HIGHER MODE EFFECTS ON SEISMIC BEHAVIOR OF MDOF STEEL MOMENT RESISTING FRAMES

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DANESHJOU FARHAD; GERAMI MOHSEN

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Journal: Journal of Seismology and Earthquake Engineering Year:2003 | Volume:5 | Issue:3 Page(s): 41-54

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Title

HIGHER MODE EFFECTS ON SEISMIC BEHAVIOR OF MDOF STEEL MOMENT RESISTING FRAMES

Author(s)

DANESHJOU FARHAD | GERAMI MOHSEN | Issue Writer Certificate

Keywords

SEISMIC RESPONSEQ4

DEMANDQ4

HIGHER MODE EFFECTSQ4

DYNAMIC ANALYSISQ4

SMRFQ4

Abstract

In this paper, the effects of higher modes on SEISMIC RESPONSE of multi degree of freedom (MDOF) steel moment-resisting frames (SMRF) are investigated. Modification factors to the response of first mode SDOF system are presented in order to estimate seismic MDOF system DEMANDs. The study is based on spectral analysis and linear and nonlinear dynamic time history analysis of 4, 10, 15, 20 and 25 storey SMRFs under Elcentro, Tabas, Naghan and Manjil earthquake loading. A modification factor αeldisp is defined in order to estimate roof elastic displacement DEMANDs of an MDOF frame from first mode elastic displacement spectra. Base shear modification factor αvH M (to compute MDOF strength reduction factors), maximum story drift DEMAND modification factor αdH M , and maximum story dynamic ductility DEMAND modification factor αµH M are defined and presented for SDOF system responses in order to estimate the main MDOF system nonlinear SEISMIC RESPONSEs, including HIGHER MODE EFFECTS.

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APA: Copy

DANESHJOU, FARHAD, & GERAMI, MOHSEN. (2003). HIGHER MODE EFFECTS ON SEISMIC BEHAVIOR OF MDOF STEEL MOMENT RESISTING FRAMES. JOURNAL OF SEISMOLOGY AND EARTHQUAKE ENGINEERING, 5(3), 41-54. SID. https://sid.ir/paper/112317/en

Vancouver: Copy

DANESHJOU FARHAD, GERAMI MOHSEN. HIGHER MODE EFFECTS ON SEISMIC BEHAVIOR OF MDOF STEEL MOMENT RESISTING FRAMES. JOURNAL OF SEISMOLOGY AND EARTHQUAKE ENGINEERING[Internet]. 2003;5(3):41-54. Available from: https://sid.ir/paper/112317/en

IEEE: Copy

FARHAD DANESHJOU, and MOHSEN GERAMI, “HIGHER MODE EFFECTS ON SEISMIC BEHAVIOR OF MDOF STEEL MOMENT RESISTING FRAMES,” JOURNAL OF SEISMOLOGY AND EARTHQUAKE ENGINEERING, vol. 5, no. 3, pp. 41–54, 2003, [Online]. Available: https://sid.ir/paper/112317/en

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