重庆几江长江大桥主桥设计
发布时间：2018-07-22 15:43
【摘要】：重庆几江长江大桥主桥为176m+600m+140m的单跨悬吊钢箱梁悬索桥。全桥共布置2根主缆,主缆采用预制平行钢丝索股结构、新型缠包带除湿防护体系、预应力钢束锚固系统。主缆与加劲梁间共设49对吊索,吊索采用预制平行钢丝束股,其上、下端连接方式均为销接式。主索鞍鞍体采用全铸型结构,散索鞍鞍体采用铸焊结合的结构。加劲梁采用流线型扁平钢箱梁,梁高3m、宽33m。南锚碇采用重力式锚碇,沉井基础;北锚碇位于软岩区,采用型钢加劲复合式隧道锚碇。桥塔采用钢筋混凝土框架结构,基础采用分离式承台钻孔桩基础。
[Abstract]:The main bridge of Jijiang Yangtze River Bridge in Chongqing is a single span suspension steel box girder suspension bridge with 176m 600m 140m. Two main cables are arranged in the whole bridge. The main cables are prefabricated parallel steel wire strands, a new protective system for dehumidification with wrapped bands, and a prestressed steel cable Anchorage system. There are 49 pairs of slings between the main cable and the stiffened beam. The sling is prefabricated with parallel steel wire strands. The upper and lower ends of the sling are all pin-connected. The main cable saddle adopts the whole cast structure, and the loose cable saddle adopts the structure of casting and welding. The stiffening beam adopts streamlined flat steel box girder, which is 3 m high and 33 m wide. The south Anchorage adopts gravity Anchorage with caisson foundation, and the North Anchorage is located in soft rock area with steel reinforced composite tunnel Anchorage. The bridge tower adopts reinforced concrete frame structure and the foundation adopts separate pile foundation.
【作者单位】： 中铁第四勘察设计院集团有限公司;西南交通大学土木工程学院;
【分类号】：U448.25
[Abstract]:The main bridge of Jijiang Yangtze River Bridge in Chongqing is a single span suspension steel box girder suspension bridge with 176m 600m 140m. Two main cables are arranged in the whole bridge. The main cables are prefabricated parallel steel wire strands, a new protective system for dehumidification with wrapped bands, and a prestressed steel cable Anchorage system. There are 49 pairs of slings between the main cable and the stiffened beam. The sling is prefabricated with parallel steel wire strands. The upper and lower ends of the sling are all pin-connected. The main cable saddle adopts the whole cast structure, and the loose cable saddle adopts the structure of casting and welding. The stiffening beam adopts streamlined flat steel box girder, which is 3 m high and 33 m wide. The south Anchorage adopts gravity Anchorage with caisson foundation, and the North Anchorage is located in soft rock area with steel reinforced composite tunnel Anchorage. The bridge tower adopts reinforced concrete frame structure and the foundation adopts separate pile foundation.
【作者单位】： 中铁第四勘察设计院集团有限公司;西南交通大学土木工程学院;
【分类号】：U448.25
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