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Zaha Hadid Architects Announce Completion of Chengdu West First Bridge in China

Zaha Hadid Architects (ZHA), who are working on multiple projects in China, have announced the completion of the Jiangxi River Bridge. Called the “Chengdu West First Bridge”, it is the first bridge on the Chengdu’s West Line Road in China.

Stretching 295 meters, it spans the Jiangxi River, a tributary of the Tuojiang River in Sichuan province. The bridge includes a central span of 185 meters and secondary spans of 55 meters, connecting the riverbanks. Designed for road, cycling, and pedestrian use, the bridge transforms the West Line Road into the western part of the Airport New Town ring-road and cycle path.

Advanced tools to create a structurally sound bridge

In their announcement, ZHA state that they used advanced structural analysis software to assess the digital model of the design. This allowed them to cover aspects such as material weight, dead loads, live traffic loads, wind, and temperature effects. By scrutinizing these factors, the design was crafted to surpass the standards mandated for extremely rare weather occurrences, like once-in-200-year events.

The Chengdu West First Bridge has a height-to-span ratio of approximately 1:6 and is raised to a height of 30 meters. The arches are connected at the base through longitudinal box girders that integrate road deck’s perimeter. This configuration effectively mitigating the horizontal pressures exerted on the bridge’s foundation.

Prefabrication played a huge role in the construction of this bridge. Girders were transported to the site and seamlessly connected to edge girders using bolted cover plate splices, while mobile cranes efficiently lifted prefab steelwork and concrete components. Traditional in-situ reinforced concrete methods were employed for constructing the bridge’s bored piles and abutments. Prefabricated steel box sections for each arch were carefully sized for transport and assembly on-site. Additionally, the road deck’s edge box girder sections, which house cable anchorages, were prefabricated and subsequently joined through on-site welding. This comprehensive approach resulted in an efficient and well-executed construction process.

The bridge will open to the public once the West Line Road is completed.

Zaha Hadid Architects’ Other Projects in China

Zaha Hadid Architects have multiple projects in China. They recently unveiled Daxia Tower which will be built in the Xi’an business district. They are also building the Jinghe New City Culture & Art Centre in Xi’an and an international sports centre in Hangzhou which includes an indoor arena with 19,000 seating capacity.

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