冻土通风管路基的温度场分析与设计原则探讨  

APPROACH ON TEMPERATURE FIELD ANALYSIS AND DESIGN PRINCIPLE OF BED FOR VENTILATING PIPELINE IN FROZEN SOIL

作　　者：李宁 [1] 苏波  全晓娟 [2] 李国玉 [2] 

机构地区：中科院寒区旱区环境与工程研究所冻土工程国家重点实验室 西安理工大学岩土所[1] 中科院寒区旱区环境与工程研究所冻土工程国家重点实验室[2]

出　　处：《土木工程学报》2005年第2期81-86,共6页China Civil Engineering Journal

基　　金：中国科学院知识创新工程重大项目 (No KZCX1 SW 0 4 )资助

摘　　要：通风管冷却系统是一种普遍应用的防止冻土退化的工程处理措施。针对青藏铁路高温冻土路段通风管设计与施工中的基本问题 ,通过系统数值仿真试验结果 ,考虑了通风管管间距 ,通风管管径以及通风管埋设高度等因素对冻土路基温度场的影响 ,分析了通风路基在各种因素影响下的冷却效果 ,再考虑到通风管的变形与强度以及冻土路基的稳定性要求 。Ventilating pipeline system is a treatment measurement used widely for anti-degradation of frozen soil.For the basic problem in design and practice of ventilating pipeline in section of high way for Qinghai-Tibetan railway with higher temperature frozen soil zone,by results of systematical simulation test,influence of factors such as space between pipes and diameter as well as embedded depth of ventilating pipe on temperature field of bed in frozen soil was considered,deformation and strength of ventilating pipe and stability of frozen soil bed as well,then the cooling effect on ventilated bed affected by that factors was analyzed,the design principle of ventilating pipeline bed was proposed.

关 键 词：冻土 通风管 温度场 数值仿真试验 设计原则 

分 类 号：U213.14[交通运输工程—道路与铁道工程]