青藏铁路多年冻土区桥头路基病害成因分析及整治措施研究_周有禄.pdfVIP

网络出版时间：2013-09-18 11:14 网络出版地址：/kcms/detail/11.2987.U1114.010.html ·线路/ 路基 · 青藏铁路多年冻土区桥头路基病害成因 分析及整治措施研究 1 2 1 1 周有禄 , 熊治文 , 李天宝 , 王起才 (1郾 兰州交通大学土木工程学院,兰州摇 730070;2郾 中铁西北科学研究院有限公司,兰州摇 730000) 摘摇 要:针对青藏铁路运营以来多年冻土区出现的路基病害的类型划分、形成原因及主控因素进行分析研究,提出 青藏铁路多年冻土区桥头路基存在的病害问题、主要影响因素及桥头路基病害治理工程措施,并对多年冻土区路 基工程热稳定性变化趋势进行预测。 关键词:青藏铁路; 多年冻土; 路基病害; 稳定性; 整治措施 + 中图分类号:U213郾1 4摇 摇 文献标识码:A摇 摇 文章编号:1004 2954(2013)10 0040 04 Reason Analysis and Treatment Measures of Subgrade Defects at Bridgehead in Permafrost Regions along Qinghai鄄Tibet Railway 1 2 1 1 ZHOU You鄄lu ,XIONGZhi鄄wen ,LI Tian鄄bao ,WANG Qi鄄cai (1.School of Civil Engineering,Lanzhou Jiaotong University,Lanzhou730070,China; 2.Northwest Research Institute Co. ,Ltd. ,of C. R. E. C. ,Lanzhou730000,China) Abstract:Focusingonthe subgradedefectsinthepermafrostregion sincethe Qinghai鄄Tibet Railway had been put into operation,the thesis analyzed and researched the classification,the reasons and the main control factorsaboutthesesubgradedefects. Andthen,afteranalyzingthemaininfluencefactorsonthese subgrade defectswhich occurred at the bridgehead in the permafrost region along Qinghai鄄Tibet Railway, the thesis put forward the engineering measuresfor the treatment of these defects. In addition,aforecast for the variation tendency of thermal stability of subgrade engineering in the permafrost regions was carried out. Key words:Qinghai鄄Tibet Railway;permafrost;subgrade defects;stability;treatment measures 摇 摇 青藏铁路建设充分吸取东北多年冻土铁路和青藏 1摇 多年冻土区桥头路基病害及路基病