The cable-stayed bridge crossd Suiyan road is the four lines of a single pylon and double cable plane cable-stayed bridge on curve located in the complex traffic environment of the city. The curve radius is 1147.8m. It is cross on the Xihuan central expressway, near Wuguang high speed railway. The nearest distance of the lateral pylon structure from Wuguang high-speed railway is 18.8m, the work is very difficult. The span arrangement of the bridge is ( 32.6+175+175+32.6 ) m. The main tower is double column tripod-shaped framework structure by rectangular hollow section, the height of tower is 141.98m. Tower construction is using the method of climbing formwork and climbing frame. Because the projective is covering the Xihuan expressway. The construction of lower beam is completed in the scaffold by floor type protection, the middle beam and upper beam is constructed by corbel supporting frame formwork.%跨穗盐路斜拉桥是一座位于城市复杂交通环境中的四线独塔双索面曲线斜拉桥,曲线半径为R=1147.8m,其上跨西环高速公路,比邻武广高速铁路,桥塔结构外侧距武广高铁最近距离为18.8m,施工难度大.该桥孔跨布置为(32.6+175+175+32.6)m,主塔为双柱式鼎形框架结构,矩形空心截面形式,塔高141.98m(含塔座).塔柱施工采用爬模爬架法,由于施工投影覆盖西环高速公路,其下横梁施工在落地式防护棚架下完成,中、上横梁采用牛腿支承支架立模施工.
展开▼
