舜江大桥主桥改造设计与分析

Main Bridge Renovation Design and Analysis of Shunjiang Bridge

舜江大桥是沟通上虞老城区与开发区之间交通联系的主要跨曹娥江通道,为了完善区域内跨曹娥江桥梁的整体布局,改善过往车辆过江通行的交通条件,需对现状老桥进行拼宽改造。新建舜江大桥主桥采用跨径176m下承式钢箱系杆拱桥,主拱断面为八边形,主梁采用分离式双箱系梁形式,全桥共设52根吊杆。采用Midas Civil建立主桥有限元模型对其进行结构分析,计算结果表明主桥承载能力、刚度和稳定性均能满足要求。

The Shunjiang Bridge is the main cross-river passage of the Cao'e River that connects the transportation between the old urban area and the development zone of Shangyu.In order to improve the overall layout of bridges crossing the Cao'e River in the region,and improve the traffic conditions for passing vehicles,it was necessary to widen and renovate the existing old bridge.The main bridge of the newly built Shunjiang Bridge adopts a 176m through steel box tied arch bridge.The main arch section was octagonal,and the main beam adopted a separated double box system beam form.A total of 52 suspension rods were installed throughout the bridge.The finite element model of the main bridge was established using MIDAS Civil for structural analysis,and the calculation results indicated that the bearing capacity,stiffness,and stability of the main bridge could meet the requirements.