Three-dimensional elasto-plastic finite element analysis of a soil-pilebridge interaction  

作　　者：朱叶艇 ZHANG Zi-xin YUAN Deng-ping HUANG Xin 

机构地区：[1]Department of Geotechnical Engineering, Tongji University, Shanghai 200092, P. R. China [2]Shanghai Geotechnical Engineering Detecting Center, Shanghai 200436, P. R. China

出　　处：《Journal of Chongqing University》2017年第1期25-37,共13页重庆大学学报（英文版）

基　　金：Funded by the National Natural Science Foundation of China(No.41372276)

摘　　要：The soil-pile-bridge interaction of super-large pile groups is a very complex issue for the design of deep pile group foundations. In this paper, the load distribution on the pile top of a super large bridge foundation and its influential factors are analyzed comprehensively using a three-dimensional elasto-plastic finite element method. The adopted model and its input parameters are firstly verified by comparing the numerical results with the measured data of static loading tests of a single pile. Numerical analysis is then performed to investigate the load distribution and the load-settlement characteristics of super-large pile groups, and the models are verified using centrifuge laboratory model testing data. The mechanism of the interaction between pile groups and soil under different conditions is explored.The soil-pile-bridge interaction of super-large pile groups is a very complex issue for the design of deep pile group foundations. In this paper, the load distribution on the pile top of a super large bridge foundation and its influential factors are analyzed comprehensively using a three-dimensional elasto-plastic finite element method. The adopted model and its input parameters are firstly verified by comparing the numerical results with the measured data of static loading tests of a single pile. Numerical analysis is then performed to investigate the load distribution and the load-settlement characteristics of super-large pile groups, and the models are verified using centrifuge laboratory model testing data. The mechanism of the interaction between pile groups and soil under different conditions is explored.

关 键 词：finite element INTERACTION friction pile bridge foundation pile groups 

分 类 号：TU43[建筑科学—岩土工程]