Type of Document Dissertation Author Velasco, Cesar A. Morales Author's Email Address firstname.lastname@example.org URN etd-254122839711171 Title Substructure Synthesis Analysis and Hybrid Control Design for Buildings under Seismic Excitation Degree PhD Department Engineering Science and Mechanics Advisory Committee
Advisor Name Title Heller, Robert E. Singh, Mahendra P. Thangjitham, Surot VanLandingham, Hugh F. Meirovitch, Leonard Committee Chair Keywords
- substructure synthesis
- base isolation
- structural control
- hybrid control
- earthquake engineering
Date of Defense 1997-04-18 Availability unrestricted AbstractWe extend the application of the substructure synthesis method to more complex
structures, and establish a design methodology for base isolation and active
control in a distributed model of a building under seismic excitation. Our
objective is to show that passive and active control complement each other in
such an advantageous manner for the case at hand, that simple devices for both
types of control are sufficient to achieve excellent response characteristics with
very low control forces.
The Rayleigh-Ritz based substructure synthesis method proved to be highly
successful in analyzing a structure more complex than the ones previously
analyzed with it. Comparing the responses of the hybridly controlled building
and the conventional fixed building under El Centro excitation, we conclude that
the stresses are reduced by 99.6 %, the base displacement is reduced by 91.7 %
and the required control force to achieve this is 1.1 % of the building weight.
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