PERFORMANCE-BASED PLASTIC DESIGN METHODFOR STEEL CONCENTRIC BRACED FRAMES

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BANIHASHEMI M.R.; MIRZAGOLTABAR A.R.; TAVAKOLI H.R.

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Seminar Paper

Paper Information

Seminar: NATIONAL CONGRESS ON CIVIL ENGINEERING
Year:2014 | Issue:8

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Title

PERFORMANCE-BASED PLASTIC DESIGN METHODFOR STEEL CONCENTRIC BRACED FRAMES

Author(s)

BANIHASHEMI M.R. | MIRZAGOLTABAR A.R. | TAVAKOLI H.R. | Issue Writer Certificate

Keywords

PERFORMANCE BASED PLASTIC DESIGN

STEEL CONCENTRIC BRACE FRAME

NONLINEAR DYNAMIC ANALYSES AND ENERGY-WORK BALANCE EQUATION

Abstract

THIS PAPER PRESENTS A PERFORMANCE-BASED PLASTIC DESIGN (PBPD) METHODOLOGY FOR THE DESIGN OF STEEL CONCENTRIC BRACEDFRAMES (CBF). THE DESIGN BASE SHEAR IS OBTAINED BASED ON ENERGY-WORK BALANCE EQUATION USING PRE-SELECTED TARGET DRIFTAND YIELD MECHANISM. IN ORDER TO ACHIEVE THE INTENDED YIELD MECHANISM AND BEHAVIOR, PLASTIC DESIGN IS PERFORMED TODETAIL THE FRAME MEMBERS. THREE LOW-TO-MEDIUM RISE CBF (3-STORY, 6-STORY AND 9-STORY) WERE DESIGNED BY THE PROPOSEDMETHODOLOGY AND CURRENT SEISMIC CODES THAT INCLUDE PROVISIONS TO DESIGN DUCTILE CONCENTRIC BRACED FRAMES CALLED SPECIALCONCENTRIC BRACED FRAMES (SCBF). RESULTS OF INELASTIC DYNAMIC ANALYSES CARRIED OUT ON EXAMPLE FRAMES DESIGNED BY THEPBPD METHOD SHOWED THAT THE FRAMES MET ALL THE INTENDED PERFORMANCE OBJECTIVES IN TERMS OF YIELD MECHANISMS ANDTARGET DRIFT LEVELS. ON THE OTHER HAND, WHEN DESIGNED BY CURRENT CODE AS SCBF THE SAME STRUCTURES SHOWED VERY POORRESPONSE DUE TO PREMATURE BRACE FRACTURES LEADING TO UNACCEPTABLY LARGE DRIFTS AND INSTABILITY. FINALLY IT SHOULD BE NOTEDTHAT NO ITERATIONS WERE CARRIED OUT TO ACHIEVE THE PERFORMANCE OBJECTIVES OF CBF IN THE PBPD METHOD.

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APA: Copy

BANIHASHEMI, M.R., MIRZAGOLTABAR, A.R., & TAVAKOLI, H.R.. (2014). PERFORMANCE-BASED PLASTIC DESIGN METHODFOR STEEL CONCENTRIC BRACED FRAMES. NATIONAL CONGRESS ON CIVIL ENGINEERING. SID. https://sid.ir/paper/946945/en

Vancouver: Copy

BANIHASHEMI M.R., MIRZAGOLTABAR A.R., TAVAKOLI H.R.. PERFORMANCE-BASED PLASTIC DESIGN METHODFOR STEEL CONCENTRIC BRACED FRAMES. 2014. Available from: https://sid.ir/paper/946945/en

IEEE: Copy

M.R. BANIHASHEMI, A.R. MIRZAGOLTABAR, and H.R. TAVAKOLI, “PERFORMANCE-BASED PLASTIC DESIGN METHODFOR STEEL CONCENTRIC BRACED FRAMES,” presented at the NATIONAL CONGRESS ON CIVIL ENGINEERING. 2014, [Online]. Available: https://sid.ir/paper/946945/en

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