Establishing absorbed energy spectra—an attenuation approach

Chung-Che Chou,

Chung-Che Chou

Department of Structural Engineering, University of California, San Diego, La Jolla, CA 92093, U.S.A.

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Chia-Ming Uang,

Corresponding Author

Chia-Ming Uang

[email protected]

Department of Structural Engineering, University of California, San Diego, La Jolla, CA 92093, U.S.A.

409 University Center, Department of Structural Engineering, University of California, San Diego, La Jolla, CA 92093-0085, U.S.A.Search for more papers by this author

Chung-Che Chou,

Chung-Che Chou

Department of Structural Engineering, University of California, San Diego, La Jolla, CA 92093, U.S.A.

Search for more papers by this author

Chia-Ming Uang,

Corresponding Author

Chia-Ming Uang

[email protected]

Department of Structural Engineering, University of California, San Diego, La Jolla, CA 92093, U.S.A.

409 University Center, Department of Structural Engineering, University of California, San Diego, La Jolla, CA 92093-0085, U.S.A.Search for more papers by this author

First published: 24 July 2000

https://doi.org/10.1002/1096-9845(200010)29:10<1441::AID-EQE967>3.0.CO;2-E

Citations: 67

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Abstract

For energy-based seismic design, energy demand in the form of absorbed energy spectra was established by an attenuation relationship. The absorbed energy is proposed for evaluating the energy demand in an inelastic system because the absorbed energy is directly related to the pseudo-velocity in the elastic case. Based on a total of 273 ground motion records from 15 significant earthquakes in California, an attenuation relationship of the absorbed energy was established from a two-stage non-linear regression analysis. This relationship was established for a given earthquake magnitude, source-to-site distance, site class, and ductility factor. A similar expression for the normalized absorbed energy was also developed. This study showed that the absorbed energy for near-field ground motions can be significantly larger than that predicted by the attenuation relationship for normal ground motions. Copyright © 2000 John Wiley & Sons, Ltd.

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Volume29, Issue10

October 2000

Pages 1441-1455

Establishing absorbed energy spectra—an attenuation approach

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Establishing absorbed energy spectra—an attenuation approach

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