摘要
青岛海湾大桥大沽河航道桥为不对称独塔四跨连续钢箱梁自锚式悬索桥,桥塔承台平面为圆倒角八边形,长42 m,宽23.25 m,承台厚6 m,采用钢套箱围堰施工。钢套箱围堰采用单双壁结合的形式,主要由双壁防撞围堰、封底施工单壁围堰、单壁防浪板、内支撑系统、悬吊系统等组成。采用千斤顶群顶下放方案,介绍钢套箱围堰施工技术,详细介绍钢套箱围堰整体下放施工。
The Dagu River Shipping Channel Bridge of Qingdao Bay Bridge is a single tower self-anchored suspension bridge with asymmetric 4-span continuous steel box girder. The pile cap of the tower pier of the Bridge is a rounded corner octagonal structure in plan, 42 m in length, 23.25 m in width and 6 m in depth and the pile cap is constructed by the steel boxed cofferdam. The cofferdam is a combined single-wall and double-wall one mainly composed of the double-wall collision-proof part, single-wall part for concrete bottom sealing, single-wall breakwater board, internal supporting system, suspension system and the cofferdam is lowered in place by group jacks. The construction techniques for the cofferdam are presented herewith and the construction of the integral lowering of the cofferdam is described in detail.
出处
《桥梁建设》
EI
CSCD
北大核心
2009年第A01期43-46,共4页
Bridge Construction
关键词
青岛海湾大桥
自锚式悬索桥
桥塔
承台
钢套箱围堰
桥梁施工
Qingdao Bay Bridge
self-anchored suspension bridge
tower
pile cap
steel boxed cofferdam
bridge construction
