Assessment of expected damage on buildings subjected to Lorca earthquake through an energy-based seismic index method and nonlinear dynamic response analyses

Benavent Climent, Amadeo and Escobedo Ruiz, Alberto and Donaire Ávila, Jesús and Oliver Saiz, E. and Ramírez Márquez, A.L. (2014). Assessment of expected damage on buildings subjected to Lorca earthquake through an energy-based seismic index method and nonlinear dynamic response analyses. "Bulletin of Earthquake Engineering", v. 12 (n. 5); pp. 2049-2073. ISSN 1570-761X. https://doi.org/10.1007/s10518-013-9513-9.

Description

Title: Assessment of expected damage on buildings subjected to Lorca earthquake through an energy-based seismic index method and nonlinear dynamic response analyses
Author/s:
  • Benavent Climent, Amadeo
  • Escobedo Ruiz, Alberto
  • Donaire Ávila, Jesús
  • Oliver Saiz, E.
  • Ramírez Márquez, A.L.
Item Type: Article
Título de Revista/Publicación: Bulletin of Earthquake Engineering
Date: October 2014
ISSN: 1570-761X
Volume: 12
Subjects:
Freetext Keywords: Lorca earthquake; Damage concentration; Seismic index; Energy methods; Infill panels
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Mecánica
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The city of Lorca (Spain) was hit on May 11th, 2011, by two consecutive earth-quakes of magnitudes 4.6 and 5.2 Mw, causing casualties and important damage in buildings. Many of the damaged structures were reinforced concrete frames with wide beams. This study quantifies the expected level of damage on this structural type in the case of the Lorca earth-quake by means of a seismic index Iv that compares the energy input by the earthquake with the energy absorption/dissipation capacity of the structure. The prototype frames investigated represent structures designed in two time periods (1994–2002 and 2003–2008), in which the applicable codes were different. The influence of the masonry infill walls and the proneness of the frames to concentrate damage in a given story were further investigated through nonlinear dynamic response analyses. It is found that (1) the seismic index method predicts levels of damage that range from moderate/severe to complete collapse; this prediction is consistent with the observed damage; (2) the presence of masonry infill walls makes the structure very prone to damage concentration and reduces the overall seismic capacity of the building; and (3) a proper hierarchy of strength between beams and columns that guarantees the formation of a strong column-weak beam mechanism (as prescribed by seismic codes), as well as the adoption of counter-measures to avoid the negative interaction between non-structural infill walls and the main frame, would have reduced the level of damage from Iv=1 (collapse) to about Iv=0.5 (moderate/severe damage)

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainBIA2011-26816UnspecifiedUniversidad de GranadaControl y mitigación del daño en estructuras nuevas con forjados reticulares mediante disipadores de energía

More information

Item ID: 35896
DC Identifier: http://oa.upm.es/35896/
OAI Identifier: oai:oa.upm.es:35896
DOI: 10.1007/s10518-013-9513-9
Official URL: http://link.springer.com/article/10.1007%2Fs10518-013-9513-9
Deposited by: Memoria Investigacion
Deposited on: 03 Mar 2016 09:11
Last Modified: 07 Mar 2016 09:45
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