走近大国工程 | 飞虹跨江 天堑通途探访世界最大跨径四主缆悬索桥—燕矶长江大桥

Core Viewpoint - The construction of the Yanqi Yangtze River Bridge represents a significant achievement in China's transportation infrastructure, emphasizing the importance of building a sustainable and efficient transportation system to support high-quality economic development [3][21]. Group 1: Project Overview - The Yanqi Yangtze River Bridge is the world's largest cable-stayed bridge with a main span of 1860 meters and is expected to be completed by 2026 [3][5]. - The bridge features a dual-layer design with the upper layer for a six-lane expressway and the lower layer for a four-lane urban expressway, enhancing regional traffic efficiency [3][21]. - The bridge will serve as a critical link between the cities of Ezhou and Huanggang, facilitating a logistics hub with the nearby Ezhou Huahu International Airport [3][6]. Group 2: Engineering Innovations - The bridge's design includes a unique "different curvature four main cable" structure, which optimizes load distribution and enhances structural safety [7][21]. - The main towers are notably lower than typical designs, with the north tower at 195 meters and the south tower at 184 meters, yet they support a significant main span [5][10]. - The construction team utilized advanced technologies, including intelligent monitoring systems and custom-built lifting equipment, achieving a remarkable installation speed of one beam per day [12][15][17]. Group 3: Construction Challenges - The project faced significant technical challenges due to the innovative design, requiring extensive data analysis and feasibility studies to ensure safety and efficiency [13][18]. - The construction team developed new methods to address the unique demands of the bridge's structure, including a custom ice-making machine to manage concrete temperatures during summer [18][21]. - The project has successfully transitioned to the construction of the bridge deck and auxiliary structures, with a focus on ensuring timely completion by 2026 [21][22].