EFFECT OF NONLINEARITY ON THE DYNAMIC BEHAVIOR OF PILE GROUPS
The aim of this paper is to demonstrate the use of a hybrid method in studying the effect of nonlinearity on the seismic- behavior of the soil-pile system. The dynamic behavior of a 2*2 pile group, with a rigid pile cap is analyzed under strong ground motion. The nonlinear near-field is modeled using finite elements and the elastic far-field is modeled using a boundary finite element method CIFECM (Consistent Infinitesimal Finite Element Cell Method). For the near-field, material-nonlinearity due to plasticity and strain hardening has been considered. The Hierarchical Single Surface (HiSS) model available in literature has been used for dealing with nonlinearity. The Hybrid Time-Frequency Domain (HTFD) method of iterative solution is used in conjunction with CIFECM to model the non-linearity and the unbounded nature of the medium respectively. The effect of material nonlinearity on seismic response of the soil-pile system is presented.
Pile Groups Nonlinear Analysis Hybrid Domain CIFECM HiSS Soil Model
B.K. Maheshwari Pavan K. Emani
Dept. of Earthquake Engineering, IIT Roorkee, India
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）