摘要
系统分析了隧道内外轨温变化特点以及隧道内外无缝线路的受力特点,根据试验观测资料确定了隧道洞口无缝线路设计的有关参数,推导了隧道洞口无缝线路钢轨伸缩位移和钢轨附加力的计算公式,提出隧道洞口的无缝线路设计计算方法并附有算例。
The features of temperature variations of rails and compression stresses on continuous welded tracks inside and outside the tunnel are analyzed systematically. Parameters for design of continuous welded tracks at tunnel openings are determined according to the test and observation data. Calculation formulae for rail expansion creeping and rail secondary forces are deduced. The calculation method for designing the continuous welded tracks at tunnel openings is put forward.
出处
《铁道建筑技术》
2006年第1期9-11,共3页
Railway Construction Technology
关键词
无缝线路
隧道洞口过渡段
参数计算
continuous welded track
transition section at tunnel opening
calculation of parameters
