跨洪奇沥水道特大桥钢桁柔性拱架设方案比选

Comparison of the erection scheme of steel truss flexible arch in Hongqi Lishui

针对跨洪奇沥水道特大桥钢桁柔性拱桥的结构特点、孔跨布置及现场条件的综合分析,提出了2套主桥钢桁梁架设方案及2套柔性拱架设方案,并从施工安全风险、施工效率、临时结构工程量、架设工期以及经济效益等多方面进行对比分析,确定了最终的钢桁柔性拱架设施工方案,对后期的施工组织编制提供了技术支持。

Aiming at the structural characteristics,hole span layout and site conditions of the steel arched flexible arch bridge across the Hongqi Lishui Bridge,two sets of main bridge steel truss erection schemes and two sets of flexible arch erection schemes were proposed,and the construction safety risks were taken.The construction efficiency,temporary structural engineering quantity,erection period and economic benefits were compared and analyzed,and the final steel truss flexible arch facility plan was determined,which provided technical support for the later construction organization.