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跨区间无缝线路不但是开行重载、高速列车的基础，也是轨道结构改善和加强的重要措施。无缝道岔是跨区间无缝线路上的关键点。以下着重介绍了在轨温差大于 90℃的寒冷地区铺设无缝道岔的整个过程，提供了设计和施工的具体数据，并提出了在寒冷地区铺设无缝道岔的若干建议。
Inter-area seamless lines are not only the basis for the opening of heavy-duty and high-speed trains, but also an important measure to improve or enhance the orbital structure. Seamless turnout is the key point across the seamless line. The following is an overview of the entire process of laying a seamless turnout in a cold area where the temperature difference is greater than 90 ° C, providing specific data for design and construction, and several suggestions for laying a seamless turnout in cold regions.