The Greenland Towers soar 284 meters into the sky above Zhengzhou metropolis in eastern China. The sil- houettes of the towers are characterized by the sky lobbies, recesses that are inserted offset at various levels. Designed as public spaces in the vertical, the sky lobbies are prestigious amenity areas for the offices, providing the unusual experience of being able to enjoy an outside terrace at a height of up to 240 meters. In total, the Greenland Central Plaza complex, which was built to plans by Architects von Gerkan, Marg and Partners (gmp), comprises about 746,000 square meters of gross floor area.
International competition 2010—1st prize
Design Meinhard von Gerkan and Stephan Schütz with Nicolas Pomränke
Competition project management Niklas Veelken
Competition design team Jan Deml, Amelie Neusen, Michael Reiss, Susan Schwarz, Sabine Stage, Jochen Sültrup, Thilo Zehme, Zhou Bin
Detail design project management Niklas Veelken, Jens Weiler
Detail design team Markus Busch, Cao Ping, Chen Lan, Chen Yue, Andrew Davis, Jan Deml, Christian Dorndorf, Johannes Erdmann, Kuno von Häfen, Boyan Kolchakov, Lin Lin, Fernando Nassare, Kristin Schoyerer, Elsa Tang, Thilo Zehme, Zhou Bin
Project management China Li Ling
Partner practice in China TJADRI Group, Co., Ltd., Shanghai
Structural design schlaich bergermann partner GmbH, Stuttgart
Facade consultants MAE, Meiss Architecture & Engineering Office
Landscape design WES und Partner, Berlin
Lighting design conceptlicht GmbH, Traunreut
Elevator consultants Parsons Brinckerhoff Engineering Technology Co. Ltd., Peking
Client Zhongyuan Real Estate Business Department of Shanghai Greenland Group
GFA 746,000 m2
Zhengzhou, the capital of Henan Province, is experiencing ongoing growth. According to current estimates, the metropolis on the Yellow River will have over 11 million inhabitants by 2020. In order to prepare for this development, a new railway station has been built in recent years to the east of the city to create a central traffic interchange. The new buildings by gmp close off an urban design axis to the west, an axis that leads from the new railway station towards the city center. Like an entrance door to the city, the high-rise buildings form a vertical counterpoise to the horizontal building of the railway station. A plaza between the towers forms a linking element. Owing to their height of 284 meters, the twin towers are significantly higher than the other high-rise buildings in the vicinity and, as identity-creating buildings in the skyline of Zhengzhou, are visible from afar.
The 63 stories of the Greenland Towers accommodate mostly offices. One tower comprises about 232,000 square meters—a comparatively large area for a high-rise building of this height, which is due to the very large area per floor of 4,000 square meters. This makes it possible to flexibly divide the floor area of each floor into up to 15 units. At their base, both towers have to their side L-shaped plinth buildings that accommodate commercial functions. By separating the towers from the plinth buildings, there is unrestricted access to the lobbies of the towers from all sides. Almost 12,000 people cross the foyer of each tower every day on their way to the upper floors.
In plan, the layout of the towers has been arranged offset in windmill fashion around the square core of the building. All offices benefit from natural ventilation via concealed openings in the facade profiles. With the sky lobbies on every eighth floor, the office towers have prestigious areas in the vertical that can be used in many different ways by the local companies. An unusual feature in a high-rise building of this size is that the employees are given the opportunity to use an outside terrace at high level and, from here, to enjoy the view across the cityscape of Zhengzhou. The top stories of the Greenland Towers accommodate the eight-story Sky Atrium, which is reserved for exclusive functions: the co-called “Sky Commerce” with restaurants, shops, and a spa extends across three floors next to the atrium. Luxurious offices in the north tower and exclusive club facilities and apartments in the south tower make up the uppermost floors of the towers. With the Sky Atrium, an attractive public venue has been created for art exhibitions and concerts, thus enriching vertical urban life in China with a new attraction at a height of 240 meters.< Freiräume in der Vertikalen