The Coupled Eulerian-Lagrangian Analysis of Pile Jacking Process in Saturated Soft Clay by Using Modified Cam-Clay Model

doi:10.16183/j.cnki.jsjtu.2017.03.002

Abstract

Abstract:

CEL (Coupled Eulerian-Lagrangian) method was used to model the pile penetration process in soft clay. Firstly, effective stress method was used in the Vumat subroutine to calculate excess pore pressure. Comparison of the experiment results (by odometer test and triaxial test) with the numerical tests demonstrated the reliability of the Vumat subroutine. The subroutine was implemented in the CEL method of Abaqus/Explicit. Pile jacking process in soft clay under undrained conditions was simulated. The soil movements, horizontal displacement, horizontal stress, excess pore pressure were analyzed. The analysis results show that the CEL method which considers excess pore pressures can simulate well the installation effects caused by pile jacking in soft clay.

Key words: soft clay, modified Cam-Clay (MCC) model, coupled Eulerian-Lagrangian (CEL), installation effect, excess pore pressures

CLC Number:

TU473.1

MENG Zhen, CHEN Jinjian, WANG Jianhua. The Coupled Eulerian-Lagrangian Analysis of Pile Jacking Process in Saturated Soft Clay by Using Modified Cam-Clay Model[J]. Journal of Shanghai Jiao Tong University, 2017, 51(03): 263-268.

Figures/Tables 12

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