池州长江公路大桥主通航孔桥设计
Design of Main Navigable Span Bridge of Chizhou Changjiang River Highway Bridge
杨灿文 1张强 1石建华1
作者信息
- 1. 中铁大桥勘测设计院集团有限公司,湖北武汉430056
- 折叠
摘要
池州长江公路大桥主通航孔桥采用(3×48+96+828+280+100)m的双塔斜拉桥方案,桥面布置为双向6车道高速公路.主梁纵向采用飘浮体系,桥墩和桥塔设置竖向支撑,在桥塔处设置横向抗风支座,塔梁间设置纵向阻尼器.主梁采用非对称的钢-混混合梁结构,桥梁中心线处梁高3.5m,混凝土梁采用单箱六室结构,长147 m;钢梁采用扁平流线型箱梁,长1 301 m.桥塔采用花瓶形结构,北塔高237 m、南塔高243 m,上塔柱间设置6道钢横梁,斜拉索分组锚固于其中,并在钢横梁外表设置装饰钢珠.全桥共设216根平行钢绞线斜拉索.桥塔基础采用大直径钻孔灌注桩,圆端形承台.
Abstract
The design scheme adopted for the main navigable span bridge of Chizhou Changjiang River Highway Bridge is the double-pylon cable-stayed bridge with span arrangement (3×48+96+828+280+100) m and the deck of the bridge is arranged to carry dual 3-lane expressways.Longitudinally,the main girder is designed into the one of floating system.On the piers and pylons,the vertical bearings are arranged,at the pylons,the transverse wind-resistant bearings are arranged and between the pylons and main girder,the longitudinal dampers are arranged.The main girder is an asymmetric steel and concrete hybrid girder structure.The girder depth of the structure at the center line of the bridge is 3.5 m.The part of the concrete girder is the six-cell single-box structure and is 147 m long while the part of the steel girder is the flat streamlined box girder and is 1 301 m long.The pylons are the flower vase shape structures,of which the north pylon is 237 m high,the south pylon is 243 m high and between the upper columns of a pylon,6 steel cross beams are arranged.The stay cables are anchored in the pylons in groups.The surfaces of the steel cross beams on the pylons are decorated with the steel balls and on the whole bridge of the bridge,totally 216 parallel steel strand stay cables are provided.The foundations for the pylons are the large diameter bored piles and the pile caps are the round-end shapes.
关键词
斜拉桥/公路桥/飘浮体系/混合梁/桥塔/斜拉索/桩基础/结构设计Key words
cable-stayed bridge/highway bridge/floating system/hybrid girder/pylon/stay cable/pile foundation/structural design引用本文复制引用
出版年
2016
NETL
NSTL
维普
万方数据