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System Identification of a Three-Story Precast Concrete Parking Structure

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Topics in Dynamics of Civil Structures, Volume 4

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Abstract

A half-scale, three-story, precast concrete building resembling a parking garage was tested on the UCSD-NEES shake-table in May–July of 2008. This was the capstone test of a multi-university/industry research project aimed at the development of seismic design guidelines for precast concrete diaphragms. The shake-table tests were designed to induce damage on the building progressively through earthquake records of increasing intensity. Low-amplitude white-noise base excitations as well as scaled earthquake tests were performed between large-amplitude earthquake records. In this study, modal parameters of the test structures are identified using a deterministic-stochastic subspace identification method based on low-amplitude as well as high-amplitude seismic test data. The changes in the identified modal parameters are compared to the progressive damage of the building. Reduction of the identified natural frequencies and increase of the damping ratios indicate loss of stiffness and development/propagation of cracks, while the changes in the mode shapes point to the location of damage.

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References

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Acknowledgements

The authors wish to express their gratitude to the Precast/Prestressed Concrete Institute, the National Science Foundation, the Charles Pankow Foundation, and the George E. Brown Jr. Network for Earthquake Engineering Simulation. The first author greatly acknowledges the financial support of Fondazione Cariplo (Bergamo – Italy) under the FYRE mobility program. The opinions, findings, and conclusions expressed in the paper are those of the authors and do not necessarily reflect the views of the individuals and organizations involved in this project.

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Authors and Affiliations

  1. Department of Engineering, University of Bergamo, Bergamo, Italy

    Andrea Belleri

  2. Department of Civil and Environmental Engineering, Tufts University, Medford, MA, USA

    Babak Moaveni

  3. Department of Structural Engineering, University of California, San Diego, CA, USA

    Jose I. Restrepo

Authors
  1. Andrea Belleri
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  2. Babak Moaveni
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  3. Jose I. Restrepo
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Corresponding author

Correspondence to Babak Moaveni .

Editor information

Editors and Affiliations

  1. , Engineering Department, University of Central Florida, Central Florida Blvd. 4000, Orlando, 32816-2450, Florida, USA

    Fikret Necati Catbas

  2. , Department of Civil and Envt. Eng., Lehigh University, ATLSS Drive, Imbt Labs 117, Bethlehem, 18015, Pennsylvania, USA

    Shamim Pakzad

  3. , Department of Civil and Structural Eng., University of Sheffield, Mappin Street, Sheffield, S1 3JD, United Kingdom

    Vitomir Racic

  4. , Department of Civil and Structural Eng., University of Sheffield, Mappin Street, Sheffield, S1 3JD, United Kingdom

    Aleksandar Pavic

  5. , Department of Civil and Structural Eng., University of Sheffield, Mappin Street, Sheffield, S1 3JD, United Kingdom

    Paul Reynolds

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© 2013 The Society for Experimental Mechanics, Inc.

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Belleri, A., Moaveni, B., Restrepo, J.I. (2013). System Identification of a Three-Story Precast Concrete Parking Structure. In: Catbas, F., Pakzad, S., Racic, V., Pavic, A., Reynolds, P. (eds) Topics in Dynamics of Civil Structures, Volume 4. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-6555-3_33

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  • DOI: https://doi.org/10.1007/978-1-4614-6555-3_33

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  • Publisher Name: Springer, New York, NY

  • Print ISBN: 978-1-4614-6554-6

  • Online ISBN: 978-1-4614-6555-3

  • eBook Packages: EngineeringEngineering (R0)

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