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逆天!中国的大桥竟然会空中旋转...看得不敢闭上眼

2017-10-12 14:28:53   重庆晨报

官厅水库特大桥是中铁大桥局承建京张高铁上另一个重点控制性工程,大桥全长9.08公里,主桥采用8孔,110米简制拱形钢桁梁,犹如8个造型优美的彩虹与碧波相应,成为官厅湖上一道亮丽风景,主桥钢梁每孔重达1865吨,工程采用顶推法施工,目前大桥已经完成7孔,官厅水库特大桥预计今年10月底前,8孔钢梁将全部铺设完成。

在京张高铁主线紧张施工的同时,奥运支线建设也进入到攻坚阶段,由于崇礼区太子城奥运村地理位置特殊性,赵川高架特大桥设计坡度大,国内铁路设计坡度一般都为1%至2%坡度,3%这个坡度是国内高铁乃至世界高铁设计坡度先例,中铁二十局技术人员对运梁机进行了技术改造,将运梁机发动机功率进行了倍速增大,同时对提梁、架梁设备也进行了各个部件功率增大措施,攻克了箱梁架设难题。

中铁二十局京张高铁崇礼支线宣化制梁场场长姜浩:到目前为止,我们的全线的桥墩建设已经全面完成,我们预制梁这块是从4月中旬预制的第一孔,截止到目前我们已经打了140孔桥,现在正在紧锣密鼓的进行箱梁架设作业,我们从7月17号开始首架,到目前为止架设了58孔。按照施工组织设计来看,我们应该是明年的10月31号能够顺利完成。

京张高铁,于2016年3月29日正式开工,计划于2019年建成通车,它的建成将使北京到张家口的铁路旅行时间缩短到50分钟,将为2022年北京冬奥会的成功举办,提供重要的交通保障。

中车拿下美国13亿美元地铁车辆订单全年订单超过80亿美元

京张高铁的建设要通过12公里有断层破碎带、崩塌落石及泥石流等隧道区域,复杂的地质,让人望而却步。京张高铁的建设者们就是在这样困难重重中,用智慧和汗水攻克了一道道技术难关,破解了一道道建设难题,不断加速着我国高铁建设发展的步伐。近几年高铁线路建设一路高歌,而这背后,是各种高铁技术的支撑。

具有中国血统的IGBT芯片,正在湖南株洲的一间厂房生产。IGBT,是实现能源变换与传输的核心器件,除了高铁,在智能电网、航空航天、电动汽车、新能源装备等领域应用极广。

然而这项技术诞生30多年来,一直被德国、日本等制造强国把控。三年前,中国自主研发取得突破。今天,中车的IGBT已经能够实现量产。这条8英寸IGBT生产线,每年能制造12万支芯片。这样的生产线全世界只有两条。

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