株洲清水塘大桥双层钢桁拱桥下部结构设计

Substructure Design of Double-deck Steel Truss Arch Bridge for Qingshuitang Bridge in Zhuzhou

结合株洲清水塘双层桁架拱桥工程,详细分析讨论了主桥下部结构的设计要点,在水位落差大、阻水率要求高、船舶撞击作用、外形景观美观、拱桥施工工艺等外部条件限制下,对桥墩桩基承台布置、受力模式、构造细节等进行了深入研究,介绍了设计的方法和内容,总结归纳了特大跨径跨江桥梁下部结构设计经验。

Combined with Zhuzhou Qingshuitang Double-deck Truss Arch Bridge Project,the design essentials of the substructure of the main bridge are analyzed and discussed in detail.Under the external conditionality of the large water level drop,high water resistance rate,ship collision,beautiful appearance landscape and arch bridge construction technology,the base slab layout,stress mode and construction details of the pier pile foundation are deeply studied.The design methods and contents are introduced.The substructure design experience of the extra-long span cross-river bridge is summarized.