Chapter
Apr 26, 2012
Earthquake Resistant Design of Torsionally Coupled Structures using VFPI
Authors: Ravi Sinha and Pranesh MurnalAuthor Affiliations
Publication: Structures 2001: A Structural Engineering Odyssey
Abstract
The friction type base isolation systems have been found to be very effective in reducing the structural response, and several effective isolators have been proposed in the recent past. These isolators need to integrate base isolation, energy dissipation and restoring mechanism from practical considerations. In this paper, the effectiveness of a recently developed isolation system known as Variable Frequency Pendulum Isolator (VFPI) in controlling response of a torsionally coupled structure has been examined. The VFPI exhibits progressive period shift and softening mechanism of restoring force, and is found to be more effective isolation in comparison with some other friction-type isolation systems.
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© 2001 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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ASCE Technical Topics:
- Base isolation
- Continuum mechanics
- Coupling
- Dynamics (solid mechanics)
- Earthquake engineering
- Earthquake resistant structures
- Earthquakes
- Engineering mechanics
- Forces (type)
- Friction
- Geohazards
- Geotechnical engineering
- Seismic design
- Solid mechanics
- Structural engineering
- Structural members
- Structural systems
- Torsion
Authors
Affiliations
Ravi Sinha
M.ASCE
Associate Professor, Department of Civil Engineering, Indian Institute of Technology, Powai, Mumbai — 400 076, India
Pranesh Murnal
Former Graduate Student, Department of Civil Engineering, Indian Institute of Technology, Powai, Mumbai — 400 076, India
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.