Seismic Base Isolation using Shape Memory Alloy

Burhanuddin H. Adenwala, Sardar Vallabhbhai Patel Institute of Technology; Devesh P. Soni ,Sardar Vallabhbhai Patel Institute of Technology

Base Isolation, Earthquake, High Damping Rubber Bearings, Shape Memory Alloy

The supplementation of shape memory alloy (SMA) to rubber bearing has been propounded to be a greater alternative to the conventional high damping rubber bearings (HDRB) under near-fault earthquakes. A comparison between responses of a building subjected to HDRB without SMA and with SMA is demonstrated for near-fault, far-fault and fling type of ground motions. The present study substantiates the significant reduction in the residual base isolator displacement and base shear of a multi storeyed building when subjected to SMA supplemented HDRB isolator under considered ground motions.
    [1] Anderson TL, Bachman RE, Grant PR (1992) Base isolation response to extreme ground motions. Proceedings of the Tenth World Conference of Earthquake Engineering, Madrid, Spain: 19-24. [2] Berton S, Infanti S, Castellano MG, Hikosaka H (2007) Self-centering capacity of seismic isolation systems. Structural Control and Health Monitoring: 895–914. [3] Dezfuli FH, Alam,MS (2013) Shape memory alloy wire based smart natural rubber bearing. Smart Material Structures. [4] Ghodke S, Jangid RS (2016) Influence of high austenite stiffness of shape memory alloy on the response of base isolated benchmark building. Structural Control and Health Monitoring. [5] Ghodke S, Jangid RS (2016) Equivalent linear elastic-viscous model of shape memory alloy for isolated structures. Advances in Engineering Software 9:1-8. [6] Gur S, Mishra SK, Chakraborty S (2014) Performance assessment of buildings isolated by shape memory alloy rubber bearing: Comparison with elastomeric bearing under near-fault earthquakes. Structural Control and Health Monitoring 21:449-465. [7] Jangid RS, Datta TK (1995) Seismic behaviour of base-isolated buildings: a state-of-the-art review. Structures and Buildings: 186–202. [8] Jangid RS, Kelly JM (2001) Base isolation for near fault motions. Earthquake Engineering and Structural Dynamics: 691–707. [9] Kalkan E and Kunnath SK (2006) Effects of fling step and forward directivity on seismic response of buildings. Earthquake spectra 22:367-390. [10] Matsagar VA, Jangid RS (2003) Seismic response of base-isolated structures during impact with adjacent structures. Engineering Structures: 1311–1323. [11] Ozbulut OE, Hurlebaus S, Desroches R (2011) Seismic response control using shape memory alloys: a review. Intelligent Material Systems and Structures 22:1531-1549.
Paper ID: GRDCF012034
Published in: Conference : Emerging Research and Innovations in Civil Engineering
Page(s): 162 - 166