【摘要】 从工程实际的需要和目前基坑的研究现状出发 ,考虑应力路径对软粘土应力与应变关系的影响 ,并在粘弹塑性本构模型的基础上编制二维有限元分析程序 .利用有限元程序对一组开挖时间与间歇时间不同的基坑工程进行分析 ,得到支护体系变形的时间效应及一些规律 .最后分析工程实例 ,并与实测值进行比较 .更多还原

【Abstract】 Based on the needs of engineering and the present research of deep foundation pit,this paper works out a FFM program which concerns with soil elasto-viscoplatic model and influence of stress history. A set of excavation case in different condition is calculated and analyzed. It shows that the different time of excavation and intermission will distinguish the results. By comparing the calculation with site inspection,time-dependent regularity is established.更多还原