舟山沈家门港小干岛主桥设计方案比选

根据小干岛主桥桥梁跨度、周边环境、施工方案等因素,提出了中承式钢管混凝土拱桥、独塔斜拉桥及双塔斜拉桥三种方案并进行设计。从景观、施工、经济、环境影响等方面比较了三种方案的优缺点,最终推荐中承式钢管混凝土拱桥方案,并总结了中承式钢管混凝土拱桥的结构特点,为类似桥梁设计提供参考。

Comparison of Main Bridge Design Scheme in Xiaogang Island of Shenjiamen Port in Zhoushan

Based on the factors of bridge span,surrounding environment and construction scheme of the main bridge in Xiaogang Island,this paper puts forward three design schemes of half-through concrete-filled steel tube arch bridge,single-pylon cable-stayed bridge and double-pylon cable-stayed bridge,and compares the advantages and disadvantages of three schemes from the landscape,construction,economy and environmental impact.Finally,this paper recommends the half-through concrete-filled steel tube arch bridge scheme,and summarizes the structural characteristics of half-through concrete-filled steel tube arch bridge,which can be referred for the design of the similar bridges.