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巴东长江大桥主梁施工,采用前支点式挂篮,为节约工期,挂篮直接作为主梁现浇段承重支架的一部分。挂篮主承重系统共重120t,单件最大起重量30t,起吊高度120.8m。在进行挂篮安装过程中,采用自行设计、自行加工的“独臂摇头扒杆”,取得了较好的效果。本文对主梁施工挂篮的拼装技术进行介绍。
Badong Yangtze River Bridge girder construction, the former fulcrum-type hanging basket, in order to save time, hanging basket directly as a part of the load bearing frame of the main beam. The main weight of the hanging basket system weighs 120t, the maximum lifting capacity of a single piece 30t, lifting height 120.8m. In the process of hanging basket installation, using their own design, self-processing of “one arm shaking his head”, and achieved good results. This article describes the assembly technology of the main beam construction basket.