Twin towers anchor the Nanchang Greenland Central Plaza, Parcel A project in the capital of the Jiangxi Province. The identical towers, which stand 303m tall and 100m apart, are the tallest buildings in Nanchang and create a striking statement on the city’s developing skyline.
To achieve their organic shape, the towers’ square footprints parallel the street and rotate 45 degrees as they rise. Executed using parametric design, the scheme has the added functional benefit of optimizing access at grade and aligning office space to the Ganjiang River. The towers’ twisting frames are finished in cold-bent glass: each glass panel has been bent as much as 1.5 percent out of plane to achieve a consistent reflective, luminous appearance.
A freestanding canopy employing a complex cable-net support system foots each tower. Both skyscrapers also feature crowns of precisely spaced and angled glass panels. The design team conducted extensive research to determine how far to push each panel out of plane to ensure long-term durability and architectural soundness of the panels. Maximizing permeability in the prevailing wind direction to minimize wind loading at the base of the towers, the crown’s panels appear most dense in the dominant visual direction, visually dissolving the tower into the horizon.
Completed in 2015, the landmark skyscrapers anchor an emerging business, civic, and residential zone in Nanchang’s booming new city. The towers indicate that high-density living and working can be practical, sustainable and good for the planet.