节点文献

季节性冻土区隧道温度场分析与预测

Analysis on and Prediction of Temperature Field of Tunnels Located in Seasonal Frozen Area

  • 推荐 CAJ下载
  • PDF下载
  • 不支持迅雷等下载工具,请取消加速工具后下载。

【作者】 杨旭严松宏马丽娜

【Author】 YANG Xu1,2,YAN Songhong2,MA Lina2(1.Key Laboratory of Road,Bridge and Underground Engineering of Gansu Province,Lanzhou Jiaotong University, Lanzhou 730070,China;2.School of Civil Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)

【机构】 兰州交通大学甘肃省道路桥梁与地下工程重点实验室兰州交通大学土木工程学院

【摘要】 为预防季节性冻土区隧道因防寒保温措施设置不足引发的冻害,研究季节性冻土区吐库二线中天山隧道温度场变化规律及其防寒保温参数。基于围岩温度场现场测试研究,利用ANSYS有限元软件,同时考虑水文地质条件、混凝土衬砌水化热、大气温度和地温随时间变化等影响因素,预测、比较隧道施加保温层和未施加保温层的冻融循环圈。总结出设置保温边沟和设置厚度≥5cm、导热系数≤0.03 W/(m·K)的保温层是必要和合理的。

【Abstract】 The temperature field variation rules and thermal retardation parameters of Zhongtianshan tunnel on Turpan-Korla railway located in seasonal frozen area are studied,so as to avoid damages caused by insufficient thermal retardation countermeasures.Prediction and comparison and contrast are made on the freezing-thawing cycle ring of tunnels with and without thermal retardation layers,by means of ANSYS FE software and on basis of field tests on the temperature field of the rock mass,with such influence factors as the hydrogeology conditions,the hydration heat of the concrete lining,the atmospheric temperature and the ground temperature being considered.It is concluded that it is necessary to install thermal retardation side ditches,as well as thermal retardation layers with their thickness being more than 5 cm and their thermal conductivity being smaller than 0.03 W/(m·K).

  • 【文献出处】 隧道建设 ,Tunnel Construction , 编辑部邮箱 ,2012年01期
  • 【分类号】U452.11
  • 【被引频次】18
  • 【下载频次】282
节点文献中: 

本文链接的文献网络图示:

本文的引文网络