New Mathematical Model of the Interaction Curves for Composite Shear Walls

Elastic and inelastic performance of structure members can be evaluated by Bending moment–axial force interaction surfaces in a non - linear process. The use of composite shear wall structures is common method in the past two decades. In this research, this kind of surfaces are being introduced for the first time to be utilized incomposite shear walls, which can be used in analyzing and designing without the need to non - linear analysis. Composite shear walls used for high-rise buildings, offer more lateral stiffness, bending resisting moment, Energy dissipation and ductility in comparison with other ordinary walls. Here, a simple, efficient and expeditious method is presented for nonlinear analysis of reinforced concrete structural members, based on fiber method concepts. One of the considerable advantages of this method is its high speed in nonlinear analysis of structural members that makes it distinctive from the others. The OpenSees software is used for modelling the discussed shear walls.