长江下游过江通道再增密 南京新生圩长江大桥通车

Core Points - The Nanjing Xinxin River Yangtze Bridge has been completed and opened to traffic on November 26, 2023, marking a significant infrastructure development in Nanjing [1][3][5] Group 1: Project Overview - The bridge is a major project during the "14th Five-Year Plan" period for Nanjing's urban development, with a total length of approximately 13.17 kilometers and a design speed of 80 km/h, featuring six lanes in both directions [2] - The main span of the bridge is a single-span suspension bridge with a main span of 1760 meters, making it the largest of its kind in China and the third largest in the world [2] - The main tower of the bridge stands at 263.8 meters, equivalent to an 88-story building, and features a unique "N" shaped steel structure design inspired by the pinyin initial of Nanjing [2] Group 2: Construction Techniques - The construction team employed new technologies, including the dual-layer SMC method for anchorage wall reinforcement in large-span suspension bridges [2] - A movable soil excavation platform was developed to enhance efficiency by allowing excavation equipment to operate closer to the edge of the foundation pit [2] - The project also introduced a modular new process for concrete filling in deep foundation pits [2] Group 3: Impact on Transportation - The bridge establishes a rapid transit route between Nanjing's Jiangbei New Area and Qixia District, reducing travel time from one hour to just ten minutes between Qixia Avenue and Jiangbei Avenue [4] - This development is expected to significantly enhance the traffic capacity of the Yangtze River crossing in the lower reaches [4]