Rustem_Thesis - STRUCTURAL DAMAGE EVALUATION: THEORY AND...

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STRUCTURAL DAMAGE EVALUATION: THEORY AND APPLICATIONS TO EARTHQUAKE ENGINEERING Thesis by Rustem Shaikhutdinov In Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy Report No. EERL 2004-06 California Institute of Technology Pasadena, California 2004 (Defended February 17, 2004)
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ii © 2004 Rustem Shaikhutdinov All Rights Reserved
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iii Acknowledgments My sincere gratitude goes to my adviser Professor James L. Beck for his direction and encouragement throughout the course of this investigation. Without his invaluable guidance and support, this thesis would not have been possible. I am also truly grateful to Keith A. Porter for the suggestions and input that were most helpful. I am thankful for the delightful time we spent working together. I truly appreciate the time and input of Professors Wilfred D. Iwan, John F. Hall in reviewing my thesis and delegating their time to serve on my thesis examination committee. It has been a really enriching experience to be their student, as well. My studies were financially supported by funds from California Institute of Technology; California Universities for Research in Earthquake Engineering under the CUREe-Kajima joint research program, Phase IV; the Earthquake Engineering Research Centers Program of the National Science Foundation under Award Number EEC- 9701568 through the Pacific Earthquake Engineering Research Center (PEER). These supports are gratefully acknowledged. Any opinions, findings and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect those of the support providers. I am thankful to Carolina Oseguera and Connie Yehle for always being so thoughtful and supportive throughout all the years of my staying at Caltech. My special thanks go out to my lovely wife Julia, who gave me strength and determination to pursue on the road of research and instilled my days with joy and happiness.
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iv Abstract The further development of performance-based earthquake engineering (PBEE) is on the current agenda of the earthquake engineering community. A part of assessing the seismic performance of civil engineering structures involves estimation of seismic damage. The conventional approach to damage estimation is based on fragility functions that relate some chosen parameters of structural response to incurred damage. Therefore, damage prediction is based exclusively on the knowledge of the chosen structural response parameters, meaning that damage analysis is uncoupled from the structural analysis. The structural response parameters selected for use in damage analysis are usually referred to as engineering demand parameters ( EDP ). In the present study, it is shown that for structural damage estimation, the uncoupled damage analysis has deficiencies that lead to less accurate damage prediction. These shortcomings originate from two sources: first, dependence of practically all EDP s on structural damage and second, inexact damage description. To overcome these deficiencies, another approach to structural damage
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Rustem_Thesis - STRUCTURAL DAMAGE EVALUATION: THEORY AND...

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