EARTHQUAKE PERFORMANCE OF HIGH-STRENGTH CONCRETESTRUCTURAL WALLS WITH BOUNDARY ELEMENTS

摘要

This paper addresses the behavior and strength of structural walls with a concrete compressive strengthexceeding 69 MPa. This information also enhances the current database for improvement of designrecommendations. The objectives of this investigation are to study the effect of axial-load ratio on seismicbehavior of high-strength concrete flexural walls. An analysis has been carried out in order to assess thecontribution of deformation components, i.e. flexural, diagonal shear, and sliding shear on totaldisplacement. The results from the analysis are then utilized to evaluate the prevailing inelasticdeformation mode in each of wall. Moment-curvature characteristics, ductility and damage index arequantified and discussed in relation with axial stress levels. Experimental results show that axial-load ratiohave a significant effect on the flexural strength, failure mode, deformation characteristics and ductility ofhigh-strength concrete structural walls.