The invention discloses a hoisting construction method for large-span super-heavy steel truss girder pontoon lightering. The hoisting construction method comprises the following steps that S1, a steeltruss girder is assembled. According to the method, a 500-ton truck crane and a 350-ton crawler crane are adopted to lade one end in a double-crane hoisting manner, a pontoon lightering method is adopted to ferry a steel truss from an east bank to a west bank, and then two 350-ton crawler cranes are adopted to carry out double-crane hoisting to hoist a main beam in place. By adopting the method,lightering and hoisting operation on the super-heavy and river-crossing ultra-long-distance steel truss girder can be effectively and smoothly completed, the construction period and safe operation areguaranteed, the defect that temporary buttresses need to be arranged in the middle of a river channel during river-crossing construction of a super-heavy steel component is overcome, and river channel navigation closure time is effectively shortened. Meanwhile, construction and dismounting of the temporary buttresses are reduced, a large amount of cost is effectively reduced, and river-crossing hoisting construction of the super-heavy steel truss girder is completed through optimal mechanical configuration within a shortest possible construction period.
本发明公开了一种大跨度超重钢桁架梁浮船驳运的吊装施工方法,包括以下步骤:S1:将钢桁架梁组装好后。本发明,采用500吨汽车吊和350吨履带吊通过双机抬吊的方式将一端装船并采用浮船驳运的方法将钢桁架由东岸摆渡到西岸,然后采用两台350吨履带吊进行双机抬吊将主梁吊装到位,应用该方法能够有效的将超重、跨河超远距离的钢桁架梁顺利完成驳运和吊装作业,保证施工工期及安全作业,克服了超重钢构件在跨河道施工时河道中间需要设置临时支墩的弊端,有效缩短河道封航时间。同时,减少临时支墩的施工与拆除有效的降低了大量成本,在尽可能短的工期内使用最优的机械配置完成超重钢桁架梁跨河流吊装施工。
Hoisting construction method for large-span super-heavy steel truss girder pontoon lightering
一种大跨度超重钢桁架梁浮船驳运的吊装施工方法
2021-03-19
Patent
Electronic Resource
Chinese
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