under vertical loads
胡汉兵 1余祖明2
作者信息
- 1. 长江科学院 土工研究所,
- 2. 交通部第二航务工程勘察设计院,
- 折叠
摘要
Abstract
3-D elastico-plastic finite element method was used to analyse the behavior of vertically loaded pile groups by using Lade-Duncan model and stiff-plastic thin unit model respectively,to simulate elastico-plastic soil body and the relative movement between piles and the surrounding soil.The analytic results showed that the obvious differences of the load-bearing characteristics of pile groups exist for large or small pile spacings,i.e.,the surrounding friction resistance of pile group with large pile spacing occurs “settling softening” phenomenon,which is different from “settling hardening” of those with small pile spacing; To increase pile spacing is benificial to transferring load to soil under the supporting platform and thus can increase the ratio of platform′s load to total load;With the increase of load,the differences of reaction on pile tops decrease,and the distribution of total load on group piles trends towards approximately uniform.关键词
群桩/三维有限元/弹塑性分析/界面单元/承载特性分类
数理科学引用本文复制引用
胡汉兵,余祖明..竖向荷载下群桩承载特性的弹塑性分析[J].长江科学院院报,2001,18(1):41-44,4.
