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Article

Efficiency of Intensity Measures Considering Near- and Far-Fault Ground Motion Records

1
Department of Civil and Environmental Engineering, Polytechnic University of Catalonia (UPC), Building D2, 08034 Barcelona, Spain
2
Departmento de Ingeniería Civil, Universidad Nacional de Colombia
*
Author to whom correspondence should be addressed.
Academic Editors: Maria D’Amico, Chiara Smerzini and Jesus Martinez-Frias
Geosciences 2021, 11(6), 234; https://doi.org/10.3390/geosciences11060234
Received: 6 January 2021 / Revised: 27 April 2021 / Accepted: 19 May 2021 / Published: 30 May 2021
(This article belongs to the Special Issue Engineering Analysis of Near-Source Strong Ground Motion)
This paper focuses on the identification of high-efficiency intensity measures to predict the seismic response of buildings affected by near- and far-fault ground motion records. Near-fault ground motion has received special attention, as it tends to increase the expected damage to civil structures compared to that from ruptures originating further afield. In order to verify this tendency, the nonlinear dynamic response of 3D multi-degree-of-freedom models is estimated by using a subset of records whose distance to the epicenter is lower than 10 km. In addition, to quantify how much the expected demand may increase because of the proximity to the fault, another subset of records, whose distance to the epicenter is in the range between 10 and 30 km, has been analyzed. Then, spectral and energy-based intensity measures as well as those obtained from specific computations of the ground motion record are calculated and correlated to several engineering demand parameters. From these analyses, fragility curves are derived and compared for both subsets of records. It has been observed that the subset of records nearer to the fault tends to produce fragility functions with higher probabilities of exceedance than the ones derived for far-fault records. Results also show that the efficiency of the intensity measures is similar for both subsets of records, but it varies depending on the engineering demand parameter to be predicted. View Full-Text
Keywords: near-fault records; far-fault records; intensity measures; engineering demand parameters; nonlinear dynamic analysis; uncertainties near-fault records; far-fault records; intensity measures; engineering demand parameters; nonlinear dynamic analysis; uncertainties
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MDPI and ACS Style

Vargas-Alzate, Y.F.; Hurtado, J.E. Efficiency of Intensity Measures Considering Near- and Far-Fault Ground Motion Records. Geosciences 2021, 11, 234. https://doi.org/10.3390/geosciences11060234

AMA Style

Vargas-Alzate YF, Hurtado JE. Efficiency of Intensity Measures Considering Near- and Far-Fault Ground Motion Records. Geosciences. 2021; 11(6):234. https://doi.org/10.3390/geosciences11060234

Chicago/Turabian Style

Vargas-Alzate, Yeudy F., and Jorge E. Hurtado 2021. "Efficiency of Intensity Measures Considering Near- and Far-Fault Ground Motion Records" Geosciences 11, no. 6: 234. https://doi.org/10.3390/geosciences11060234

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