Earthquakes and Structures

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Telescopic columns as a new base isolation system for vibration control of high-rise buildings

  • Hosseini, Mahmood (Structural Engineering Research Center, International Institute of Earthquake Engineering and Seismology (IIEES)) ;
  • Farsangi, Ehsan Noroozinejad (Structural Engineering Research Center, International Institute of Earthquake Engineering and Seismology (IIEES))
  • Received : 2012.04.02
  • Accepted : 2012.06.19
  • Published : 2012.12.25
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Abstract

In this paper, a new type of passive energy dissipating system similar to added damping and stiffness (ADAS) and triangular added damping and stiffness (TADAS) is proposed and implemented in the analytical model of a building with hybrid structural system in the structure's base which we call it; Telescopic column. The behavior and performance of a high rise R.C. structure equipped with this system is investigated and compared with conventional base isolation systems such as rubber isolator bearings and friction pendulum bearings. For this purpose a series of ground acceleration records of the San Fernando, Long Beach and Imperial Valley earthquakes are used as the disturbing ground motions in a series of numerical simulations. The nonlinear numerical modeling which includes both material and geometric nonlinearities were carried out by using SAP2000 program. Results show suitable behavior of structures equipped with telescopic columns in controlling the upper stories drifts and accelerations.

Keywords

References

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