青藏铁路格拉段多年冻土区桥上无缝线路设计与检算

CWR on the design and checking calculation of the bridge in permafrost region of Qinghai-Tibet railway

在青藏铁路多年冻土区铺设无缝线路,对于减少养护维修工作量,提高旅客舒适性具有重要意义。桥上无缝线路是稳定性设计中的关键问题之一。文章对多年冻土地区无缝线路的强度和稳定性等进行检算和评估。认为在青藏铁路多年冻土区可以铺设温度应力式无缝线路。

Permafrost regions along the Qinghai-Tibet railway laying CWR, to reduce maintenance and repair, to improve the comfort of passengers is of great significance.CWR on bridge is one of the key problems in the design of stability.In this paper, the permafrost area of CWR strength and stability calculation and evaluation.In permafrost regions of the Qinghai-Tibet railway laying temperature stress of CWR.