THE INVESTIGATION ON ANALYSIS MODELS OF ULTIMATE STRENGTH OF REINFORCED CONCRETE SHEAR WALL BASED ON SHEAR RESISTANT MECHANISM

The purpose of this paper is to investigate an analysis model to evaluate the ultimate strength of RC shear wall with edge-frame columns or concealed columns based on the shear resistant mechanism and failure modes. According to its mechanical behavior, failure process and modes, shear resistant mechanism of RC shear wall can be simplified as a composition of concrete inclined strut with an inclination of θ，horizontal and longitudinal bars. The calculating equations for ultimate strength are provided from shear resistant mechanism, and a program is developed to evaluate the strengths of RC shear walls. Simultaneously, the ultimate strengths of 14 RC shear walls are analyzed with this program. The analysis results agree well with those of test. It can be concluded that the analysis model verified in this paper can evaluate the ultimate strengths of RC shear walls, and the model can be used to check the ultimate strength of RC shear wall subjected to different loads.