ANALYTICAL INVESTIGATION OF BEHAVIOR OF Y-SHAPED CONCENTRIC BRACING

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MAJID ZAMANI S.S.; RASOULI S.M.

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Journal: MODARES TECHNICAL AND ENGINEERING Year:2006 | Volume:- | Issue:25 Page(s): 69-87

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Title

ANALYTICAL INVESTIGATION OF BEHAVIOR OF Y-SHAPED CONCENTRIC BRACING

Author(s)

MAJID ZAMANI S.S. | RASOULI S.M. | Issue Writer Certificate

Keywords

BRACINGQ4

CONCENTRICQ4

BUCKLINGQ4

INELASTICQ2

Abstract

Y-shaped CONCENTRIC BRACING exhibits a unique behavior of producing tension or compression in all of its three members under horizontal loading in plane of BRACING. So far, the use of this BRACING has been justified with regard to its stable behavior when its members are tensile. Considering the limitation of horizontal component of tension in BRACING to 70% of total shear in Iranian standard 2800, it is necessary that y- BRACING be able to resist at least 30% of total shear by compressive internal forces. In this research, performance of y-BRACING with compressive members is investigated. Out of plane BUCKLING is the most probable mode of failure of y-BRACING. Observing the importance of flexural fixity of member supports in determining the out of plane BUCKLING load, the critical load is computed assuming connections formed by steel plates welded to both sides of BRACING members. Calculations show that y-BRACING has considerable capacity to resist lateral force producing compression in its members. Variation of critical elastic load due to variation in location of convergence point of members is studied. The highest elastic critical load occurs with convergence point on the full diagonal member. Moving the convergence point towards the frame corner reduces the elastic load.Elastic BUCKLING load has been higher than the yield capacity of members under the geometries considered. So INELASTIC BUCKLING is probable and has been investigated. By assuming the convergence point on the full diagonal member, the highest INELASTIC critical load is obtained. Hysteretic energy absorption of BRACING increases by reducing the distance between convergence point and corner of frame. Hysteretic behavior of y-BRACING becomes more symmetric in load-displacement coordinates with convergence point closer to the corner of frame.

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APA: Copy

MAJID ZAMANI, S.S., & RASOULI, S.M.. (2006). ANALYTICAL INVESTIGATION OF BEHAVIOR OF Y-SHAPED CONCENTRIC BRACING. MODARES TECHNICAL AND ENGINEERING, -(25), 69-87. SID. https://sid.ir/paper/25046/en

Vancouver: Copy

MAJID ZAMANI S.S., RASOULI S.M.. ANALYTICAL INVESTIGATION OF BEHAVIOR OF Y-SHAPED CONCENTRIC BRACING. MODARES TECHNICAL AND ENGINEERING[Internet]. 2006;-(25):69-87. Available from: https://sid.ir/paper/25046/en

IEEE: Copy

S.S. MAJID ZAMANI, and S.M. RASOULI, “ANALYTICAL INVESTIGATION OF BEHAVIOR OF Y-SHAPED CONCENTRIC BRACING,” MODARES TECHNICAL AND ENGINEERING, vol. -, no. 25, pp. 69–87, 2006, [Online]. Available: https://sid.ir/paper/25046/en

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