Numerical Study on Seismically Isolated Elevated Water Tanks


Abstract eng:
In this study, the applicability of seismic isolation using lead-rubber and elastomeric bearings to conical elevated tanks is investigated. The effect of seismic isolation on dynamic response of such tanks is investigated by performing finite element (FE) time-history analyses on various models. The proposed FE method is capable of simulating the accurate threedimensional behaviour of the isolated tanks involving the nonlinear hysteretic behaviour of seismic isolators. Through this study, the effects of different parameters on the effectiveness of the seismic isolation system are investigated. The examined parameters include: lateral versus vertical isolation, locations of isolators, shaft stiffness, and tank aspect ratio. It is concluded that the application of passive control devices to conical elevated water tanks could offer a substantial benefit for the earthquake-resistant design of such structures. The obtained results further show that the magnitude and distribution of seismically induced forces, moments and displacements could be controlled through appropriate selection of device properties, isolators’ locations, and tank’s structural and geometrical characteristics.

Contributors:
Conference Title:
Conference Title:
16th World Conference on Earthquake Engineering
Conference Venue:
Santiago (CL)
Conference Dates:
2017-01-09 / 2017-01-13
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.



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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 1188.:
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