en.Wedoany.com Reported - On April 30, the asphalt paving of the steel deck for the main navigation channel bridge of the Ma'anshan Yangtze River Highway-Railway Bridge, constructed by China Railway Major Bridge Engineering Group Co., Ltd., was successfully completed, marking the official entry of the bridge into the final sprint stage. Located in Anhui Province, China, the Ma'anshan Yangtze River Highway-Railway Bridge is a combined bridge accommodating four railway lines and a six-lane urban expressway. The upper deck is designed for a speed of 80 kilometers per hour, while the lower deck carries a dual-line high-speed railway with a speed of 250 kilometers per hour and a dual-line intercity railway with a speed of 200 kilometers per hour.

Faced with the task of paving nearly 80,000 square meters of steel bridge deck, the project department tackled three major challenges: the coordination pressure between large-scale continuous production and efficient construction organization, the technical constraints of modified polyurethane material being highly moisture-sensitive with an extremely short pot life, and the stringent requirements imposed on the pavement structure by the complex stress characteristics of the steel deck. They adopted multi-dimensional process tests for repeated verification, continuously optimized the construction workflow, and introduced equipment such as digital intelligent ambient-temperature epoxy mixing plants and intelligent aggregate spreaders. Strict control was exercised over every process standard, with full traceability management from material arrival to pavement formation. The pavement adopted a composite structure of "modified polyurethane concrete plus SMA modified asphalt concrete" to adapt to the complex stress characteristics of the steel deck.

The bridge is the controlling project of the Chaohu-Ma'anshan Intercity Railway. With a massive construction scale, it has set six world records and is the world's longest-span three-tower cable-stayed bridge. Once completed and opened to traffic, the bridge will become a new passageway from Anhui, China, to the Yangtze River Delta region.

This article is compiled by Wedoany. All AI citations must indicate the source as "Wedoany". If there is any infringement or other issues, please notify us promptly, and we will modify or delete it accordingly. Email: news@wedoany.com