Abstract:In order to meet the regional traffic demand of Wuhan and connect Jiangjun Fourth Road in Dongxihu District and Hexie Avenue in Jiangan District, the study on the construction scheme of West Tazihu Road Viaduct is carried out, the construction conditions of viaduct are systematically analyzed, and the important structures along the line such as Jinyintan, Zhanggong Dike and Wuhan Ring III Road and the important pipelines such as high-pressure gas, high-voltage electricity and national defense optical cables are sorted out. The applicability of various bridge types is fully analyzed according to the characteristics of different road sections, and the safe and economic bridge scheme is determined. The new materials and new processes are actively adopted in the bridge scheme, and the NC-UHPC bridge deck grading design concept and the UHPC (including coarse aggregate) bridge deck wet joint process are used for the steel-concrete composite beam across the Jinyintan section, which significantly improves the stress performance of the composite beam bridge deck, simplifies the prefabricated bridge deck reinforcement structure, and improves the construction efficiency. A long-span continuous beam steel box girder and a 86.6m-span simple-supported steel box girder are designed to span the joint of Zhangong Dike and Ring III Road, and the steel-UHPC composite bridge deck system is adopted, which effectively improves the spanning capacity of the steel box girder and improves the fatigue performance of the steel bridge deck. The noise reduction design is carried out in the land section south of Ring III Road to ensure the life quality of the surrounding residents. These designs can provide reference for similar projects.
