SOM: zhengzhou greenland plaza
original content
jan 18, 2013
SOM: zhengzhou greenland plaza


‘zhengzhou greenland plaza’ by SOM, zenghzou, china
images courtesy of SOM

 

 

crowning the skyline of the emerging city of zhenghou, SOM‘s ‘zhengzhou greenland plaza’ uses scientifically derived mechanisms to provide the ideal
working conditions throughout the 60-storey office and hotel building. the circular structure was conceived as a column, alluding to the powerful classical symbol
but incorporates sophisticated systems that clearly define it’s intentions towards the future. sections of painted aluminum screens three to five stories tall
wrap the exterior envelope, separated one to two meters from the curtain wall. the state-of-the-art shades posses an outward cant that plays with the effect
of porosity depending on your proximity to the tower. more importantly, they allow views to the exterior while constantly protecting the glass skin from
direct sunlight and over excessive solar gain, at the same time engineered to reflect indirect light into the interior.  another innovative device is the heliostat
located on the top of the building. SOM’s design director ross wimer explains that ‘like the solar screening, the heliostat is a scientifically-derived element that
enhances the experience of daylight for the building’s users.’ the mechanism reflects light deep into the tower’s central atrium whose surface finishes further
assist in making sure the more centrally-located spaces receive natural light. a computer-controlled dimmer switch regulates the amount of light accepted into
the atrium to maintain a comfortable visual environment.

 

 


illuminated aluminum screens

 

 


tower stands as an icon for the city

 

 

 

 


the angle from which the tower is viewed reveals different transparencies

 

 


(left) central atrium
(right) aluminum louvers

 

 


interior office space

 

 


rooftop heliostat

 

 

project info:

 

 

floor area: 2.59 million ft2
program: offices on the lower floors, 416 room hotel above
height: 60 stories / 280 m / 919 ft
location: northeast zhengzhou

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