闵浦二桥公轨两用双层主桥的设计及关键技术

Design of Main Part of Highway-rail Double Decked Minpu Bridge 2 and Key Techniques

闵浦二桥是一座公轨两用一体化双层特大桥。主桥为独塔双索面双层斜拉桥,是目前国内跨度最大的公轨两用双层斜拉桥。从主桥跨径布置、桥型选择、总体布置、上部结构设计、下部结构设计等方面介绍了闵浦二桥主桥设计的构思,从焊接节点、桥梁耦和振动性能、抗震性能、抗风性能、防船撞系统、大桥健康监测系统等阐述了相关的关键技术。

Minpu Bridge 2 is a super large bridge with the integrated double decks for highway and rail traffic. The main part is of the double-decked cable-stayed bridge with a single pylon and double cable planes, which is the largest of the kind in current China. Introduced hereby are the ideas for the design, mainly from the arrangement of main spans, type of bridge, overall layout, wind resistance, the superstructure and substructure design, including the relevant key techniques from the welded nodes, the performance of coupling and vibration, antiseismic properties, wind resistant properties, the system against collision by ships and the system monitoring the condition of the bridge.