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上海轨道交通17号线10标段在世界上首次采用“双U+箱型”复合型变截面节段拼装连续梁桥设计,其涵盖了线路上全部的20处预制节段拼装连续梁桥和7处悬浇连续箱梁桥,具有桥梁数量多、分布地域广、条件复杂、施工节点多、临标协调量大等特点。施工难题前所未有常规的节段拼装梁一般采用箱式结构,但本工程采用了“双u+箱型”复合变截面形式节段拼装梁桥设计,这在国内外都是首次运用,该梁型“U”型开口结
For the first time in the world, Lot 10 of Shanghai Metro Line 17 adopts the design of a “double U + box” composite variable section segment assembled continuous girder bridge, which covers all the 20 prefabricated section continuous girder bridges And 7 suspension cantilevered continuous box girder bridge, with a large number of bridges, widely distributed, complex conditions, the construction of more nodes, large amount of coordination of the temporary and so on. Construction problems The conventional segment assembled beam generally adopts the box structure, but this project adopts the “double u + box” composite variable section in the form of segment assembled beam bridge, which is the first time at home and abroad, the beam Type “U ” type open knot