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The unfolding lotus flower of Hangzhou

While stadiums packed with people aren’t exactly the image we’re all looking for right now we know that one day they will be filled again. In Hangzhou the latest 80,000 capacity stadium by NBBJ is a beautiful example of the clever and beautiful architecture possible with these public spaces.

The unfolding lotus flower of Hangzhou

When designing an 80,000-capacity stadium in the Chinese city of Hangzhou, US-headquartered NBBJ took the unfolding petals of a local lotus flower as inspiration for a sustainable design that uses one third of the steel a stadium of its size would usually require. The surrounding park and sports facilities are landscaped to blend with its riverside location and keep buildings at ambient temperature. 

The ancient city of Hangzhou is famed for its beautiful West Lake which is home to lotus flowers and cherry blossoms and backed by stunning pagoda-topped mountains. “The stadium draws upon this beauty by using the indigenous water lily (also called a lotus) of the West Lake as its conceptual inspiration, and then interpreting the form into a series of modular “petal” structures that gracefully surround the stadium” designers say.

But, Hangzhou has also seen rapid urbanization and has tripled in size in just 10 years. As such, NBBJ designers set about creating a park, which includes a smaller 10,000 capacity tennis stadium, other sports facilities and subterranean shopping mall and cinema, which is as sustainable as possible. NBBJ lightened the stadium’s footprint by using parametric scripting to craft a building that uses 40% of the amount of steel used to construct the similar-sized Bird’s Nest Stadium in Beijing.

Concrete bowls at the base of the building create the stadium’s seating. These let spectators sit as close to the action (primarily football matches) as possible and link to the petal-shaped outer shell. NBBJ also designed the building to have an independent roof structure above the outer petals. This reduces the need for a roof cantilever on the main frame. The result is an aesthetically pleasing series of giant petals that overlap and curl around the central seating structure to create the stadium’s shape.

The stadium itself opens to the surrounding park of tree-lined walkways, lawns, sunken courtyards and leisure facilities on three levels. It links to subterranean parking and shopping below, to the landscaped park on ground level and to elevated platforms and walkways on the floors above. In another bid for sustainability, NBBJ created adjacent spaces that can be used by the public even on non-match days. Crucially, the surrounding landscaped park is designed to avoid becoming a “heat island” which makes overdeveloped, often concrete, areas significantly hotter than their surroundings. “The overall planning of the complex makes use of porous, light coloured surfaces and green park spaces with maximum vegetation” say designers.


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