Abstract
Responses of base-isolated shear beam type structures subject to random ground excitations are studied. Several base isolation systems, including the laminated rubber bearing, the resilient-friction base isolator with and without sliding upper plate, and the EDF system, are considered. Stationary and nonstationary stochastic models for earthquake ground accelerations are considered and the method of time-dependent equivalent linearization in conjunction with moments of the Fokker-Planck equation are used for response analysis. Mean-square statistics of the base raft displacement and the absolute acceleration at the roof of the base-isolated structure are evaluated. A series of parametric studies are also carried out. Comparisons of the results with those for the fixed-base structure show that base isolation systems are, in general, highly effective in reducing mean-square responses of the superstructure. The advantages and disadvantages of various base isolation systems are also discussed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
