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隧道建设(中英文) ›› 2012, Vol. 32 ›› Issue (1): 57-60.DOI: 10.3973/j.issn.1672-741X.2012.01.011

• 研究与探索 • 上一篇    下一篇

季节性冻土区隧道温度场分析与预测

杨旭1,2,严松宏2,马丽娜2   

  1. (1. 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 730070; 2. 兰州交通大学土木工程学院, 兰州 730070)
  • 收稿日期:2011-07-22 修回日期:2011-11-17 出版日期:2012-02-20 发布日期:2012-03-09
  • 作者简介:杨旭(1986—),男,陕西宝鸡人,兰州交通大学土木工程学院桥梁与隧道专业在读硕士,从事隧道与地下工程方面的研究工作。

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

YANG Xu1,2, YAN Songhong2, MA Lina2   

  1. (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)
  • Received:2011-07-22 Revised:2011-11-17 Online:2012-02-20 Published:2012-03-09

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≥5cm、导热系数≤0.03W/(m•K)的保温层是必要和合理的。

关键词: 季节性冻土区, 隧道, 现场测试, 温度场

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).

Key words: seasonal frozen area, tunnel, field test, temperature field