岩土力学2017，Vol.38Issue(7)：2071-2079,9.DOI:10.16285/j.rsm.2017.07.030
饱和多孔介质动力响应移动单元法分析
Analysis of dynamic response of saturated porous media by moving element method
摘要
Abstract
Moving element method (MEM) is an efficient approach for dynamic analysis of structure under moving loads.However,a paucity of the research adopting the method for the dynamic analysis of the saturated porous media was found in literature.Based on the coupled dynamic field equation u-p formulation,MEM formulations of the transient-state and steady-state dynamic control equations are obtained.The accuracy and the effectiveness of the technology demonstrated through the results that are in general consistent with each other by the semi-analytical and numerical solution.An example of involving the moving load on the saturated pavement overlying elastic base course is analyzed based on MEM.The transient dynamic response and the steady dynamic response are explored.The results show that obvious transient effect comparing with the steady-state dynamic response is indicated by hydrodynamics.Based on the results of steady-state dynamic response,the influences of load velocity,drainage boundary and permeability coefficient on the dynamic response of saturated asphalt pavement are analyzed.The results of the study can provide a reference for analyzing the damage mechanism of asphalt pavement water stability under hydrodynamic action.关键词
饱和多孔介质/移动单元法/u-p方程/瞬态动力响应/稳态动力响应Key words
saturated porous media/moving element method/u-p formulation/transient dynamic response/steady-state dynamic response分类
建筑与水利引用本文复制引用
刘宝,苏谦,李婷,桂波..饱和多孔介质动力响应移动单元法分析[J].岩土力学,2017,38(7):2071-2079,9.基金项目
国家自然基金项目(No.51378441,No.51578467) （No.51378441,No.51578467）
中国铁路总公司科技研究开发计划(No.2016G002-E,No.2014G003-A).This work was supported by the National Natural Science Foundation of China (51378441,51578467) and Development Plan of the Chinese Railway Corporation (2016G002-E,2014G003-A). （No.2016G002-E,No.2014G003-A）
