Seismic Response of a Typical Shear-Wall Dominated High-Rise Condominium Building during the January 7, 2020, Indios, Puerto Rico Earthquake
Publication: Journal of Structural Engineering
Volume 147, Issue 12
Abstract
Seismic response records were retrieved from the monitored 21-story (53.26-m-tall) typical Puerto Rican reinforced-concrete shear-wall dominated El Castillo Building in Mayaguez, 50 km from the mainshock epicenter of the January 7, 2020, offshore Indios, Puerto Rico earthquake. The shear-wall-to-floor areas of the building are 0.97 and 3.49 in the longitudinal and transverse directions, respectively, and have a slenderness ratio of 3.0 in the transverse direction. Basement and top-floor peak accelerations were 5% g and 12.8% g, respectively. Additionally, records from a nearby free-field station indicate a site period of 0.16 s. No visible damage was observed in the building after the earthquake. Spectral ratios and system identification allow identification of the transverse, longitudinal, and torsional fundamental periods as 0.97, 0.88, and 0.81 s, respectively, and are consistent with ASCE/SEI 7-16 (2017) formula. Damping percentages are 4.5%, 3.4%, and 2.2%, respectively. The maximum drift ratios are 0.20% and 0.12% in the longitudinal and transverse directions, well below the damage threshold for structural elements of .
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request, including:
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The El Castillo Building (Station B03L) and Mayaguez Club de Oficinistas II (Station MY12) (Free-field station), M6.4 Indios, Puerto Rico Earthquake on January 7, 2020 event data are available directly from https://www.strongmotioncenter.org/index.html or from the corresponding author upon reasonable request; and
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MY12 Free-field data for 2010, 2011, 2014 events in Table 3: Data Center of Puerto Rico Strong Motion Project (PRSMP), available at http://www.prsmp.uprm.edu/prsmp2/, from coauthor Jose Martinez-Cruzado ([email protected]), or from the corresponding author upon reasonable request.
Acknowledgments
Drs. Juan Alicea, Carlos H. Hurtado, Angel Alicea, and Carlos I. Huerta Lopez provided important information about the buildings discussed in this study. Similarly, the authors are grateful to Prof. Pablo Heresi and Mr. Juan M. Navarro, who conducted initial system identification of the building using modal minimization technique. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the US Government.
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Published In
Journal of Structural Engineering
Volume 147 • Issue 12 • December 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Feb 17, 2021
Accepted: Aug 10, 2021
Published online: Sep 30, 2021
Published in print: Dec 1, 2021
Discussion open until: Feb 28, 2022
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