上海嘉闵高架蕴藻浜大桥设计要点

The Design Detail of Yunzaobang Bridge of Shanghai Jiamin Viaduct

蕰藻浜大桥是嘉阂高架路及地面道路新建工程中的一座特大桥,采用跨径160 m钢管桁架系杆拱桥,三幅并板全宽70.8 m。介绍了大桥结构设计的要点,包括主要参数的比选,圆钢管节点的疲劳设计、多箱室拱座设计、"2+1=1"横向分幅分阶段拼接设计的思路。

The Yunzaobang Bridge, a tied-arch bridge with steel tube trusses, is a long-span bridge of the Jiamin viaduct and ground road project.The 160 meter span bridge has a width of 70. 8 meters with three decks spliced in steps. This paper introduces key points of the structural design,including comparison and selection of main parameters, the fatigue design of tubular joint, the design of multi-box skewback, and the design concept of transverse segmental construction.