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Three-Dimensional Analysis of Base-Isolated Structures

Roke, David Alan (2005) Three-Dimensional Analysis of Base-Isolated Structures. Master's Thesis, University of Pittsburgh. (Unpublished)

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Base isolation has become a widely accepted method for earthquake resistant design of structures. However, the research in the field has been generally restricted to one-dimensional motion. Structural response is not limited to this one-dimensional motion, and the torsional effect of multidimensional motion contributes to the horizontal displacements. A three-dimensional structure can not be modeled with multiple one-dimensional analyses; rather, a complete three-dimensional analysis must be undertaken, as shown in this study.Four separate analyses for the calculation of the dynamic response of a base-isolated structure will be presented in this study. The first two analysis procedures are for a single-story base-isolated structure. The last two procedures are for a multi-story base-isolated structure. The first procedure for each structure assumes a fully linear response, in which the bearings and the superstructure remain in the linear elastic range of response. The second procedure allows for a non-linear response from the bearings, in which each individual bearing may yield, changing the effective stiffness value.The structural response for each of these cases will be calculated using computer analysis and compared with one another and also with a single-degree of freedom system. The results will be discussed at the end of this study.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
Roke, David
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairTorkamani, Morteza A. Mtorkmani@pitt.eduTORKMANI
Committee MemberEarls, Christopher
Committee MemberHarries, Kent Akharries@engr.pitt.eduKHARRIES
Date: 14 October 2005
Date Type: Completion
Defense Date: 27 July 2005
Approval Date: 14 October 2005
Submission Date: 25 July 2005
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Institution: University of Pittsburgh
Schools and Programs: Swanson School of Engineering > Civil and Environmental Engineering
Degree: MSCE - Master of Science in Civil Engineering
Thesis Type: Master's Thesis
Refereed: Yes
Uncontrolled Keywords: base isolation; seismic design; structural dynamics
Other ID:, etd-07252005-104040
Date Deposited: 10 Nov 2011 19:53
Last Modified: 15 Nov 2016 13:46


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