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芜湖长江大桥为双塔双索面钢桁斜拉桥 ,主跨长 312m。由于没有现成的合龙经验可以借鉴 ,通过全体工作人员的共同努力 ,使其合龙误差成功地控制在了 0 0 75mm以内 ,合龙工期仅为 5天 ,这在中国建设史上是前所未有的。它开辟了大跨度钢桁斜拉桥跨中合龙的先河 ,为以后类似桥梁的合龙提供了宝贵的成功经验。文章详细介绍了该桥主跨跨中合龙的特点、合龙的施工方案以及具体的合龙方法和步骤。
Wuhu Yangtze River Bridge is a double-tower, double-cable steel truss cable-stayed bridge with a main span of 312m. Because there is no ready-made experience that can be borrowed from the experience, through joint efforts of all staff, the success rate of closure error is controlled within 0 075mm, and the closure period is only 5 days, which is unprecedented in the history of China’s construction. It opens up a precedent for the bridge spanning of the long-span steel truss cable-stayed bridge, which provides valuable success stories for future similar bridges. The paper introduces in detail the characteristics of the main span of the bridge, the construction scheme of the dragon and the specific closing methods and steps.