2003–2009 | Beijing CHINA
Client Modern Group
Architect Steven Holl Architects
Structural Engineer Guy Nordenson and Associates
Associate Structural Engineer China Academy of Building Research
Awards 2009 CTBUH Best Tall Building Overall Award, 2008 NY AIA Sustainable Design Award
The project is a housing development for 644 apartments and a small hotel in eight interconnected towers. These are grouped around a central public space with a kindergarten, cinematheque and large reflecting pool. The buildings are about 30m by 30m in plan with concrete flat slabs spanning between both core and cross concrete shear walls and a perimeter concrete moment frame. The frame is a grid of uniform dimension interspersed with diagonal members. These diagonals occur on an ad hoc basis where required for building cantilevers, overhangs and overall stiffness. The buildings are linked by steel truss bridges placed in special “friction pendulum isolator”. The bridges are completely isolated, on all four supports, from the tower building movements. In an earthquake the bridges will move up to 40cm relative to the buildings, sparing them, and the buildings, of the effects of lateral forces.