温度跨度是影响桥上无缝线路的主要因素之一。
Temperature span is one of the main factors to affect the jointless track on bridge.
桥上无缝线路梁轨相互作用是轨道工程的关键技术。
The interrelated action principle of beam and rail of continuously welded rails on bridge is the pivotal technique of track engineering.
研究目的：解决小半径曲线地段桥上无缝线路设计的难题。
Research purposes: To solve the problems on designing continuous welded rail on bridge in the small radius curve section.
桥上无缝线路的纵向力，由于梁轨相互作用，将通过桥跨结构传递到桥梁的墩台上。
Due to the interaction between railway Bridges and CWR, the longitudinal forces of CWR are passed to the piers through the structure of the bridge.
用广义变分法来计算桥上无缝线路附加力，提出了研究桥上无缝线路附加力计算的新方法。
The author applies generalized variational methods to calculate the additional expansion and contraction forces of CWR on bridge.
然后对两种类型的变量阻力进行分析，并提出了当桥梁处于无缝线路固定区和桥上存在伸缩区的情况下采用线性变量阻力的计算方法。
Both linear and nonlinear track resistances are then discussed. Methods of computation with linear variable resistance are presented for the static zone and the breathing zone situated on the bridge.
然后对两种类型的变量阻力进行分析，并提出了当桥梁处于无缝线路固定区和桥上存在伸缩区的情况下采用线性变量阻力的计算方法。
Both linear and nonlinear track resistances are then discussed. Methods of computation with linear variable resistance are presented for the static zone and the breathing zone situated on the bridge.
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