Description

The Nanxi River mega bridge is located in Yongjia County, Zhejiang Province. It spans the Zhu Yong Expressway and the Nanxi River, serving as a pivotal project for package  6 of the Hangzhou-Wenzhou High-Speed Railway. The bridge, measuring 481.6 meters in length, features a double-tower, double cable plane concrete cable-stayed bridge with a span of (40.5+79.5+240+79.5+40.5) meters and a semi-floating system. The main beam is constructed using the underslung form traveler for concrete casting, while cantilever form travelers are employed for approach bridges.

For this project, Boyoun provided 2 sets of underslung form traveler and 6 sets of cantilever form travelers. The underslung form traveler is the primary construction equipment for constructing the concrete main beams of large-span cable-stayed bridges. Boyoun has developed it for the third generation and it is widely used in various projects both domestically and internationally.

After the completion of the Hangzhou-Wenzhou High-Speed Railway, it will closely connect the three major urban areas of Hangzhou, Jinyi, and Wenzhou, forming a backbone intercity rail transit line radiating from the core area of the Yangtze River Delta to the southeastern region of Zhejiang Province. At the same time, it will connect the rich tourism resources of Hangzhou, Jinhua, Yiwu, Wenzhou, and other areas into a network, which will be significant in improving the layout of regional transportation networks, creating a "one-hour" transportation circle in Zhejiang Province, and promoting common prosperity, urban-rural integration, and coordinated development of industries.

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