Abstract:Research purposes: Based on the frost—heaving mechanism and influence factors on the frozen soil subgrade and according to the filling materials for the bubgrade in the section,this paper discusses whether the frost—heaving of the frozen soil subgrade can be effectively controlled or not by using the 60cm thick filling material with fine grain content less than 15%except the requirements of frost—heaving for the subgrade bottom base can be met by using the crashed—stone soil with fine grain content less than 5%.
Research conclusions:Based on the analysis of frost—heaving mechanism of the subgrade and its influence factors,and tests to the frost—heaving of filling materials Group A and Group B,the discussion is made on the frost—heaving of the fixed filling materials and it is concluded the frost—heaving of the subgrade base can be effectively controlled by using the 60cm thick crashed—stone filling material with fine grain content less than 15%.However.as the influence factors on the frost—heaving are complicated and the research results have limitations,it is necessary to do the further study on remedying and improving the frost—heaving data to make the design of antifreeze filling material and structure more reasonable for the subgrade.
刘焕强, 张敏,冯瑞玲. 客专铁路路基A、B组填料冻胀性浅析。[J]. 铁道工程学报, 2010, 27(11): 23-26.
LIU Huan—qiang,ZHANG Min,FENG Rui—ling. Analysis of Frost—heaving of Filling Materials Group A and Group B for Subgrade of Passenger Dedicated Line. 铁道工程学报, 2010, 27(11): 23-26.
Ye Yangsheng,Wang Zhongjin,Cheng Aqan,etc. Frost Heave Classification of Railway Subgrade Filling Material and the Design of Anti—freezing Layer[J]. China Railway Science,2007(1):1一6.
[2]赵云龙.铁路路基冻害及防治[M].北京:中国铁道出版 社。1984.
Zhao Yunlong.The Freeze Injury of Subgrade of Railway and Its Control[M].Beijing:China Railway Publishing House. 1984.
[3]童长江,管枫年.土的冻胀与建筑物冻害防治[M].北 京:中国水利电力出版社,1985.
Tong Changjiang,Gnan Fengnian.Frost Heave of Soil and Control of Freeze Injury of Buildings[M].Bering: China Water Power Press,1985.
[4] 叶阳升,周镜.铁路路基结构设计的探讨[J].铁道工程 学报,2005(1):39—46.
Ye Yangsheng,Zhou Jing.Exploration on Strum Design of Railway Subgrade[J].Journal of Railway Engineering Society,2005(1):39—46.
Bureau of Science and Education,Ministry of Railways, The Information Research Institute of Railway Science and Technology,China North—West Academy of Railway Sciences.Foreign Scientific and Technologic Information of Frost Soil of Railway[M].BeiJing: Bureau of Science and Education,Ministry of Railways, 2001.
[6]TB 10035--2006,铁路特殊路基设计规范[S].
TB 10035--2006,Railway Special Roadbed Design Criteria[S].
[7] 吴敬民,汪双杰,章金钊.多年冻土地区公路工程[M]. 北京:人民交通出版社。2005.
Wu Jingmin, Wang Shnangjie, Zhang Jinzhao. Engineering of Highway in Permafrost Region[M]. Beijing:China Communications Press. 2005.
[8] SL 211-98. 水工建筑物抗冰冻设计规范[S].
SL 211-98.Hydraulic Building Anti—freeze Design Criteria[S].
[9] 叶阳升.论铁路路基填料分类[J].中国铁道科学,2004 (2):35—41.
Ye Yangsheng.Railway Filling Material Classification [J].China Railway Science,2004(2):35—41.
[10]JGJ 118q8,冻土地区建筑地基基础设计规范[s].
JGJ 118—98.Permafrost Region Building Foundation Design Criteria[S].