Title:
Effect of Softening Models on Behavior of Reinforced
Concrete Framed Shearwalls
Author(s):
Y. L. MO and H. Rothert
Publication:
Structural Journal
Volume:
94
Issue:
6
Appears on pages(s):
730-744
Keywords:
DOI:
10.14359/9733
Date:
11/1/1997
Abstract:
Cracked reinforced concrete in compression has been observed to exhibit lower strength and stiffness than uniaxially compressed concrete. The so-called compression softening effect responsible is thought to be related to the degree of transverse cracking and straining present. It significantly affects the strength, ductility and load-deformation response of a concrete element. A number of experimental investigations have been undertaken to determine the degree of softening that occurs, and the factors that affect it. At the same time, a number of diverse analytical models have been proposed by various researchers aimed at modeling this behavior: In this paper; a softened truss model theory for low-rise framed shear-walls is developed according to the principle of the stress and strain transformations. Using this theory all the softening parameters for the concrete struts are examined by 44 test shear-walls available in literature. It is found that the 1993 Vecchio and Collins ’ Model A provides the best results.