发卡式热棒—隔热层复合路基在多年冻土区应用研究  

Research on Application of Hairpin-shaped Thermosyphon and Thermal Insulation Composite Embankment in Permafrost Regions

作　　者：樊凯[1] 俞祁浩[1] 袁堃[1] 屈强[2] 

机构地区：[1]中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室,甘肃兰州730000 [2]中交第一公路勘察设计研究院有限公司,陕西西安710075

出　　处：《施工技术》2012年第9期53-57,62,共6页Construction Technology

基　　金：西藏自治区交通科技项目:青藏公路改建完善工程路基路面稳定保障技术研究(2007-001)

摘　　要：基于已有单一路基调控措施作用效果分析,提出发卡式热棒—隔热层复合路基调控工程措施,对复合调控措施作用机理、发卡式热棒结构设计、复合调控措施路基结构设计等进行了探讨,介绍了复合调控工程措施实体试验工程监测方案、施工过程及施工质量控制要点。观测数据表明,复合路基调控工程措施能使隔热层有较大热阻,减少路基体暖季吸热,热棒冷季能主动对流换热冷却路基的各自积极因素进行综合利用,在降低路基温度场方面效果明显,起到全年减少路基体吸热的积极作用,有利于保持多年冻土路基稳定。Based on the effectiveness analysis of existing single control measures,a composite control measures with hairpin-shaped thermosyphon and thermal insulation was proposed.The mechanism of composite control measures,structural design of the hairpin-shaped thermosyphon and the composite measures embankment were studied and presented.The engineering monitoring program for the physical test of the composite control engineering measures,the construction process and key points of construction quality control were introduced.Observation data shows that the insulation layer reduces the heat observed by the embankment in warm season due to its high thermal resistance and the hairpin-shaped thermosyphon can cool the embankment with initiative convection.With proper combination of these two factors,the embankment temperature can be effectively reduced during the whole year,which helps to maintain the stability of permafrost embankment.

关 键 词：公路工程 路基 试验 发卡式热棒 多年冻土 

分 类 号：TU352.1[建筑科学—结构工程] U416.168[交通运输工程—道路与铁道工程]