Numerical simulation on seismic response of embankment on liquefiable sand using adaptive time stepping method

被引：0
作者：
Zhang, Xi-Wen [1 ,2 ]
Tang, Xiao-Wei [1 ,2 ]
Uzuoka, Ryosuke [3 ]
机构：
[1] State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian
[2] Institute of Geotechnical Engineering, Dalian University of Technology, Dalian
[3] Institute of Geotechnical Engineering, The University of Tokushima, Tokushima
来源：
Shuili Xuebao/Journal of Hydraulic Engineering | 2014年 / 45卷 / 09期
关键词：
Adaptive time stepping; Embankment; Posteriori error estimation; Seismic liquefaction;
D O I：
10.13243/j.cnki.slxb.2014.09.012
中图分类号：
学科分类号：
摘要：
In the process of earthquake liquefaction, the soil is characterized by high material nonlinearity. Larger time step size induces larger computational error in the dynamic numerical analysis. In this paper, based on the explicit numerical platform of solid-fluid coupled elasto-plastic finite element method and Newmark time domain discretization scheme, a posterior error estimator of temporal discretization and an adaptive time stepping method are implemented in the program, then the adaptive time stepping method is applied in the simulation of embankment seismic response. In the numerical example, the behavior of embankment deformation, excess pore water pressure ratio and average relative error using adaptive time step and fixed time step are compared. The results show that the proposed adaptive time stepping method can obtain high calculation accuracy, and also can improve calculation efficiency and save computational cost in the explicit dynamic numerical simulation. © 2014, China Water Power Press. All right reserved.
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页码：1106 / 1113
页数：7
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