Correlation between non-spectral and cumulative-based ground motion intensity measures and demands of structures under mainshock-aftershock seismic sequences considering the effects of incident angles

Amiri, Saeed, Di Sarno, Luigi ORCID: 0000-0001-6244-3251 and Garakaninezhad, Alireza (2022) Correlation between non-spectral and cumulative-based ground motion intensity measures and demands of structures under mainshock-aftershock seismic sequences considering the effects of incident angles Structures, 46. pp. 1209-1223. ISSN 2352-0124, 2352-0124

Text MULTIDIRECTIONAL.pdf - Author Accepted Manuscript Download (1MB) | Preview

Abstract

One of the pivotal steps in seismic assessment of structures is the definition of functional relationships between an Engineering Demand Parameter (EDP) and a ground motion Intensity Measure (IM). This paper investigates the correlation between widely used non-spectral and cumulative-based ground motion intensity measures and corresponding engineering demand parameters for regular and irregular structures as bidirectional single-degree-of-freedom (2D-SDOF) systems. The correlation is investigated under sequential earthquakes in terms of efficiency and sufficiency, considering various seismic incident angles. Structural performance is expressed as maximum inelastic displacement, MD, maximum inelastic absolute acceleration, MA, residual displacement, RD, and hysteretic energy, EH. The results of extensive parametric analyses show that if the MD, MA, EH and RD of regular systems are considered as demand parameters, the optimal IMs in terms of efficiency and sufficiency are v<inf>sq</inf>, a<inf>rms</inf>, v<inf>rs</inf> and v<inf>sq</inf>, respectively.

Item Type:	Article
Uncontrolled Keywords:	Seismic incident angle, Mainshock-aftershock sequences, Efficiency and sufficiency of Intensity Measures, Engineering demand parameters
Depositing User:	Symplectic Admin
Date Deposited:	07 Dec 2022 11:18
Last Modified:	01 Mar 2026 12:31
DOI:	10.1016/j.istruc.2022.10.076
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3166510
Disclaimer:	The University of Liverpool is not responsible for content contained on other websites from links within repository metadata. Please contact us if you notice anything that appears incorrect or inappropriate.