Seismic Performance of Sliding Type Isolation with Variable Friction
M. J. Chauhan, SVIT; D. P. Soni ,SVIT
Base Isolation, Variable Friction Pendulum System, Near Fault Ground Motions, Friction Pendulum System, and Friction Coefficient
The seismic response of shear type multi storey building isolated with variable friction pendulum system (VFPS) is investigated under horizontal component of near fault ground motion motions and artificial accelarogram. The VFPS, an advanced sliding type isolator, is proposed as an alternative for FPS. The governing equation of motion of building isolated with VFPS are derived and solved in the incremental form by using Newmark’s (step-by-step) Beta method assuming linear variation of acceleration of the VFPS over small time interval, as the force-deformation behaviour of the VFPS is non-linear. To verify the effectiveness of VFPS, seismic performance of friction pendulum system (FPS) is compared with the same building isolated by FPS.
-
[1] Calvi P.M. and Ruggiero D. [2015] “Numerical Modeling of Variable Friction Base Isolators”, Bulletin of Earthquake Engineering, 14(2), 549568.
[2] Calvi P.M. et al [2016],”Seismic isolation devices based on sliding between surfaces with variable friction coefficient”, Earthquake Spectra 2016; 32(4):2291–315.
[3] Calvi P.M. and Calvi G.M. [2018] “Historical development of friction-based seismic isolation systems,” Soil Dynamics and Earthquake Engineering 106, 14-30.
[4] Murnal P. and Sinha R. [2000] “VFPI: an isolation device for a seismic design”, Earthquake Engineering and Structural Dynamics 29, 603-627.
[5] Panchal V.R. and Jangid R.S. [2008] “Variable friction pendulum system for near-fault ground motions,” Structural Control Health Monitoring 15(4), 568584.1545-2263.
[6] Timsina S. and Calvi P.M. [2018],“Damping properties of variable friction base isolation systems.” 16th European Conference on Earthquake Engineering, June 18–21 2018, Thessaloniki Greece.
Paper ID: GRDCF012031
Published in: Conference : Emerging Research and Innovations in Civil Engineering
Page(s): 145 - 150
Published in: Conference : Emerging Research and Innovations in Civil Engineering
Page(s): 145 - 150