TY - JOUR
T1 - Site-dependent design spectra and strength modification factors, based on records from Greece
AU - Karakostas, C. Z.
AU - Athanassiadou, C. J.
AU - Kappos, A. J.
AU - Lekidis, V. A.
N1 - Funding Information:
The writers would like to thank the Greek Earthquake Planning and Protection Organization (OASP) for its support to part of the research reported herein through a grant (2000–2002). Conclusions from the present study do not necessarily reflect the views of the funding organization. The writers gratefully acknowledge the contribution of ITSAK researchers Drs. N. Theodulidis and B. Margaris to the selection and processing of the records used in this study; Dr. Theodulidis also provided the synthetic accelerograms used in Section 3.3. The writers also wish to acknowledge the contribution of ITSAK researcher N. Klimis to the classification of the recording stations according to Eurocode 8 criteria.
PY - 2007/11
Y1 - 2007/11
N2 - Elastic and inelastic spectra are derived, based on a representative sample of acceleration records from Greece, carefully selected based on magnitude, distance and peak ground acceleration criteria, and grouped into three ground condition categories according to the 2004 Eurocode 8 (EC8) provisions. Using software developed in-house, elastic (pseudoacceleration, pseudovelocity and displacement), as well as inelastic (strength and displacement) spectra are computed for various critical damping ratios and ductility levels. After appropriate scaling, mean spectra are computed both irrespective of, as well as for each different, ground condition, and comparisons with EC8 provisions are made. As a further evaluation of the code spectra, three additional earthquake scenarios are considered representing ground-motion characteristics not reflected in the compiled dataset of records. Subsequently, modification factors for strength (qμ) are derived from statistical analysis of constant ductility spectra, and corresponding empirical relationships, suitable for design purposes, are proposed.
AB - Elastic and inelastic spectra are derived, based on a representative sample of acceleration records from Greece, carefully selected based on magnitude, distance and peak ground acceleration criteria, and grouped into three ground condition categories according to the 2004 Eurocode 8 (EC8) provisions. Using software developed in-house, elastic (pseudoacceleration, pseudovelocity and displacement), as well as inelastic (strength and displacement) spectra are computed for various critical damping ratios and ductility levels. After appropriate scaling, mean spectra are computed both irrespective of, as well as for each different, ground condition, and comparisons with EC8 provisions are made. As a further evaluation of the code spectra, three additional earthquake scenarios are considered representing ground-motion characteristics not reflected in the compiled dataset of records. Subsequently, modification factors for strength (qμ) are derived from statistical analysis of constant ductility spectra, and corresponding empirical relationships, suitable for design purposes, are proposed.
KW - Design spectra
KW - Elastic spectra
KW - Eurocode 8
KW - Inelastic spectra
KW - Strength reduction factors
UR - https://www.scopus.com/pages/publications/34447528739
U2 - 10.1016/j.soildyn.2007.03.002
DO - 10.1016/j.soildyn.2007.03.002
M3 - Article
AN - SCOPUS:34447528739
SN - 0267-7261
VL - 27
SP - 1012
EP - 1027
JO - Soil Dynamics and Earthquake Engineering
JF - Soil Dynamics and Earthquake Engineering
IS - 11
ER -