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誓将天堑变通途——记中交二航局总工程师张鸿

2018-04-13 15:01:05    新华网

常在工地跑,不坐办公室的工作习惯,以及懂设计、爱琢磨的专业基础,使“半路出家”的张鸿很快融入建桥体系。

  勇于创新:施工现场立下“军令状”

2002年张鸿出任二航局总工程师。考验随即不期而遇。

斜拉桥是大型桥梁的一种基础桥型。2003年动工的苏通大桥是世界上首座主跨超千米的斜拉桥,张鸿担任这个项目总工程师。滚滚江水很快给了他一个下马威。

搭建基础施工平台是建桥的第一步。直径1.4米、长达60多米的钢桩打到江底,10多根偌大钢桩却在湍急江流中抖动、倾斜、倒下,完全无法立住。

桩基立不住,基础平台搭不起,桥梁施工就无从谈起。“苏通大桥靠近长江入海口,江水深35米,江底土质松软,水流最高超过每秒5米。”张鸿回忆,前期浅水区成功试验的桩基,这种环境下就像“筷子插在豆腐上”。

焦虑中,张鸿掷下军令状:“解决不了这个问题,我引咎辞职!”

连续几天没日没夜开会商讨后,团队确定直接打入2.8米直径钢护筒,替代现行施工方案。张鸿说,然而这种工艺不仅要改变前期设计,过去也没有先例。

张鸿重新设计图纸,调整施工步骤,使施工平台顺利搭建。历经5年,苏通大桥顺利通车,创造多个世界第一,并荣获世界桥梁领域多项创新大奖。

刷新国内工程规模纪录的江苏润扬长江大桥、世界垂直高度最高的贵州北盘江大桥……张鸿负责的一系列特大型桥梁建设中的创新突破,多次获得国家科技进步奖与发明专利。

  跨江越海:誓将天堑变通途

跨海大桥面临海上大风大浪,高盐海水腐蚀,海底结构不稳定,加上远离岸上补给,建桥更复杂、难度更大。大桥能否跨越海洋,是一家企业乃至一个国家建桥综合实力的重要体现。

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