Civil Engineering Reference
In-Depth Information
Figure 9.14
A visco-elastic damper
(Mahmoodi, 1969).
Figure 9.15
Hysteresis loop for visco-elastic
dampers.
The World Trade Center buildings in New York City were the first major structures to
utilize visco-elastic dampers (Mahmoodi, 1969). Approximately 10,000 dampers were
installed in each 110-storey tower, with about 100 dampers at the ends of the floor trusses
at each floor from the 7th to the 107th. More recently visco-elastic dampers have been
installed in the 76-storey Columbia Seafirst Center Building in Seattle, United States. The
