钢铁长虹跃大江 探秘“世界第一跨”的创新密码

Core Viewpoint - The construction of the Zhang Jinggao Yangtze River Bridge represents a significant achievement in China's bridge engineering capabilities, showcasing both technological advancements and a commitment to environmental considerations and rigorous engineering standards [1][11]. Group 1: Bridge Specifications and Innovations - The Zhang Jinggao Yangtze River Bridge spans approximately 29.85 kilometers, with a main span of 2300 meters, setting a new record for suspension bridges [3][4]. - The bridge features several world records, including the highest suspension bridge tower at 350 meters and the longest high-strength main cable at 4450 meters [7]. - Innovative design elements include a self-balancing cable force structure and a unique rolling saddle structure that allows for cable force optimization [7][8]. Group 2: Economic Impact and Strategic Importance - The bridge is a key project for the integration of the Yangtze River Delta and the development of the Yangtze Economic Belt, aiming to enhance regional connectivity and economic collaboration [11]. - Upon completion, the bridge will significantly reduce travel time between Suzhou and Nantong to just 4 minutes, facilitating resource flow and lowering logistics costs [11][12]. - The construction phase is expected to directly boost regional GDP through investment multiplier effects, while the operational phase will provide ongoing economic benefits through improved logistics and industry optimization [11].