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On the Applicability of Fixed Point Theory to the Design of Coupled Core Walls

Hull, Daniel (2006) On the Applicability of Fixed Point Theory to the Design of Coupled Core Walls. Master's Thesis, University of Pittsburgh. (Unpublished)

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Coupled core walls offer an efficient lateral load resisting system. Due to their exceptional stiffness (many times greater than the sum of the component wall piers), coupled core wall structures are especially attractive in earthquake-resistant settings. Current design practice does not address dynamic properties of the structure, in particular the optimization of the coupling beams. The coupling beams affect both the "static" (stiffness) and dynamic performance of the structure to varying degrees depending on their damping and stiffness properties. Fixed Point Theory is applied to find optimal damping and stiffness values for beams coupling two wall pier structures. In this initial investigative work, "performance" is defined in a novel way: as the practical minimization of transmissibility of horizontal ground motion. An initial parametric study applies fixed point theory optimization to a series of 84 sets of wall piers. From this parametric study, two prototype structures are advanced and analyzed using linear time history analyses to assess their performance in a simulated earthquake. These "optimized" structures are compared to practical, uncoupled, and rigidly linked systems to determine the validity of the application of Fixed Point Theory to the choice of coupling beam properties.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairHarries, Kent A.kharries@engr.pitt.eduKHARRIES
Committee MemberOyler, Johnoyler@engr.pitt.eduOYLER1
Committee MemberTorkamani, Mortezatorkmani@pitt.eduTORKMANI
Date: 2 June 2006
Date Type: Completion
Defense Date: 4 April 2006
Approval Date: 2 June 2006
Submission Date: 21 March 2006
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: Optimization; Coupled Core Walls; Fixed Point Theory
Other ID:, etd-03212006-091746
Date Deposited: 10 Nov 2011 19:32
Last Modified: 15 Nov 2016 13:37


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