基于FLAC 3D的季冻区隧道温度场分布规律数值模拟分析

Numerical Simulation Analysis of Distribution Rule of Tunnel Temperature Field in Seasonal Frozen Region Based on FLAC 3D

在温度循环作用下,容易引起季冻区隧道渗漏等病害。采用三维快速拉格朗日分析程序(FLAC 3D),以通化至沈阳高速公路赤柏松隧道为数值模拟对象,对隧道在季冻区温度多年冻融循环下的温度场分布规律进行分析,为季冻区隧道的保温结构设计提供理论和数据支持。

Diseases like leakage are easily caused in tunnel of seasonal frozen region under the cycle effect of temperature. Taking Chibosong Tunnel of Tonghua - Shenyang Expressway as the numerical simulation object, Three Dimensional Fast Lagrangian Analysis of Continua （FLAC 3D） is adopted to analyze the distribution rule of temperature field of tunnel under freeze - thaw cycle in seasonal frozen region of many years, providing theoretical and data support for thermal insulation structure design of tunnel in seasonal frozen region.