格栅加筋土挡墙弹塑性动力有限元分析  

Elasto-Plastic Dynamic FEM Analysis for Geogrid Reinforced Soil Retaining Wall

作　　者：周世良[1] 李勤民[1] 郑红娟[1] 

机构地区：[1]重庆交通大学河海学院,重庆400074

出　　处：《港工技术》2006年第4期40-43,共4页Port Engineering Technology

基　　金：广东省交通厅科技项目(2003-18);重庆市教委科技项目(040406)

摘　　要：基于自洽理论和应变相容观点建立了筋土复合材料力学模型,编制了可用于求解连续介质在平面应力、平面应变和轴对称情况下的非线性动力响应的有限元分析程序,并对一台阶式格栅加筋土挡墙的结构特性进行弹塑性动力有限元分析。数值分析全面地反映了墙体及后方填土内部的位移、应力、筋带拉力及塑性区的分布和变化规律,并与工程实际及大尺度模型试验测试结果吻合较好。Based on the self-consistent theory and concept of strain consistency,a mechanical model for soil-reinforced composite material was advanced,and a elasto-plastic dynamic numerical analysis program was compiled by FEM. Using it,the structural characteristics of a stepped geogrid RSRW were analyzed.The evolution regularity on displacement,stress,geogrid puli and plastic zone of the RSRW were opened out roundly.Compared with model experiment,it can be seen that the results calculated by the present method are commendably consistent with those tested by model experiment.

关 键 词：格栅加筋土挡墙 复合材料 弹塑性 有限元 

分 类 号：O344.7[理学—固体力学] TU472.34[理学—力学]