多年冻土区路桥过渡段沉降特性数值模拟研究  

Numerical Simulation of Settlement Characteristics of Road-bridge Transition Section in Permafrost Region

作　　者：鲁得文[1] 曹继伟[2] Lu Dewen;Cao Jiwei(Yangling Vocational and Technical College,Yangling,Shanxi 712100;Tianjin Road and Bridge Administration Department Quality Supervision Station,Tianjin 300171)

机构地区：[1]杨凌职业技术学院,陕西杨凌712100 [2]天津市道路桥梁管理处质量监督站,天津300171

出　　处：《江西建材》2021年第4期179-180,共2页Jiangxi Building Materials

基　　金：杨凌职业技术学院自然科学研究基金项目(No:ZK20-32)。

摘　　要：通过ANSYS有限元数值模拟软件研究了热棒在多年冻土区路桥过渡段的作用,研究结果表明:埋设热棒以后在路基下形成了一个低温冻土核,明显改变了路基温度场的分布特征,热棒工作期间其周围土体温度被大大降低。研究结果对完善多年冻土区路桥过渡段工程热防护设计方法,改善其技术状况,保证多年冻土区铁路安全运营具有重要的现实意义。The function of hot rod in the transition section of road and bridge in permafrost region is studied by ANSYS finite element numerical simulation software,The test results indicated:After embedding hot rods,a low-temperature frozen soil core is formed under the embankment,which obviously changes the distribution characteristics of the embankment temperature field,and the surrounding soil temperature is greatly reduced during the work of hot rods.The research results have important practical significance for improving the design method of thermal protection of road and bridge transition section engineering in permafrost region,improving its technical condition and ensuring the safe operation of railway in permafrost region.

关 键 词：数值模拟 多年冻土 路桥过渡段 

分 类 号：U24[交通运输工程—道路与铁道工程]