浅覆土地铁出入口冻结数值模拟分析  

Freezing Numerical Simulation and Analysis of Shallow Covered Subway Entrance and Exit

作　　者：许舒荣 XU Shu-rong(Beijing China Coal Mining Engineering Co.,Ltd.,Beijing 100013,China)

机构地区：[1]北京中煤矿山工程有限公司,北京100013

出　　处：《价值工程》2022年第18期108-110,共3页Value Engineering

基　　金：北京中煤重点课题(KJZH-2021-ZD-05)。

摘　　要：为研究浅覆土条件下地铁出入口冻结温度场发展规律,以上海轨道交通18号线某出入口冻结工程为背景,采用大型有限元软件ANSYS,建立了三维数值计算模型,计算过程中考虑了相变潜热,得出了浅覆土地铁出入口冻结温度场发展规律;并研究了不同初始地温条件下冻结温度场发展规律。研究结果为类似施工提供参考。In order to study the development law of freezing temperature field at the entrance and exit of subway under the condition of shallow soil,taking a freezing project at the entrance and exit of Shanghai rail transit line 18 as the background,a three-dimensional numerical calculation model is established by using the large-scale finite element software ANSYS.The phase change latent heat is considered in the calculation process,and the development law of freezing temperature field at the entrance and exit of subway in shallow soil is obtained;The development law of freezing temperature field under different initial ground temperature conditions is studied.The research results provide reference for similar construction.

关 键 词：浅覆土 地铁 冻结温度场 数值分析 

分 类 号：U231.4[交通运输工程—道路与铁道工程]