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“啊〜用力〜嗯〜轻一点雷安视频”-梳理天下新闻

高质量发展啊〜用力〜嗯〜轻一点雷安视频看中国丨小螺栓大作为 探访我国第一座跨黄河铁路钢珩拱桥

来源: 油圈网
2024-12-23 10:33:19

最佳回答

“啊〜用力〜嗯〜轻一点雷安视频”高质量发展啊〜用力〜嗯〜轻一点雷安视频看中国丨小螺栓大作为 探访我国第一座跨黄河铁路钢珩拱桥

  央广啊〜用力〜嗯〜轻一点雷安视频网西宁12月21日消息(记者啊〜用力〜嗯〜轻一点雷安视频汪晓青)冬日里,记者走进川青铁路重点建设项目尖扎黄河特大桥的施工现场,工作人员正在紧锣密鼓推进工程建设。

  位于青海省黄南藏族自治州尖扎县和海东市化隆回族自治县交界处的川青铁路尖扎黄河特大桥,是目前世界最大跨度双线铁路连续钢桁拱桥,也是我国第一座跨越黄河的铁路钢珩拱桥。桥梁总长1596.20米,其中主桥为141米+366米+141米三跨连续钢桁系杆拱桥。

  正午时分,中铁大桥局川青铁路中心试验室试验员周辉和何映正在对桥体连接处的螺栓扭矩做检测,这是一项极其考验精细度和标准化的检测工作。“经过自动化的初拧和终拧,我们需按照10%的比例进行人工抽检,确保大桥每个连接点的螺栓都安全可靠。”周辉说。

  川青铁路是西北地区链接西南、沟通华南的重要铁路通道,是西宁(兰州)至成都的便捷通道,是高速铁路网路“八纵八横”中兰(西)广高铁通道的组成部分。正线全长832.96公里,设计时速200公里。全线建成通车后,将极大便利沿线各族群众出行,加强兰西城市群和成渝城市群交流,对加强“丝绸之路经济带”和“长江经济带”联系、贯彻新时代西部大开发战略、促进区域经济协调发展具有重要意义。

  尖扎黄河特大桥主桥共设计50个节间组成,每个节间的杆件,通过拱上吊机吊起,用高强螺栓连接,就如同在高空中“拼积木”。

  目前,尖扎黄河特大桥北岸已经完成第14节间架设,南岸完成第12节间架设,一共完成26个节间架设,工程总体啊〜用力〜嗯〜轻一点雷安视频进度架设过半,预计2025年7月份实现合龙。待大桥全部完工,整座尖扎黄河特大桥上将稳稳嵌套有34万套螺栓。

  “扳手刚接触螺栓显示扭矩是100,再转动一格半,显示的就是检测值。”何映熟练地向记者介绍检测工作。冬日里,高原地区,黄河之上,凌冽的寒风似乎要比以往更刺骨一些,所以晴天的正午,正是施工的最佳时机。

  “我们的工作不只是简单的‘拧螺栓’,更要求我们每一步操作都严格符合标准,每一次测量都精准有效,每一项数据都清晰无误。每天我们站在黄河之上,看着大桥一点点架起,责任感和成就感油然而生。”何映说。

  黄河特大桥所跨之下,是碧玉蜿蜒的黄河,大桥横跨黄河上游特有鱼类国家级水产种质资源保护区。同时,这里是被誉为“中国民族射箭运动之乡”的尖扎,射箭历史悠久、氛围浓厚,形成了“五彩神箭”特色射箭文化。契合于此,正在建设中的尖扎黄河特大桥外观似一把弓箭,生动呈现着独具一格的地方人文特色,也演绎着逢山开路、遇水架桥的拼搏劲头。

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