漳汕高铁东山跨海特大桥栈桥合龙

Core Points - The successful completion of the last bridge deck panel marks the joining of the Zhangshan High-speed Railway Dongshan Cross-sea Bridge trestle [1][3] - The Dongshan Cross-sea Bridge spans 20.26 kilometers, connecting Yunxiao County, Dongshan County, and Zhao'an County in Fujian Province, and is a key control project of the Zhangshan High-speed Railway [3][5] - The trestle bridge, measuring 9.4 kilometers, serves as an important construction "auxiliary road" and "platform" for the main bridge [3][5] Construction Details - The project faced complex construction conditions, including strong winds and seawater erosion, which were overcome through technical innovations and precise construction methods [5] - The project team utilized the BeiDou satellite positioning system to ensure accurate placement of steel pipe piles, enhancing construction precision [5] - The completion of the trestle bridge allows for a significant reduction in construction distance from 20 kilometers to 9 kilometers, accelerating the overall bridge construction process [7] Strategic Importance - The Zhangshan High-speed Railway is a vital part of the national "eight vertical and eight horizontal" high-speed railway network, enhancing connectivity between the Yangtze River Delta, Guangdong-Hong Kong-Macao Greater Bay Area, and Southeast coastal city clusters [7] - The project is expected to promote the integration of industrial resources between Guangdong and Fujian provinces and facilitate regional economic and social development [7]