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京沈高铁辽宁段最后一块轨道板昨铺完 明年有望开通 沈阳到朝阳只需要1小时

2017-08-13 06:46:57   中国青年网

河北

辽宁

北京

平谷

兴隆

承德

平泉

凌源

锦州

朝阳

北票

阜新

新民

沈阳

设计时速 350公里

全程运行时间2.5个小时

全长698公里

辽宁段预计2018年底具备开通条件

8月12日上午,在朝阳凌源的同盛隧道工地上,中铁十二局灌注完成了最后一块轨道板的自密实混凝土。至此,京沈高铁辽宁段无砟轨道板铺设全部完成。京沈高铁作为我国“四纵四横”高速铁路网的收官之作,连通了东北地区与全国高铁网,建设中采用了我国自主知识产权的CRTSⅢ型先张板式无砟轨道板。据了解, 预计明年底,京沈高铁辽宁段具备开通条件。

水泥轨道板里面带芯片

京沈高铁采用了具有我国自主知识产权的CRTSⅢ型先张板式无砟轨道板,这种轨道板耐久性好、稳定性高、维护便捷,而且内嵌电子芯片,使用扫码器就可随时查询到轨道板的相关信息。

据了解,轨道板中的芯片浇铸到混凝土中,从浇铸、养护、存放到铺设,每一个环节都可以读取它的工作状态。有了电子芯片,每一块轨道都相当于有了“身份证”,用读板器一刷,型号、铺设序号、里程、曲线半径等信息都会显示出来。一旦出现任何问题,都可在网络上立即显示出来,并具体到对应的轨道板上,实现了追本溯源。

这是此类轨道板首次在国内在500公里以上长距离高铁线路上铺设使用,也是首次在寒冷地区全面推广应用。

另外,在安装轨道板的施工中,首先进行底座施工,待混凝土强度达到75%以后,铺设土工布隔离层、弹性缓冲层,安装轨道板,经过高精度测量,采用精调器、压杠等小型工装在高度和平面进行精确定位,最后进行填充层的自密实混凝土灌注。这种不需要振捣自动密实的混凝土,不仅能够确保混凝土充填密实、饱满,而且强度高,能够保证高速运行的列车安全。

京沈高铁开通后 沈阳至北京高铁仅用2.5个小时

京沈高铁是我国“四纵四横”铁路网的收官之作, 起自北京星火站,经河北省承德市、辽宁省朝阳市、锦州市、阜新市,接入铁路枢纽沈阳站,全长698公里,设计时速350公里,是东北地区入关的第一条高铁通道。京沈客专辽宁段2014年7月1日开工建设,预计2018年底具备开通条件。

从东北铁路网看,东北铁路网的哈齐、哈佳、哈牡、长白、长吉珲、沈丹、丹大、哈大共八条客专通过沈阳枢纽和京沈高铁相接,并通过京沈客专东北高铁融入全国高速铁路网;从京沈客专的北线看,有六条连接线和它相接,可见京沈客专的骨干作用。

京沈高铁辽宁段通车后,预计沈阳至阜新、朝阳的运行时间将分别为40分钟、60分钟。如果全线通车,沈阳至北京的运行时间将缩短至2.5小时左右,比目前最快的京沈动车组的5个小时节省了一半的时间。

沈阳晚报、沈报融媒记者 李庆海

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