季节性冻土地区高速铁路路基保温技术试验研究

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英文篇名：Experimental Study on Thermal Insulation Technique to Prevent Subgrade Frost-heaving for High Speed Railway in Seasonal Frozen Soil Region 作者：闫宏业 英文作者：YAN Hongye;Railway Engineering Research Institute,China Academy of Railway Sciences Group Co.Ltd.; 关键词：高速铁路 ; 季节性冻土地区 ; 现场试验 ; 基床保温结构 ; 冻胀 ; 冻结深度 英文关键词：High speed railway;;Seasonal frozen soil region;;Field test;;Thermal insulation subgrade structure;;Frost-heaving;;Freezing depth 中文刊名：TDJZ 英文刊名：Railway Engineering 机构：中国铁道科学研究院集团有限公司铁道建筑研究所; 出版日期：2019-02-20 出版单位：铁道建筑 年：2019 期：v.59;No.540 基金：中国铁路总公司科技研究开发计划(2016G003-J,2016G003-F);; 中国铁道科学研究院基金(2016YJ023) 语种：中文; 页：TDJZ201902001 页数：4 CN：02 ISSN：11-2027/U 分类号：6-9

摘要

合理的防冻胀基床结构是季节性冻土地区高速铁路防冻胀的关键。本文通过开展哈大高速铁路正线与线外现场足尺试验,对局部保温措施与全断面保温措施的有效性进行了研究。试验结果表明:路肩和线间局部保温措施只能减小保温部位的冻结深度和冻胀,不能抑制轨道结构处的冻胀,不适用于季节性冻土地区高速铁路防冻胀设计;全断面保温措施能够降低轨道结构处的冻结深度和冻胀,有较好的防冻胀效果,季节性冻土地区高速铁路路基可采用全断面保温基床结构进行防冻胀设计。
        The reasonable frost-heaving prevention structure is the core part of subgrade design for the high speed railway in seasonal frozen soil region. The paper studied on the validity of partial and overall thermal insulation methods by full scale field tests which were carried out on and outside the operating line separately.The experimental results showthat the partial thermal insulation method,in which the thermal insulation boards are put on the shoulder and the center of the line,can just protect the parts with the thermal insulation boards,but the frost-heaving at the track structure can not be restrained. Partial thermal insulation method is not workable for the frost-heaving prevention design of high speed railway in seasonal frozen soil region.But the overall thermal insulation method can reduce the freezing depth and frost-heaving at the track structure,has better frost-heaving prevention effect than the partial thermal insulation method,and is workable to prevent subgrade frost-heaving for high speed railway in seasonal frozen soil region.

引文

[1]叶阳升,张千里,蔡德钩,等.寒区铁路路基防冻胀结构及设计参数研究[R].北京:中国铁道科学研究院,2011.
    [2]王仲锦,叶阳升,闫宏业,等.寒区铁路路基防冻胀设计中冻深计算方法的探讨[J].铁道建筑,2013,53(2):57-59.
    [3]刘伟平.哈大高铁运营长期连续观测技术及冻胀整治技术研究[R].沈阳:哈大铁路客运专线有限责任公司,2014.
    [4]叶阳升,王仲锦,程爱君.路基的填料冻胀分类及防冻层设置[J].中国铁道科学,2007,28(1):1-7.
    [5]CAI D G,YAO J P,YAN H Y,et al. Investigation of Frost Heave Prevention Using Permeable Subgrade Structure[J].Sciences in Cold and Arid Regions,2015,7(5):611-618.
    [6]国家铁路局.高速铁路设计规范:TB 10621—2014[S].北京:中国铁道出版社,2015.
    [7]中华人民共和国铁道部.铁路特殊路基设计规范:TB 10035—2006[S].北京:中国铁道出版社,2007.
    [8]闫宏业,蔡德钩,张千里,等.铁路路基冻害防治保温技术研究[J].铁道建筑,2015,55(1):51-55.
    [9]吕高峰,杨永平,魏庆朝,等.利用热管-保温板复合结构提高冻土区路基稳定性研究[J].铁道学报,2007,29(6):118-122.
    [10]盛煜,温智,马巍.青藏铁路北麓河试验段路基保温材料处理措施初步分析[J].岩石力学与工程学报,2003,22(增2):2659-2663.
    [11]SU G Q,CAO W H.Construction Technology of Heat-insulated Slab Subgrade at Permafrost Zone[J]. Railway Construction Technology,2003(S1):6-9.
    [12]苏谦,王迅,刘深.青藏铁路新型路基保温材料应用试验研究[J].西南交通大学学报,2007,42(4):395-399.
    [13]王曼,刘建军.道路工程中XPS保温板防冻胀厚度的研究[J].石河子大学学报(自然科学版),2014,32(1):123-127.
    [14]温智,盛煜,马巍,等.保温法在青藏铁路路基工程中应用的适用性评价[J].冰川冻土,2005(5):694-700.
    [15]辛强.XPS保温板处治岛状冻土路基技术研究[D].西安:长安大学,2012.