HYBRID FORCE-DISPLACEMENT BASED SEISMIC DESIGN METHOD FOR ECCENTRICALLY BRACED STEEL FRAMES

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SADEGHIZADEH A.; AKBARI J.

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Journal: Ferdowsi Civil Engineering Year:2017 | Volume:29 | Issue:2 Page(s): 117-128

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Information Journal Paper

Title

HYBRID FORCE-DISPLACEMENT BASED SEISMIC DESIGN METHOD FOR ECCENTRICALLY BRACED STEEL FRAMES

Author(s)

SADEGHIZADEH A. | AKBARI J. | Issue Writer Certificate

Keywords

PERFORMANCE-BASED DESIGNQ1

STEEL FRAMESQ1

DUCTILITYQ2

HYBRIDQ2

ECCENTRICALLY BRACED FRAMEQ2

Abstract

In this paper, performance-based seismic design method for ECCENTRICALLY BRACED FRAMEs is implemented. This method combines the advantages of the force based, and the displacement based design methods "so called" HYBRID force-displacement design method (HFD). The applied method transforms the maximum inter-story drift and local DUCTILITY into target roof displacement and then for DUCTILITY and strength reduction factor, proposes several formulas. For this purpose, sixty eccentrically braced STEEL FRAMES with different number of: stories, bay widths, number of spans, various bracing dimensions, etc. were analyzed using nonlinear static analysis method (Push Over Analysis). Then, nonlinear multiple-parameter regression model was utilized for proposing the formulas for the strength reduction factor and DUCTILITY. Lateral loading system type, earthquake level, slenderness of braces, intensity of earthquake, number of roofs and bays were influenced the obtained formulas. The obtained results in compare with force based, and direct displacement based methods show that the seismic responses such as roof displacement and base shear have reliable accuracies. Furthermore, the results indicate that in compare with force-based and displacement based design methods, the members of designed frames using the HYBRID method are economical.

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APA: Copy

SADEGHIZADEH, A., & AKBARI, J.. (2017). HYBRID FORCE-DISPLACEMENT BASED SEISMIC DESIGN METHOD FOR ECCENTRICALLY BRACED STEEL FRAMES. JOURNAL OF CIVIL ENGINEERING (JOURNAL OF SCHOOL OF ENGINEERING), 29(2 ), 117-128. SID. https://sid.ir/paper/195897/en

Vancouver: Copy

SADEGHIZADEH A., AKBARI J.. HYBRID FORCE-DISPLACEMENT BASED SEISMIC DESIGN METHOD FOR ECCENTRICALLY BRACED STEEL FRAMES. JOURNAL OF CIVIL ENGINEERING (JOURNAL OF SCHOOL OF ENGINEERING)[Internet]. 2017;29(2 ):117-128. Available from: https://sid.ir/paper/195897/en

IEEE: Copy

A. SADEGHIZADEH, and J. AKBARI, “HYBRID FORCE-DISPLACEMENT BASED SEISMIC DESIGN METHOD FOR ECCENTRICALLY BRACED STEEL FRAMES,” JOURNAL OF CIVIL ENGINEERING (JOURNAL OF SCHOOL OF ENGINEERING), vol. 29, no. 2 , pp. 117–128, 2017, [Online]. Available: https://sid.ir/paper/195897/en

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