How many tons of tension does each cable of Jiangyin Bridge bear? Which bridge does it belong to?

Jiangyin Yangtze River Highway Bridge, suspension bridge structure. Main span 1385m, height of portal reinforced concrete tower column 193m, with three beams inside. It is the fourth bridge in the world and the first bridge in China at present.

At the beginning of 1996, the north anchor shaft of Jiangyin Yangtze River Highway Bridge was completed, weighing 76,000 tons, reaching 58 meters. The plane area is as big as nine and a half basketball courts, and it can bear 64,000 tons of main cable tension.

The main cables of Jiangyin Bridge are assembled by precast parallel strand method (PPWS). Each strand consists of 127 high-strength galvanized steel wire, with a diameter of 5.35mm, a strength of 1600 MPa and a weight of 50t. The length of the steel strand is 2 180m, and the two ends are socket-type thermal spray anchors. The anchor cup is made of cast steel and cast internally. Transport to the construction site. The main cable of the main span consists of 169 strands and * * 2 1 463 steel wires. The side span is 8 strands more than the main span. The diameter of the main span is 876mm, the diameter of the side span is 897mm, and the high-strength galvanized steel wire 16. The suspension system of Jiangyin Bridge of 800 tons is mainly composed of cable clamps installed on main cables, slings installed on steel box beams and ear plates. The sling spacing is 16m, the sling length is greater than 10m, and parallel steel strands with a diameter of 5mm are used, while the sling length is less than 10m, with a diameter of 80mm, which has good flexibility. Suitable for short slings with high rigidity. When the main cable steel wire passes through the top of the tower and enters the saddle for decentralized anchorage, it will exert great pressure on the concrete, so it is necessary to set the saddle and loose cable saddle. In Jiangyin Bridge, these components are assembled by casting and welding. Each saddle, including the bottom plate, weighs 172t, and the loose cable saddle weighs 78 t. During the installation of the main span steel box girder, the sag of the main span cable changes constantly, which makes the main cables on both sides of the main tower incline. The horizontal forces are not equal. This horizontal force difference will produce a great bending moment at the root of the main tower, so during the erection of the main cable, the inclination angle of the main cable is adjusted by moving the saddle position to reduce the bending moment at the root of the main tower.