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Introducing a response-based duration metric and its correlation with structural damages

Mashayekhi, M ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1007/s10518-019-00716-y
  3. Publisher: Springer Netherlands , 2019
  4. Abstract:
  5. This study proposes a response-based parameter for strong motion duration which is computed for structures and is the total time they are nonlinear during an earthquake. Correlation between structural response and duration for structures, subjected to a set of spectrum matched ground motions, is employed to examine the efficiency of the proposed method. The spectral matching procedure ensures that the influence of amplitude and frequency content of motions on structural response variability is significantly removed. Four concrete building type systems are studied and correlation coefficients of structural response with the proposed duration definition are examined. Comparison of the proposed method with other existing definitions—the record-based and response-based metrics—shows about 15–20% improvement in the correlation values. © 2019, Springer Nature B.V
  6. Keywords:
  7. Nonlinear dynamic analysis ; Park–Ang damage index ; Reinforced concrete structures ; Spectral matching ; Strong ground motion duration ; Concrete buildings ; Damage detection ; Dynamics ; Earthquake effects ; Reinforced concrete ; Seismic response ; Wavelet analysis ; Correlation coefficient ; Damage index ; Frequency contents ; Spectral matchings ; Strong ground motion ; Strong motion duration ; Structural damages ; Structural response ; Time and motion study ; Amplitude ; Concrete structure ; Correlation ; Damage mechanics ; Dynamic response ; Index method ; Nonlinearity ; Strong motion
  8. Source: Bulletin of Earthquake Engineering ; Volume 17, Issue 11 , 2019 , Pages 5987-6008 ; 1570761X (ISSN)
  9. URL: https://link.springer.com/article/10.1007/s10518-019-00716-y