NDLI: Design of Visco-Elastic Dampers for RC Frame for Site-Specific Earthquake

Content Provider	Springer Nature Link
Author	Rama Raju, K. Kamatchi, P. Ravisankar, K. Iyer, Nagesh R.
Copyright Year	2016
Abstract	Number of Reinforced Concrete (RC) framed buildings have got damaged at Ahmedabad city, India located at about 240 km away from epicenter during January 2001, 7.6 moment magnitude (M$_{w}$) Bhuj earthquake. In the present study, two dimensional nonlinear time history dynamic analyses of a typical 13 storey frame assumed to be located at Ahmedabad is carried out with the rock level and surface level site-specific ground motion for scenario earthquake of M$_{w}$ 7.6 from Bhuj. Artificial ground motions are generated using extended finite source stochastic model with seismological parameters reported in literature for 2001 Bhuj earthquake. Surface level ground motions are obtained for a typical soil profile of 100 m depth reported in literature through one dimensional equivalent linear wave propagation analyses. From the analyses, failure of frame is observed for surface level ground motions which indicates that, in addition to the in-adequacy of the cross sections and reinforcement of the RC members of the frame chosen, the rich energy content of the surface level ground motion near the fundamental time period of the frame has also contributed for the failure of frame. As a part of retrofitting measure, five Visco-elastic Dampers (VED) in chevron bracing are added to frame. For the frame considered in the present study, provision of VED is found to be effective to mitigate damage for the soil site considered.
Starting Page	359
Ending Page	366
Page Count	8
File Format	PDF
ISSN	22502149
Journal	Journal of The Institution of Engineers (India): Series A
Volume Number	97
Issue Number	4
e-ISSN	22502157
Language	English
Publisher	Springer India
Publisher Date	2016-11-01
Publisher Place	New Delhi
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Visco-elastic dampers Site-specific earthquake Civil Engineering Bhuj earthquake Inelastic damage analysis
Content Type	Text
Resource Type	Article
Subject	Building and Construction Architecture Mechanical Engineering Agricultural and Biological Sciences Civil and Structural Engineering

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