南林大桥主桥改建方案研究

Research on Reconstruction Scheme of the Main Bridge of Nanlin Road Bridge

针对老城区桥梁改建难题,以浙江省湖州南浔区南林大桥主桥改建为例,从交通流量、航道要求|南浔本土文化、周边地块和旧桥利用等方面逐一分析了影响桥梁改建方案的因素;经综合比选,确定了经济合理、造型美观的叠合加劲梁桁架拱桥方案。在此基础上进一步研究了桥梁施工方案,并采用有限元软件对结构进行了比选和优化计算。研究成果可为同类型主桥改建方案的选定与施工方法的选择提供依据,对相关工程技术人员有一定的参考价值。

Aiming at the problem of bridge reconstruction in the old city,the reconstruction of the main bridge of Nanlin Bridge in Nanxun District,Huzhou,Zhejiang Province was taken as an example to conduct research.The factors affecting the bridge reconstruction plan are analyzed from the aspects of traffic flow,waterway requirements,Nanxun local culture,surrounding land and the use of old bridges,etc.After comprehensive comparison and selection,an economical,reasonable and beautiful-looking superimposed stiffening girder truss arch bridge program was determined.On this basis,the bridge construction plan was further studied,and the finite element software was used to compare and optimize the structure,and finally determined the main bridge plan.The research results can provide a basis for the selection of the same type of main bridge reconstruction plan and the selection of construction methods,and have high reference value for related engineering and technical personnel.