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Simulation, Analysis and Design of Systems with Multiple Seismic Support Motion

Nizamiev, Kamil
http://orcid.org/0000-0001-9086-4328
http://rave.ohiolink.edu/etdc/view?acc_num=case1462884476

Abstract Details

2016, Doctor of Philosophy, Case Western Reserve University, Civil Engineering.
This work studies the seismic analysis and design of systems with multiple support motions. Examples of such structures are nuclear safety - related piping, bridges with widely spaced piers, pipelines and tunnels. Dynamic analysis of such systems is more elaborate than analysis of other general structures such as buildings, because it must consider the relationships among various support motions, or explicitly, the correlations between them. Herein, a method that models such correlations is presented. A time domain space state Markov vector approach is used to define a target covariance matrix of a vector random process and this matrix is used as a target for an AR simulation of correlated acceleration time histories. To provide a facility for experimental testing of multiply supported structures, a four-table seismic simulation system was designed, fabricated and tuned to have the ability of executing correlated multiply supported excitations. Features, performance curves, control and implementation details of the system are given as a manual for operation and testing. A review of existing problems and methods for analysis of nuclear piping systems is provided. A set of experiments is performed to evaluate responses of “stiff” and more “flexible” piping designs to correlated, response-spectrum-compatible support motions. These preliminary tests show effects of correlation on piping responses. Guidance is given on more comprehensive experiments needed to evaluate piping designs that are more “flexible”. The system of shaking tables proved to be fully functional. Linearized analytical and numerical models of “stiff” and “flexible” piping are defined. Analytical and numerical eigenvalues are compared. The numerical models are used for predicting responses and comparing these responses to experimental results. Necessary features of a nonlinear model that may be capable of predicting geometrically non-linear behavior of a hanger pipe support (self-weight support) are discussed.
Dario Gasparini, PhD (Advisor)
Brian Metrovich, PhD (Committee Member)
Wojbor Woyczynski, PhD (Committee Member)
Michael Pollino, PhD (Committee Member)
443 p.
Civil Engineering; Mechanical Engineering; Systems Design
Earthquake Engineering, Dynamic Analysis, Nuclear Piping Systems, Cascaded Systems with Multiple Supports, Correlated Support Motions, Multiple Shaking Table Systems

Recommended Citations

Citations

  • Nizamiev, K. (2016). Simulation, Analysis and Design of Systems with Multiple Seismic Support Motion [Doctoral dissertation, Case Western Reserve University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=case1462884476

    APA Style (7th edition)

  • Nizamiev, Kamil. Simulation, Analysis and Design of Systems with Multiple Seismic Support Motion. 2016. Case Western Reserve University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=case1462884476.

    MLA Style (8th edition)

  • Nizamiev, Kamil. "Simulation, Analysis and Design of Systems with Multiple Seismic Support Motion." Doctoral dissertation, Case Western Reserve University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=case1462884476

    Chicago Manual of Style (17th edition)

case1462884476
349
© 2016, all rights reserved.
This open access ETD is published by Case Western Reserve University School of Graduate Studies and OhioLINK.