Comparison of Average Strength Steel Moment Frame with a Thin Plate Steel Shear Wall and Diverging

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Comparison of Average Strength Steel Moment Frame with a Thin Plate Steel Shear Wall and Diverging Braced Design Method Based on Performance Levels

Original Article, D80
Chegeni V., Baradaran M.R.
J. Civil Eng. Urban. 4(5): 534-539. 2014

ABSTRACT: In this paper a comparison was done between the coefficient of behaviour of steel moment frame systems with thin steel shear wall and diverging braced design method based on performance levels. 20 different frames was used for modelling and numerical analysis by SAP2000 software to calculating the capacity curve, coefficient of behaviour, energy dissipation and point of performance using the spectral capacity. For analysis, loading, determination of joints, levels of performance and etc. of frames, UBC, ATC-4, FEMA 356, Iranian 2800, Iran’s 519 code of practice was used. In general, it can be concluded from this modelling that shear wall systems have much higher energy absorbance capacity but lower ductility than the divergent braced systems in all short, medium, and long buildings. The studies conducted on spectral capacity diagrams shown that the steel shear walls had better performance than divergent braced walls.
Keywords: Coefficient of behaviour, Thin plate steel shear walls, Divergent brace.

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