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新建的准格尔至朔州Ⅰ级重载铁路黄河特大桥,主桥采用1-360m提篮型钢管混凝土拱结构,全长655.60米,主拱结构由两根拱肋(横向内倾角8°)与28道横向连接系组成,拱肋中心距在拱脚部位为25.2m,在拱顶部位为8.335m。主跨单根拱肋由直径1.5m的四管形式构成,并采用等宽变高截面,其宽度4米,高度在拱脚处12.5米,在拱顶处7.5米。钢管拱施工线形(施工质量)在空钢管吊装、空钢管合龙阶段中,已施工拱肋节段各点之间连接而
The newly constructed Zhungeer-Shuozhou Grade I Heavy-Duty Railway Yellow River Super-Large Bridge adopts a 1-360m basket-type CFST arch structure with a total length of 655.60 meters. The main arch structure consists of two arch ribs (horizontal inclinations of 8 °) And 28 horizontal connection system, arch center distance in the arch of the foot is 25.2m, in the vault is 8.335m. The single span of the main span is made up of four pipes of 1.5m in diameter and adopts a section with a constant width and a height of 4m. The height of the main span is 12.5m at the arch foot and 7.5m at the vault. Pipe arch construction linear (construction quality) In the empty steel pipe hoisting, empty steel tube in the dragon stage, the construction of arch ribs between the points connected