多年冻土区路桥过渡段一种新结构的试验观测与分析  

Observation and Analysis of a New Type Embankment-BridgeTransition Section in Permafrost Regions

作　　者：刘建坤[1] 鲍维猛[1] 韩小刚[1] 包黎明[2] 

机构地区：[1]北方交通大学土木建筑学院,北京100044 [2]铁道第一勘察设计院,甘肃兰州730000

出　　处：《冰川冻土》2004年第6期800-805,共6页Journal of Glaciology and Geocryology

基　　金：铁道部科技开发计划项目(2001G001 8 06 01);国家自然科学基金项目(40171018;90102006)资助

摘　　要：基于保护多年冻土的原则,通过对一般地区过渡段设置方法的改进,得到了一种用于青藏铁路清水河地区的新型式路桥过渡段的设置方法.通过对过渡段的沉降和热状况的现场监测,分析了过渡段沉降变形和热状况的变化规律,并对采用的设置方法所产生的实际效果进行了评价.A new special structure of embankment-bridge transition section in permafrost regions is presented by modifying the structure of the transition section applicable to ecumenical regions, based on the observations of settlement and thermal state of a modified embankment-bridge transition section in Qingshuihe of the Qinghai-Tibet railway. The principle of permafrost protection is kept. The features of settlement and thermal state are analyzed, and the embankment-abutment transition method in permafrost regions, recommended in this paper, is evaluated.

关 键 词：路桥过渡段 多年冻土 沉降变形 热状况 

分 类 号：U213.14[交通运输工程—道路与铁道工程]