Seismic Response of Base-Isolated Reinforced Concrete Water Storage Tanks. Ii: Fps Isolation System


Abstract eng:
The analysis of the seismic response of base-isolated circular cylindrical reinforced concrete (RC) water storage tanks with lead rubber bearing (LRB) under uni- and bi-directional horizontal earthquake ground motion, described in a companion paper, is extended to frictional pendulum system (FPS). For the seismic analysis, tanks were considered to have a linear elastic behavior, the tank-water interaction was represented by an equivalent mechanical model, and the hysteretic behavior of the isolation system was represented by a bi-axial hysteretic restoring force model. The parameters of this study are: the water-height/tank-inner-radius ratio, the tank-wall-thickness/tank-inner-radius ratio, the target vibration period of the isolation system, and the friction coefficient of the isolation system. Twenty-one pairs of selected and scaled ground motions were used in time-history analysis of the case studies. The objective of this analysis was to study the effect of bidirectional ground motion as well as the effects of study parameters on seismic response of base-isolated RC water storage tanks. Seismic responses of base-isolated systems, when compared to fixed-base systems, show an effectiveness of FPS isolation system in the reduction of base shear values in the order of 71% to 92% for H/R = 0.5; of 84% to 97% for H/R =

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Conference Title:
Conference Title:
16th World Conference on Earthquake Engineering
Conference Venue:
Santiago (CL)
Conference Dates:
2017-01-09 / 2017-01-13
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 Record created 2017-01-18, last modified 2017-01-18


Original version of the author's contribution as presented on USB, paper 3577.:
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