DUCTILITY EVALUATION OF X-BRACED STEEL FRAMES WHICH ARE BRACED IN TWO ADJACENT MIDDLE BAYS

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ASGHARI A.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: Ferdowsi Civil Engineering Year:2016 | Volume:27 | Issue:2 Page(s): 57-74

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Title

DUCTILITY EVALUATION OF X-BRACED STEEL FRAMES WHICH ARE BRACED IN TWO ADJACENT MIDDLE BAYS

Author(s)

ASGHARI A. | Issue Writer Certificate

Keywords

DUCTILITY REDUCTION FACTORQ1

CONCENTRICALLY BRACED FRAMEQ2

PUSHOVER ANALYSISQ2

TARGET DISPLACEMENTQ2

Abstract

In this study, for evaluating ductility of ordinary CONCENTRICALLY BRACED FRAMEs (OCBFs) and special CONCENTRICALLY BRACED FRAMEs (SCBFs) which are X- braced in two adjacent middle spans, 16 steel ordinary CONCENTRICALLY BRACED FRAMEs and 16 special CONCENTRICALLY BRACED FRAMEs are studied. The results confirm that, although most of ordinary CONCENTRICALLY BRACED FRAMEs, which are X-braced, cannot experience the corresponding TARGET DISPLACEMENT, but because of their high designing force level expected ductility can be obtained. Also results confirm that the response modification factor of SCBFs which is proposed by Iranian seismic design code (2800 standard forth edition), R=5.5, is more logical than ASCE's one, R=6. According to the results, the response modification factor of 5 is proposed for special CONCENTRICALLY BRACED FRAMEs, which have an analytical period of more than one second (frames more than 10 stories).

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APA: Copy

ASGHARI, A.. (2016). DUCTILITY EVALUATION OF X-BRACED STEEL FRAMES WHICH ARE BRACED IN TWO ADJACENT MIDDLE BAYS. JOURNAL OF CIVIL ENGINEERING (JOURNAL OF SCHOOL OF ENGINEERING), 27(2), 57-74. SID. https://sid.ir/paper/195815/en

Vancouver: Copy

ASGHARI A.. DUCTILITY EVALUATION OF X-BRACED STEEL FRAMES WHICH ARE BRACED IN TWO ADJACENT MIDDLE BAYS. JOURNAL OF CIVIL ENGINEERING (JOURNAL OF SCHOOL OF ENGINEERING)[Internet]. 2016;27(2):57-74. Available from: https://sid.ir/paper/195815/en

IEEE: Copy

A. ASGHARI, “DUCTILITY EVALUATION OF X-BRACED STEEL FRAMES WHICH ARE BRACED IN TWO ADJACENT MIDDLE BAYS,” JOURNAL OF CIVIL ENGINEERING (JOURNAL OF SCHOOL OF ENGINEERING), vol. 27, no. 2, pp. 57–74, 2016, [Online]. Available: https://sid.ir/paper/195815/en

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