长沙梅溪湖节庆岛浮桥结构设计

Structural Design of Floating Bridge in Jieqing Island Meixi Lakein Changsha

为减少传统桥梁施工方法对景区湖泊的污染,长沙梅溪湖节庆岛人行桥采用由FRP浮箱、钢纵横梁桥面系、混凝土定位桩组成的浮桥结构体系,通过理论计算、构造细节设计、开通运行等验证了浮桥结构的可靠性。结果表明:1)浮桥结构所有杆件工厂批量加工、现场组拼,施工效率高、污染小;2)该浮桥结构的安全性、舒适性能满足人行结构要求;3)该结构体系在内湖景区人行通道建设上,具有较好推广价值。

In order to reduce the pollution to the lake in scenic areas using the traditional bridge construction method,the foot bridge overMeixi lakeof Jieqing islandisused floating structural system which consists of FRP floating box,the steel bridge decking,positioning concrete pile foundation.Bythetheoreticalcalculation,detail design and the launched testing,its structure is verified to be reliable.Theresults show that:1)it is convenient for mass processing,assembling at the construction site,which has high efficiency and less pollution;2)its safety and comfort performance meet the requirements of foot bridge;3)it is a system in the development of pedestrian path of lake scenic area,which has good promotion value.