岔枕是用在铁路道岔上的专用轨枕。主要用于道岔牵引点处，可将道岔电务转换杆件置于枕内，有利于大机养护作业。
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。
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.
针对桥上无缝道岔，运用有限单元法，建立了钢轨-岔枕-桥梁弹簧-阻尼空间振动模型。
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.
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