广州南沙凤凰三桥方案设计

Guangzhou Nansha Phoenix Bridge Scheme Design

凤凰三桥位于广州南沙国家新区的中央商务区,建设方将城市新区设计与桥梁方案设计,从功能和景观上的综合研究进行了国际方案竞赛。本文介绍这一新的设计模式及主跨308m的中承式系杆提篮拱桥优胜方案,以及其上下部结构设计,包括混合拱、混合梁、组合梁、组合板、三角刚架、背拉索、主墩基础等构造细节和结构分析计算过程;并介绍了中跨整孔钢箱拱的工厂拼装、横向顶推出河、排水装船、浮运、整体提升、精确合拢、中跨框架钢梁的桥面吊机悬拼等的施工及测控方法,其主要技术特点和创新点等。

The Phoenix Bridge is located at the Guangzhou Nansha State District Central Business District,the construction side will design of city design and bridge district plan,from the comprehensive study on the function and landscape of international design competition. This paper introduces the new design mode and the main span of 308 m supported tied X-type arch bridge the winning proposal,upper and lower structure design and the scheme,including hybrid arch,hybrid girder,composite beams,composite plate,the triangle frame,backstay,main pier foundation of structural details and structure analysis and calculation of introduction to cross the whole hole,insteel box arch factory assembled,launched,lateral to river drainage on board,floating,enhancing the overall,accurate closure,cross frame consisting of steel beam bridge crane cantilever construction and construction control etc. are introduced,the main technical characteristics and innovation points were also share.