NDLI: The ductility-based strength reduction factor for the mainshock

Content Provider	Springer Nature Link
Author	Zhai, Chang Hai Wen, Wei Ping Li, Shuang Xie, Li Li
Copyright Year	2015
Abstract	This manuscript investigates the strength reduction factor of single degree of freedom system with constant ductility performance subjected to the mainshock–aftershock sequence-type ground motions. The recorded and artificial sequence-type ground motions are used. The aftershock ground motions in sequence are scaled to have different relative intensity levels. Four hysteretic models are used to simulate the different type of structures. The effects of period, ductility factor, site condition, aftershock, hysteretic behavior and damping are studied statistically. The results indicate that the strong aftershock ground motion has more obvious influences on strength reduction factors in short period region than on those in long period region. The degrading behavior would decrease the strength reduction factor of structure with short period at a magnitude of <20 %, while it would increase that of structure with medium-long period at a maximum level of 20 %. Finally, a predictive model, incorporating the effect of aftershock, is proposed to determine the strength reduction factor in the seismic design.
Starting Page	2893
Ending Page	2914
Page Count	22
File Format	PDF
ISSN	1570761X
Journal	Bulletin of Earthquake Engineering
Volume Number	13
Issue Number	10
e-ISSN	15731456
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-03-22
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Strength reduction factor Mainshock–aftershock sequence-type ground motion Relative intensity Site condition Hysteretic behavior Geotechnical Engineering & Applied Earth Sciences Environmental Engineering/Biotechnology Civil Engineering Geophysics/Geodesy Hydrogeology Structural Geology
Content Type	Text
Resource Type	Article
Subject	Building and Construction Geophysics Geotechnical Engineering and Engineering Geology Civil and Structural Engineering

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