张靖皋长江大桥迎来最新建设进展

Core Viewpoint - The Zhang Jinggao Yangtze River Bridge has reached a significant construction milestone with the completion of the main towers for both the south and north navigation bridges, marking a transition from substructure to superstructure work [1][3]. Group 1: Construction Progress - The main towers of the south and north navigation bridges have been capped, completing the main structural work of the four towers [1]. - The south navigation bridge features a main span of 2300 meters, setting a world record for the largest span bridge [3]. - The two main towers of the south navigation bridge stand at 350 meters, making them the tallest suspension bridge towers globally [3]. Group 2: Engineering Innovations - The main tower construction utilizes a world-first "steel box-steel pipe concrete constraint composite system," reducing the tower's self-weight by approximately 50% while enhancing wind and seismic resistance by 30% [5][6]. - The tower columns are assembled in a modular fashion with 30 prefabricated segments, akin to building with blocks [6]. - The project team has achieved high-precision jointing under stress-free conditions, laying the groundwork for the subsequent installation of the cable system [6]. Group 3: Strategic Importance - The completion of the bridge is expected to significantly contribute to the integrated development of the Yangtze River Delta, optimize the river's crossing channels, and improve the regional road network layout [6].