Sany pump truck participated in the construction of Nanjing Dashengguan Bridge

The main span of Nanjing Dashengguan Yangtze River Bridge is 2×336 meters, and the arch is the world's similar bridge *8981 large span, and the bridge is arranged according to six lines, namely the Beijing-Shanghai high-speed railway double line, the Shanghai-Hanrong railway double line and the Nanjing subway double line; Among them, the Beijing-Shanghai high-speed railway has a design speed of 300 kilometers per hour, the Shanghai-Hanrong railway is a class I trunk line, with a common line for passengers and goods, the design speed of passenger cars is 200 kilometers per hour, and the speed of Nanjing Metro is 80 kilometers per hour. The two ends of the steel arch truss girder full truss are 240 meters for the flat chord truss, 16.0 meters high, the N-shaped truss with an internode length of 12.0 meters, and the vertical rod is perpendicular to the longitudinal slope of the line. The two main spans of 336 meters are continuous beams of steel truss arches, the sagittal height of the arch is 84.2 meters, the sagittal span ratio is about 1/4, the height of the arch truss is 12 meters, and the total height from the arch toe to the vault is 96.2 meters. The flat chord and the arch truss are connected by a stiffened chord and a variable height truss. The railway deck is set on the lower chord of the flat chord and the tie rod of the arch truss, which is about 28 meters high from the toe of the arch. There are four 15-meter internodes within 60 meters on each side of the three main piers, and the remaining internodes are 12 meters long, and the vertical rods are vertically arranged. Because the bridge deck has a vertical curve, it is necessary to take into account the symmetry of the arch span structure, and the two internodes of the main pier in the nearly 7# are adjusted to 15.72 meters, and the length of the remaining internodes is still 12 meters.