多年冻土地区热管冷却路基数值分析  

NUMERICAL ANALYSIS OF THERMOSYPHON IN PROTECTING THE ROADBED IN PERMAFROST

作　　者：刘奉喜[1] 刘建坤[2] 郭大华[1] 张鲁新[2] 

机构地区：[1]中交公路规划设计院 [2]北京交通大学土木建筑工程学院

出　　处：《土木工程学报》2004年第9期41-47,共7页China Civil Engineering Journal

基　　金：国家自然科学基金资助 (No 40 1 71 0 1 8)

摘　　要：热管是一种利用液汽相的转换对流循环来实现热量传输的系统 ,是无源冷却系统中热量传输效率最高的装置 ;本文对采用热管冷却路基的方法进行数值模拟分析 ,对布设不同间距热管对路基冻土上限的影响进行了分析 ,得到了热管对冻土路基温度场影响的一般规律 ,并对确定热管布设间距的基本方法提出了建议。A thermosyphon is a heat transfer system based on the conversion and convection of vapor and liquid phases,that provide highest heat transmission efficiency. In this paper, the cooling effect of a two-phase thermosyphon system in protect ing the roadbed in permafrost region is analyzed numerically, and the influence of thermosyphon spacing on permafrost table is studied. The general pattern of i nfluence of thermosyphon on roadbed temperature regime is obtained and several p ractical recommendations are proposed for the determination of thermosyphon spac ing.

关 键 词：冻土 路基 热管 温度场 

分 类 号：U419.92[交通运输工程—道路与铁道工程]