AN EXPERIMENTAL INVESTIGATION OF THE BEHAVIOUR OF ECCENTRICALLY BRACED FRAMES

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MAALEK S.; ADIB RAD M.H.; MOSLEHI Y.

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Paper Information

Journal: MODARES TECHNICAL AND ENGINEERING Year:2009 | Volume:- | Issue:36 (SPECIAL ISSUE ON CIVIL ENGINEERING) Page(s): 53-77

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Title

AN EXPERIMENTAL INVESTIGATION OF THE BEHAVIOUR OF ECCENTRICALLY BRACED FRAMES

Author(s)

MAALEK S. | ADIB RAD M.H. | MOSLEHI Y. | Issue Writer Certificate

Keywords

ECCENTRICALLY BRACED FRAMESQ3

LINK BEAMQ3

SHEAR LINKQ2

Abstract

Based on the literature, experimental investigations on ECCENTRICALLY BRACED FRAMES (EBFs), have been limited either to isolated LINK BEAMs under idealized boundary conditions, or subassemblies of the Braced Frames. On the other hand, such tests have also been limited to Wide Flange sections to AISC specifications. In this paper, results of a number of experiments carried out on a single span - single story Eccentrically Brace Frames have been reported. Full scale Braced Frames have been tested in order to investigate the overall behaviour of EBFs, consisting of the LINK BEAM, bracing members and columns, and the effect of connections, bracing members and their interaction to the behaviour of LINK BEAMs have been taken into account. IPE sections to DIN 1025 has been used as LINK BEAMs of the test specimens in order to investigate its competence for use as LINK BEAMs of EBFs; since, these are the only I type sections presently manufactured in the country. At the same time, effects of the distances between the web stiffeners in such SHEAR LINKs as well as the distances between their lateral supports have been investigated. Attention has also been paid to the ductility capacity and the observed modes of failure, with respect to their effects on energy absorption capability of the system due to premature buckling or fracture of the members and connections. The observed behaviour of the test specimens, has been demonstrated clearly and some matters of interest such as the over-strength capacity of the bracing members and the beam outside the link part, have been discussed with consideration of ductility capacity-demand ratios. It has been shown that the study of an isolated LINK BEAM with idealized boundary conditions, which has been the basis of provisions for the design of EBFs would not represent the compound behaviour of the whole system precisely. While some aspects of the existing seismic design provisions for the EBFs have been assessed, it has been shown that IPE sections may be used as LINK BEAMs of EBFs to achieve the expected performance with the appropriate provision of lateral supports and web stiffeners.

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APA: Copy

MAALEK, S., ADIB RAD, M.H., & MOSLEHI, Y.. (2009). AN EXPERIMENTAL INVESTIGATION OF THE BEHAVIOUR OF ECCENTRICALLY BRACED FRAMES. MODARES TECHNICAL AND ENGINEERING, -(36 (SPECIAL ISSUE ON CIVIL ENGINEERING)), 53-77. SID. https://sid.ir/paper/24963/en

Vancouver: Copy

MAALEK S., ADIB RAD M.H., MOSLEHI Y.. AN EXPERIMENTAL INVESTIGATION OF THE BEHAVIOUR OF ECCENTRICALLY BRACED FRAMES. MODARES TECHNICAL AND ENGINEERING[Internet]. 2009;-(36 (SPECIAL ISSUE ON CIVIL ENGINEERING)):53-77. Available from: https://sid.ir/paper/24963/en

IEEE: Copy

S. MAALEK, M.H. ADIB RAD, and Y. MOSLEHI, “AN EXPERIMENTAL INVESTIGATION OF THE BEHAVIOUR OF ECCENTRICALLY BRACED FRAMES,” MODARES TECHNICAL AND ENGINEERING, vol. -, no. 36 (SPECIAL ISSUE ON CIVIL ENGINEERING), pp. 53–77, 2009, [Online]. Available: https://sid.ir/paper/24963/en

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