帮助 本站公告
您现在所在的位置:网站首页 > 知识中心 > 文献详情
文献详细Journal detailed

无动力热棒冷却冻土路基研究
Research on Frozen Soil Subgrade Cooling by Non-power Heat Pipe

作  者: ; ; ; ;

机构地区: 东南大学交通学院

出  处: 《公路交通科技》 2005年第3期1-4,20,共5页

摘  要: 基于热棒工作原理及已有的研究成果,依托青藏公路整治改建工程实施大规模热棒试验工程。介绍青藏公路多年冻土区公路路基热棒试验情况,通过现场设置观测装置观测地温变化,分析研究热棒的工作状态、冷却路基效果及对冻土热稳定性的影响。1年观测结果表明,进入大气负温期后,热棒开始工作,路基及基底土体冷储量显著增加,且总增加量随冻结期增长;热棒影响范围内,距离热棒越远,冷量增长期越滞后且增幅越小,符合一般规律;路基工程中使用热棒保护冻土和改善路基热稳定性是有效的。 Based on the work principle of heat pipe and it's research result,this paper describes the test conditions of heat pipe used for permafrost subgrade of Qinghai-Tibet highway.A large scale of heat pipe testing was made into practice in the project of the treatment and reconstruction of Qinghai-Tibet highway,according to the various earth temperature data from the site observation unit,the work conditions of heat pipe,it's effect and the influence on the stabilization of the frozen soil were analyzed.The first year observation result shows that once the atmosphere temperature is below temperature of frozen soil,the heat pipe would work and the contained cool of the subgrade and the foundation soil body increase obviously.The total cool will increase with growth of the frozen period.In the influencing range of the heat pipe,it is the general principle that the longer distance from the heat pipe,the later the cool increasing and the less the cool contained.The research result indicates that the heat pipe can be used effectively in the subgrade construction to protect the frozen soil and improve the heat stabilization of subgade.

关 键 词: 无动力热棒 多年冻土 公路路基 热稳定性

领  域: [交通运输工程]

相关作者

相关机构对象

相关领域作者

作者 张滨
作者 王丽娟
作者 罗谷松
作者 吴敏
作者 周晓津