中山北路交通路主交桥,是我国第一座采用斜拉桥式的立交桥,由主桥、引桥、衡接段三部分组成,全桥长992米。主桥为独塔斜拉桥,塔型为钳形,南塔基——独塔1号墩下的基础,由18根直径900厘米、长75米,壁厚16毫米～18毫米钢管桩组成。75米超长钢管桩在上海还是首次施打,前无实践经验,为了掌握:①16毫米～18毫米壁厚 The main traffic bridge of Zhongshan Road North Road is the first of its kind in China to use a cable-stayed bridge. It consists of a main bridge, an approach bridge, and a Hengjie section. The bridge is 992 meters long. The main bridge is a single-tower cable-stayed bridge, the tower type is clamp-shaped, and the south tower base is the base under the No. 1 pier of the tower. It consists of 18 steel pipe piles with a diameter of 900 cm, a length of 75 meters and a wall thickness of 16 mm to 18 mm. composition. The 75-meter long steel pipe pile was first used in Shanghai. There was no practical experience before. In order to grasp: 116 mm to 18 mm wall thickness