无锡市金城东路快速化改造工程过街天桥设计

Design of Street Overpass in Wuxi Jincheng Road(E) Expressway Reconstruction Project

无锡市金城东路快速化改造工程地面快速路段在K15+200处设置一座过街天桥,过街天桥为人非混行天桥。采用Midas Civil2010有限元软件对过街天桥主桥、人行梯道以及非机动车推坡道进行受力分析,并对主桥进行自振频率计算;计算结果表明结构设计满足规范要求。对钢结构过街天桥的焊接及防腐进行了阐述,可供类似桥型设计借鉴。

A street overpass is built in K15+200 of express way section in Wuxi Jincheng Road(E)Expressway Reconstruction Project. The street overpass is one for the combined flow of pedestrians and non-motored vehicles. The load analysis is carried out to the main span, pedestrian stairway and non-motored vehicle sliding ramp of the street overpass. The natural vibration frequency is calculated to the main span. The calculation result shows that the structural design can satisfy the requirements of code. The article sets forth the welding and anticorrosion of steel-structural street overpass, which can be referred for the design of the similar bridges.