杭州湾跨海铁路桥建设提速 助力“轨道上的长三角”

Core Viewpoint - The construction of the Hangzhou Bay Cross-Sea Railway Bridge is progressing rapidly, marking a significant step in the development of the "Railway on the Yangtze River Delta" initiative [1][2]. Group 1: Project Overview - The Hangzhou Bay Cross-Sea Railway Bridge is a key project for the newly constructed Tongzhou-Ningbo High-Speed Railway, featuring three navigation bridges and a total length of 29.2 kilometers, designed for a speed of 350 kilometers per hour [2][3]. - The South Navigation Bridge spans 814.5 meters with a main span of 364 meters, utilizing a steel truss combined beam cable-stayed bridge structure [2]. Group 2: Construction Challenges - The construction environment in Hangzhou Bay is complex, characterized by significant tidal differences, strong erosion, rapid currents, and deep mud layers, which pose high safety risks and construction difficulties [2]. - The construction team implemented continuous 11-hour operations and utilized a smart temperature control system to ensure the quality and durability of the concrete [2]. Group 3: Strategic Importance - The Tongzhou-Ningbo High-Speed Railway is an essential part of China's "Eight Vertical and Eight Horizontal" high-speed rail network along the coast, connecting multiple cities and enhancing the integration of the Yangtze River Delta region [3].