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摘要：
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双壁钢围堰是大中型桥梁深水主墩施工的大型临时设施。文章以二航局施工的实例 ,介绍不同水 (潮 )流条件下定位导向船的布置、锚碇系统的水力计算 ,双壁钢围堰制作、组拼、接高、下沉着床的技术要点
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Double wall steel cofferdams are large temporary structures for building of main piers in deep water for large and medium size bridges.Based on the projects completed by CHEC Wuhan Port Construction Corp.,the paper presents an introduction to the arrangement of positioning barges under various conditions of water and tidal flows,the hydraulic calculations for the anchorage systems,and the technology for fabrication,assembling,and lowering down to foundation bed of the double wall steel cofferdam.
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