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Effect of out of Frame Positioning of Shear walls in Steel Frames

Author Affiliations

  • 1Department of Civil Engineering, Sharif University of Technology, International Branch, Kish Island, IRAN

Res. J. Recent Sci., Volume 4, Issue (9), Pages 145-155, September,2 (2015)

Abstract

Shear walls are straight external walls that typically form a box which provides all of the lateral support for the building and are constructed to counter the effects of lateral load acting on a structure. Shear walls are designed to resist the horizontal forces due to their strength and stiffness. Thus shear walls are one of the most effective building elements in resisting lateral forces during earthquake and high winds. In this paper we propose a way to optimized positioning of shear walls in steel structures to withstand seismic forces. Three positions will be considered for placing shear wall inside the steel frame: inside frame and interacting with columns, inside frame and non-interacting and eccentric shear wall with an offset equal to thickness of the wall from the frame . These positions are investigated in 4, 10 and 16 story buildings subjected to linear static loading according to Iranian building code (2800). The additional parameter of wall thickness is taken into account for having better point of view. The shear walls are designed according to ACI318-05 and the most cost effective design will be mentioned as optimized design.

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