附加应力法对湿陷性黄土地基的纠偏效果分析  

Analysis on the rectification effect of collapsible loose foundation with stress-adding method

作　　者：衡涛[1] 范家骅[2] 宋彧[3] 

机构地区：[1]深圳大学建筑与城市规划学院,广东深圳518060 [2]中交第四航务工程勘察设计院有限公司,广东广州510230 [3]兰州理工大学土木工程学院,甘肃兰州730050

出　　处：《山西建筑》2013年第1期57-60,共4页Shanxi Architecture

摘　　要：根据应力附加法纠偏原理,建立Mohr-Coulomb有限元模型,应用ADINA分析软件,与工程实例纠偏结果进行对比,分析了应力附加法的挖孔深度与地基沉降变形、应力分布之间的关系,得到挖孔深度与地基沉降变形、应力分布之间的规律,找出最佳挖孔深度,确定应力附加法的最佳挖孔深度为基础宽度的1/3时,两侧沉降差最大,纠倾效果达到最佳状态,对建筑物纠偏具有一定指导意义。According to the rectification principle of stress-adding method, the paper establishes Mohr-Coulomb finite element model, applies ADINA analysis software, compares its rectification effect to actual engineering rectification effect, analyzes the relationship between its excava- tion depth and foundation subsidence deformation and stress distribution, and finds out their laws and finally obtains optimal excavation depth. And then, it determines the optimal excavation depth should be 1/3 of foundation depth, the lateral subsidence value will be largest and the rec- tification effect will be best, which has certain guiding meaning for building rectification.

关 键 词：ADINA 应力附加法 挖孔深度 纠倾 

分 类 号：TU433[建筑科学—岩土工程]