67% less Steel used in lotus inspired Hangzhou Olympic Stadium

67% less Steel used in lotus inspired Hangzhou Olympic Stadium

NBBJ, the Global firm has completed a new Olympic sports center, Hangzhou Sports Park, using 67 percent less steel than Beijing’s National Stadium (the Bird’s Nest). The firm, in partnership with CCDI, designed the sports center on a 400,000-square-meter site on the Qian Tang riverfront opposite the city’s new Central Business District.

The design is inspired by iconic lotus flower found in the area, through its lotus-petal design.

The main stadium broke ground in 2011, and the entire complex is slated for completion in time for the 2022 Asian Games.

The Sports Center prioritizes human experience and sustainability efforts to be able to use less steel in construction based on a model energy performance, and the stadium creates flexibility in which the design team employed computational scripts. 

The site plan is composed of three layers of activity. An above-grade platform defines the “sports boulevard,” which links programs such as the main stadium and tennis tournament facilities together. On the ground level, pathways, gardens, and plazas form a network of public recreation activities designed for alternative and extreme sports.

Sunken spaces and courtyards lead to an extensive below-grade retail pavilion containing boutique stores, restaurants, and a multiplex cinema.

NBBJ used parametric modeling to reduce steel in two ways. They are linking the steel shell and concrete bowl together at each level so the two systems work in unison. They have also provided additional structure at the top of the bowl to reduce the roof cantilever. 


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