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京沈客专辽宁段完成轨道板铺设

2017-08-13 08:07:58   中国青年网

图为工人向最后一块轨道板灌注自密实混凝土。 □崔世平 摄

本报讯8月12日,在凌源市境内的同盛隧道施工现场,最后一块轨道板自密实混凝土灌注完成,结束了京沈客专辽宁段无砟轨道板铺设的全部任务,为辽宁段下一步全线铺设钢轨奠定了基础。

据中铁十二局介绍,京沈客专采用的CRTSⅢ型无砟轨道,是我国唯一具有完全自主知识产权的板式无砟轨道,这种轨道板具有耐久性好、稳定性高、维护便捷等特点。该型无砟轨道之前在盘锦至营口、沈阳至丹东客运专线得到应用,但在超过500公里长度的高铁线路上应用尚属首次。

自去年4月开始铺设以来,建设者们严格按标准和程序施工,保证了轨道板铺设质量。中铁十二局相关负责人表示,精密施工是完成铺设轨道板任务的首要条件。精密的施工工艺不仅让混凝土充填密实、饱满、强度高,更确保了列车高速运行时的行车安全。

据了解,京沈客专辽宁段自2014年7月开工建设,预计在2018年底具备开通条件。京沈客专全长698公里,设计时速350公里,是东北地区入关的第一条高速铁路通道。建成后,北京至沈阳间的运行时间将压缩至2小时30分。□崔世平 本报记者/韩永刚

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