冻土墙围护深基坑开挖的蠕变有限元数值模拟  

Finite element numerical simulation on creep of excavation of deep foundation pit conserved by frozen soil wall

作　　者：王连花[1] 杨更社[1] 李宝花[1] 张全胜[1] 

机构地区：[1]西安科技学院建筑与土木工程学院,陕西西安710054

出　　处：《西安科技学院学报》2003年第2期147-150,共4页

基　　金：国家自然科学基金项目(10072047)

摘　　要：讨论了有限元数值法在冻土墙围护深基坑开挖中的应用,给出了适合于冻土墙的流变模型,并进行了参数识别。在考虑时间因素的前提下,对冻土墙围护深基坑开挖进行了蠕变有限元数值模拟,得到了墙体及基底变形随时间的变化规律,并和利用弹塑性模型计算出的结果进行了比较,得出了一些有意义的结论,为今后冻土墙的设计施工提供了重要的参考价值。The application of finite element numerical simulation of excavation of deep foundation pit conserved by frozen soil wall is discussed, creep model and parameter of frozen soil wall is given. On the premise of time involved. Finite element numerical simulation on the creep of excavation of deep foundation pit conserved by frozen soil wall is carried out, the curve of frozen soil wall and fundus rise with different time is gained. The paper compares the result of making use of elasticityplasticity model with the result of making use of creep model. Many significant conclusions are gotten and some valuable methods for construction and design of frozen soil wall is given.

关 键 词：冻土墙 蠕变 有限元 数值模拟 

分 类 号：TU452[建筑科学—岩土工程]