干寒地区路基长期稳定性及工程措施效果研究

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (1000 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要研究目的：由于目前对干寒地区路基长期稳定性研究还不能完全满足工程实际的需要,为此本文对干寒地区已修建的各种低路堤路基结构的短期及中长期可靠性和冻土环境的稳定性作出预测，进而对运营期间的路基维护和可能发生病害的治理提供理论支撑。
研究结论：1)为保证路基的长期稳定性,需要主动采取措施保护冻土，热管就是其中一种较好的措施；
(2) 在对冻土进行保护的过程中，热管的降温作用明显，热管路基可以抵消气候变暧对路基造成的不良影响；
(3) 路基本身对冻土的保温作用也很显著,路基越高对冻土的保温效果越好,路基越低对冻土的保温效果越差;（4)当路基高度低于某个极限时，不但不能对冻土起到保温作用，反而会使路基下冻土温度升高；（5)该研究成果可为我国在干寒地区修建各种路基结构的设计提供参考依据。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	孙文
	吴亚平
	高遵明

关键词 ：干寒地区, 路基, 长期稳定性, 工程措施, 保温

Abstract：Research purposes ： Theory of problem study of the long - term stability of subgrade in cold region still can not fully meet the needs of practical engineering. The low embankment structure of short， medium and long term reliability and permafrost environment stability in cold area was predicted， and it provides the theoretical support for subgrade maintenance and possible disease management during the operation.
Research conclusions: (1) In order to ensure the long - term stability of the subgrade，it is necessary to take measures to protect the frozen soil. The heat pipe is a good measure. (2) In the process of protecting the frozen soil，the cooling effect of the heat pipe is obvious，and the heat pipe subgrade can counteract the adverse effect caused by the climate warming to the subgrade. (3) The heat preservation effect of the subgrade is also significant，the higher the subgrade the better the insulation effect of frozen soil，the lower the effect of the insulation of the frozen soil is worse. (4) When the subgrade height is lower than some limit，it can not only play the role in insulation of the frozen soil，but will make the temperature of frozen earth temperature rise. (5) The research results can provide references for the design and renewal of various subgrade structures in the cold regions of China.

Key words： cold region subgrade long - term stability engineering measures insulation effect

收稿日期: 2015-06-08

作者简介: 孙文，1976年出生，男，副教授。

引用本文:

孙文,吴亚平,高遵明. 干寒地区路基长期稳定性及工程措施效果研究[J]. 铁道工程学报, 2015, 32(9): 35-40.
SUN Wen，WU Ya - ping，GAO Zun - ming. Research on the Long - term Stability of Subgrade in Cold Region and Its Effect. Journal of Railway Engineering Society, 2015, 32(9): 35-40.

链接本文:

https://tdgcxb.crec.cn/CN/ 或 https://tdgcxb.crec.cn/CN/Y2015/V32/I9/35

	：41 -47.
[7]	程国栋.用冷却地基的方法修建青藏铁路[].中国铁道科学，2003(3) ：1 -4.
	Cold Regions Engineering(SCI) ,2003(4) ：171 -181.
[4]	刘奉喜，刘建坤，郭大华，等.多年冻土区热管冷却路基数值分析[J].土木工程学报，2004(9)41 -47.
[5]	孙增奎，王连俊，白明洲，等.青藏铁路多年冻土路堤温度场的有限元分析[J].岩石力学与工程学报，2004 (20) :3454 -3459.
[8]	孙文，吴亚平，郭春香，等.热棒对多年冻土路基稳定性的影响[J].中国公路学报，2009(5)15 -20.
[2]	刘志强,赖远明，张淑娟，等.青藏铁路通风路基三维温度场的数值分析[J]. 土木工程学报,2006 (1)70 - 74.
	Liu Fengxi，Liu Jiankun，Guo Dahua，etc. Numerical Analysis of Thermosyphon in Protecting the Roadbed in Permafrost[ J]. China Civil Engineering Journal，2004
[3]	孙文,吴亚平,蔺鹏臻，等.次生不良冻土对路基稳定性影响的数值分析[J].铁道工程学报，2013(11)7-12.
	Sun Wen，Wu Yaping，Lin Pengzhen，etc. A Numerical Analysis on the Influences of the Secondary Harmful Frozen Soil on the Subgrade Stability along the Qinghai - Tibet Railway [ J ]. Journal of Railway Engineering Society,2013(11) ：7-12.
[2]	Lai Yuanming，Li Jianjun，Niu Fujun，etc. Nonlinear Thermal Analysis of Qing - Tibet Railway Embankments in Cold Regions [ J ]. ASCE Journal of
	Zhou Youwu， Guo Dongxin， Qiu Guoqing， etc. Geocryology in China [ M ]. Beijing ： Science Press， 2000.
	Liu Zhiqiang，Lai Yuanming，Zhang Shujnan， etc. Numerical Analysis for the Ventilated Embankment in Qing - Tibet Railway [ J ]. China Civil Engineering Journal,2006(1) ：70-74.
[1]	周幼吾,郭东信,邱国庆，等.中国冻土[M].北京:科学出版社,2000.
	Sun Zengkui，Wang Lianjun，Bai Mingzhou，etc. Finit Element Analysis of Temperature Field of Qinghai - Tibet Railway Embankment on Permafrost[ J]. Chinese Journal of Rock Mechanics and Engineering， 2004 (20) ：3454 -3459.
[6]	Lai Yuanming，Zhang Luxin，Zhang Shujuan. Cooling Effect of Ripped - stone Embankments on Qing - Tibet Railway under Climatic Warming[ J]. Chinese Science Bulletin (SCI) ,2003(3) ：598 -604.
	Cheng Guodong. Construction of Qinghai - Tibet Railway with Cooled Roadbed [ J ] . China Railway Science，2003(3) ：1 -4.
	Sun Wen，Wu Yaping，Guo Chunxiang,etc. Influences of Two - phase Closed Thermosyphon on Permafrost Roadbed Stability [ J ]. China Journal of Highway and Transport，2009 ⑵）：15 -20.
[9]	Briggs D E，Yong E H. Convection Heat Transfer and Pressure Drop of Air Flowing Across Triangular Pitch Banks of Finnedtubes，AIChE Preprint，No. 1. ASME - AIChE National Heat Transfer Conf. HoustonTenes. 1962.8.