Abstract
In this study, a new bracing system is proposed which is named as KX type. Element removal method is used to obtain this new bracing. KX type optimized bracing is compared with V, and K type bracings under seismic loading. Maximum deformation value is used as performance indicator to compare effectiveness of V, K, and proposed KX type bracings to resist seismic loads. The proposed KX type bracing, yielded 99.72%, 93% and 88% reduced deformation with respect to unbraced, K type, and V type bracings respectively.
Highlights
During earthquakes buildings which are not designed and/or constructed properly cause many casualties
Ghobarah and Abou-Elfath [6] investigated the seismic performance of low-rise non-ductile reinforced concrete buildings rehabilitated by using eccentric and concentric steel bracing
Developed Element Removal Method (ERM) is improved for seismic loadings
Summary
During earthquakes buildings which are not designed and/or constructed properly cause many casualties These kinds of buildings can be rehabilitated with the use of different systems. Maheri et al [3] studied pushover loads experimentally on scaled model of ductile reinforced concrete (RC) frames directly braced by steel X and knee braces. They stated that when designing or retrofitting for a collapse-level earthquake, knee bracing is a more effective system. Ghobarah and Abou-Elfath [6] investigated the seismic performance of low-rise non-ductile reinforced concrete buildings rehabilitated by using eccentric and concentric steel bracing. Compared to the behavior of the concentric bracing case, eccentric bracing cases exhibited lower deformation and damage when subjected to earthquake ground motions
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