SHEAR STRENGTH OF R/C WALL PANEL CONFINED BY PERIPHERAL FRAME

Abstract

In order to clarify the lateral load carrying capacity of framed shearwalls that failed in shear of their in-filled wall panel, it is necessary to investigate the compressive capacity of concrete struts restrained by both the peripheral frame and the reinforcement bars. In this paper the loading apparatus to simulate the stress condition of the shear cracked wall panel was proposed. By using the apparatus the wall panel concrete strut specimens which were reinforced by either the orthogonal grid reinforcement in longitudinal and transverse directions or that in 45-degree direction to the horizontal were tested. The shear strength of wall panel obtained by the tests agreed well with the shear strength of wall panel in framed shearwalls that failed in shear of their in-filled wall panel.