This paper assumes that the welded turnout in the continuously welded rail track is a structural system, and the railway tie in the welded turnout is a beam on the continuously elastic foundation.
本文假定跨区间无缝线路中的无缝道岔为一结构体系，岔枕为连续弹性基础上的有限长梁。
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Aiming at vibration analysis of seamless turnout on bridge, the rail-turnout-tie-bridge spring-damping vibration model was built by using finite element method.