Aluminum Alloy Pedestrian Bridge in Hangzhou

Innovative Aluminum Alloy Pedestrian Bridge in Hangzhou (China)

On January 28, 2013, Conglin Group successfully designed and manufactured China’s first all-aluminum alloy pedestrian bridge for Hangzhou’s Xin Jie Bai Pedestrian Overpass. This project marks the first large-span aluminum alloy bridge designed and built by Conglin Group, following China’s first aluminum alloy pedestrian bridge built in 2006.

Located at the intersection of Qingchun Road and Yan’an Road, the Xin Jie Bai pedestrian bridge spans 217.55 meters, with a width of 4.8 meters and a weight of 226 tons. It was designed to accommodate over 4,000 pedestrians simultaneously, making it a high-traffic urban bridge. The bridge features a unique “口”-shaped design with four main trusses, four transition trusses, and integrated escalators and stairs, all crafted from high-quality aluminum alloy.

How We Help Our Clients

Designing the Future of Bridge Architecture

The Xin Jie Bai pedestrian bridge faced significant design challenges due to the unique material choice of aluminum alloy instead of traditional steel. To solve this, Conglin Group collaborated with the Hangzhou Urban Construction Design Institute to create an entirely new design based on aluminum alloy’s mechanical properties. The key to this innovation was optimizing the structural components—including the trusses, beams, and joints—to maximize strength, reduce weight, and ensure durability.

Conglin’s team designed the bridge with an emphasis on both aesthetics and functional performance, integrating advanced aluminum alloys like 6082 to improve weldability, machinability, and corrosion resistance. The use of finite element analysis (FEA) enabled detailed optimization of the entire bridge structure, ensuring the bridge met the required load-bearing capacity while maintaining minimal deflection.

Manufacturing Innovation and Precision

To build this innovative bridge, Conglin Group fabricated complex aluminum components including the aluminum trusses and structural profiles. The manufacturing process involved advanced CNC machining and precision casting to create components with tight tolerances. Specialized tools and jigs were developed to handle the large-scale components, and innovative bolted connections were used to avoid the weakening effects of welding on aluminum.

Sustainability and Durability

The bridge’s rainwater drainage system was carefully designed to ensure efficient water runoff, using wide arching surfaces, side water channels, and integrated downspouts. Furthermore, the polyurea elastomer coating applied to the bridge’s surface provides enhanced slip resistance, while also offering long-lasting protection against wear, water damage, and corrosion.