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一、工程概况南浦大桥是上海市区第一座跨越黄浦江的大桥。全桥长8346m,通航净高为46m,建成后日通车能力为4.5～5万辆,是我国跨度最大的斜拉桥。我公司承建的南浦大桥主桥,为一跨过江的双塔双牵面斜拉桥,全长846m,采用钢梁与钢筋混凝土板相结合的迭合梁结构。中心净跨423m,主桥索塔高154m,为折线呈花瓶形钢筋混凝土结构(图1)。它由塔座(4.5m高、呈六棱台状)、下塔柱(29m高)、下横梁(7m×8m,长42m)、中塔柱(55m
I. Project Overview Nanpu Bridge is the first bridge across the Huangpu River in Shanghai. The total length of the bridge is 8346m, and the navigable net height is 46m. After the completion of the bridge, the opening capacity is 4.5 to 50,000 vehicles. It is the largest cable-stayed bridge in China. The main bridge of Nanpu Bridge constructed by our company is a double-tower double-faced cable-stayed bridge spanning the river. It has a total length of 846m. It adopts a laminated beam structure combined with steel beams and reinforced concrete slabs. The net span of the center is 423m and the height of the main tower is 154m. It is a vase-shaped reinforced concrete structure for the fold line (Figure 1). It consists of a tower (4.5m high, six-pronged platform), a lower column (29m high), a lower beam (7m × 8m, length 42m), and a middle column (55m