Research on Overall Scheme of Qidu Bridge Ⅱ in Wenzhou
Qidu Island,as the core carrier of the international science and technology island of Wenzhou in future,its traffic pressure is increasing rapidly.It is urgent to plan a new channel to solve the travel problem on the island.The feasibility of construction is discussed from the aspects of construction conditions,vertical section control factors and the others.For considering the technical requirements of slow traffic,the different grounding schemes are studied.Based on the landscape orientation,the rationality of the seven-span continuous half-through+deck composite arch bridge scheme for the main bridge is discussed.Considering the special traffic function of the bridge,the different types of double-deck bridge structure are compared.It is proposed to use the double-sided box girder structure for the upper deck and the steel truss structure for the lower deck.The scheme can provide reference for the design of municipal bridges across rivers.
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