摘要
为研究寒区隧道地基冻融变形情况,考虑水冰相变、水化热的作用,建立了隧道地基热-应力耦合计算有限元模型,以某寒区隧道的洞口段为计算对象进行了计算,研究结果表明,现有的寒区隧道保温技术在实际应用中对于冻土的保护不足,水分和隧道洞内的高低温变化是导致这一问题的主要原因。
To analyze foundation deformation distribution of road tunnel in cold regions, a multi - field finite element model is established considering ice and water phase transition as well as hydrate heat. Through a detail calculation example with the section of a road tunnel in cold regions, the research result indicates that water content of ground and high air temperature in the tun-nel are main reason causing the frost - heaving and thawing - set-tlement deformation.
出处
《四川建材》
2017年第3期74-76,共3页
Sichuan Building Materials
关键词
隧道工程
多场耦合模型
地基变形
冻胀融沉
tunnel engineering
multi -field coupling model
foundation deformation
frost - heaving and thawing - settlement
