寒区隧道渗流场和温度场耦合问题的三维非线性分析  

Three-dimensional nonlinear analysis for coupled problem of seepage field and temperature field of cold regions tunnels

作　　者：张学富[1] 喻文兵[2] 刘志强[2] 

机构地区：[1]重庆交通大学土木建筑学院,重庆400074 [2]中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室,甘肃兰州730000

出　　处：《岩土工程学报》2006年第9期1095-1100,共6页Chinese Journal of Geotechnical Engineering

基　　金：重庆交通学院启动基金资助项目;交通部公路科学研究所预研基金资助项目;国家杰出青年科学基金项目(40225001);国家自然科学基金资助项目(40401010);中国科学院知识创新工程重要方向项目(KZCX3-SW-351);国家基础学科人才培养资助项目(J0130084);中国科学院知识创新工程重大资助项目(INF105-SDB-1-21);国家科技攻关项目"西部开发科技行动"重大资助项目(2004BA901A02)

摘　　要：根据传热学和渗流力学的基本理论,考虑冻土渗流场和温度场的耦合影响,建立冻土渗流场和温度场耦合问题的三维数学模型,应用Galerkin法进行有限元分析,并编制有限元分析程序。运用该数学模型和有限元分析程序,进行了青藏铁路昆仑山隧道DK977+578～DK977+682浅埋段的温度场以及渗流场和温度场耦合问题的三维非线性分析。分析结果表明:渗流场对隧道围岩的温度场影响较大,在寒区隧道工程设计时,应该考虑渗流场与温度场的耦合影响。According to the essential theories of heat transfer and seepage, considering the coupled effects of seepage field and temperature field, three-dimensional computational model of the coupled problem was given, the finite element formulae of this problem were obtained by Galerkin＇s method, and the computer program of the finite element was written. Using this model and the program, three-dimensional nonlinear analysis for the coupled problem of seepage field and temperature field of the flat excavated part from DK977＋578-DK977＋682 in Kunlun Mountain tunnel on Qinghal-Tibet Railway were made. It was shown that the effect of seepage field on temperature field in the tunnels in cold regions was very large, and seepage field should be taken into account during the design.

关 键 词：寒区隧道 渗流场 温度场 耦合问题 

分 类 号：O241[理学—计算数学]