铁道标准设计Issue(12)：45-49,5.DOI:10.13238/j.issn.1004-2954.2015.12.011
冻土区病害桩基容许承载力的数值模拟分析
Numerical Simulation Analysis of Allowance Bearing Capacity of Defected Pile Foundation in Permafrost Region
摘要
Abstract
Studies find that the temperature field changes may impact pile foundation bearing capacity in plateau permafrost regions. In view of the decrease of pile foundation bearing capacity and the complex soil temperature condition where piles are located, a model of pile temperature field is established with ANSYS finite element software to analyze the impact of the change of temperature field on pile bearing capacity. The results show that confined water, solar radiation and global warming may raise the temperature at pile-soil interfaces and reduce pile bearing capacity. The impact of temperature field on pile stability in permafrost region is not to be ignored. Calories into permafrost region shall be minimized during pipe foundation construction so as reduce thermal disturbance of the permafrost soil.关键词
冻土桩/容许承载力/温度场/有限元Key words
Pile foundation in permafrost region/Allowance bearing capacity/Temperature field/Finite element分类
交通工程引用本文复制引用
刘振,郭春香,吴亚平..冻土区病害桩基容许承载力的数值模拟分析[J].铁道标准设计,2015,(12):45-49,5.基金项目
国家自然科学基金资助项目(51268033) （51268033）
国家自然科学基金重点项目(51236003) （51236003）
长江学者和创新团队发展计划资助(IRT1139) （IRT1139）
