城市道路快速化改建工程复杂节点桥梁改造方案研究

Research on Complex Node Bridge Renovation Scheme for Urban Road Rapid Reconstruction Project

随着我国城市化进程的不断加快,交通需求的快速提升,对城市道路交通承载力提出了越来越高的要求,现状道路的改建工程呈逐年增多的趋势。中心城区部分复杂节点的桥梁改造方案涉及到对现状老桥的改造,往往需综合考虑工程废弃量、投资、对环境及交通的影响等多个因素,是改建工程的重点和难点。以上海市济阳路快速化改建工程上浦路节点改造为例,对该节点总体改造方案进行探讨,尤其是创新性地提出仅更换边板梁满足声屏障荷载增加的改造方案,并对拼缝构造进行加强设计以满足倾覆稳定性。其经验可为类似工程提供参考借鉴。

With the continuous acceleration of urbanization in China and the rapid increase in transportation demand,higher requirements have been put forward for the carrying capacity of urban road traffic.The current trend of road reconstruction projects is increasing year by year.The bridge renovation plan for some complex nodes in the central urban area involves the renovation of existing old bridges,often requiring comprehensive consideration of multiple factors such as engineering waste,investment,environmental&traffic impacts,which is the focus and difficulty of the renovation project.Taking the renovation of the Shangpu Road node in the rapid renovation project of Jiyang Road in Shanghai as an example,it explores the overall renovation plan of the node,especially innovatively proposing a renovation plan that only replaces the edge beam to meet the increase of sound barrier load,and strengthens the design of the joint structure to meet the stability of overturning.Its experience can provide reference&inspiration for similar projects.