【摘要】：重慶幾江長江大橋主橋為176m+600m+140m的單跨懸吊鋼箱梁懸索橋。全橋共布置2根主纜,主纜采用預制平行鋼絲索股結(jié)構(gòu)、新型纏包帶除濕防護體系、預應力鋼束錨固系統(tǒng)。主纜與加勁梁間共設49對吊索,吊索采用預制平行鋼絲束股,其上、下端連接方式均為銷接式。主索鞍鞍體采用全鑄型結(jié)構(gòu),散索鞍鞍體采用鑄焊結(jié)合的結(jié)構(gòu)。加勁梁采用流線型扁平鋼箱梁,梁高3m、寬33m。南錨碇采用重力式錨碇,沉井基礎;北錨碇位于軟巖區(qū),采用型鋼加勁復合式隧道錨碇。橋塔采用鋼筋混凝土框架結(jié)構(gòu),基礎采用分離式承臺鉆孔樁基礎。
[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.
【作者單位】： 中鐵第四勘察設計院集團有限公司;西南交通大學土木工程學院;
【分類號】：U448.25

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