寒区隧道结构抗防冻试验研究及仿真分析  

A Study on Frost Resistance Test of Tunnel Structure in Cold Areas and Numerical Simulation

作　　者：谢红强[1] 何川[1] 李永林[1] 

机构地区：[1]西南交通大学地下工程系,成都市610031

出　　处：《公路》2006年第2期184-188,共5页Highway

摘　　要：高寒地区修建交通隧道的主要技术难题是隧道主体结构尤其是洞口带的结构抗防冻能力、运营期间的安全性及结构的长期寿命等问题。根据鹧鸪山隧址区水文、地质条件,进行隧道主体结构及围岩温度的现场测试研究,得出了隧道区环境温度、隧道结构体和围岩的温度场变化规律,并结合结构和围岩的热力学试验,对围岩及隧道结构的温度场分布进行仿真模拟分析,分析3种不同保温材料的隔热保温性能,从而为隧道的抗防冻设计提供参考。Main technical problems for building communication tunnels in high altitude and cold areas are the frost resistance capabilities, safety during operating period and long-term life of structures, especially in the mouth of tunnels. On the basis of meteorological, hydrological and geological conditions in a certain tunnel site, in-situ tests of the temperature of main structures and surrounding rock are conducted, and the variation regularities of environment temperature and temperature field are got. According to thermodynamical tests, numerical analog simulation of temperature field distribution is carried out for surrounding rock and structures, and heat insulating properties of three different heat insulating materials are analyzed, consequently that may be for reference for frost resistance design of tunnels.

关 键 词：寒区隧道 主体结构 抗防冻 现场试验 温度场 保温材料 

分 类 号：U451.5[建筑科学—桥梁与隧道工程]