سال انتشار: ۱۳۹۰

محل انتشار: اولین کنفرانس بین المللی ساخت و ساز شهری در مجاورت گسلهای فعال

تعداد صفحات: ۸

نویسنده(ها):

Marjan rabiei ghahfarokhi – MSc in structure department of civil engineering central branch islamic azad university tehran
amir h.akhaveissy – assistant professor razi university kermanshah

چکیده:

in order to seismic retrofitting of existing old buildings or to reform the seismic harmed buildings prefabricated buckleing resistant braces BRB are widely used. Therefore awareness of the BRB’s seismic performance is in particular importance . prediction the factual behavior of BRBs against lateral loads needs implementation of nonlinear analysis and considering materials nonlinear behavior . to perform nonlinear analysis having access to details of sections failure surface is essential the failure surface of a cross section can be defined as the locus of points that correspond to ultimate strength. in this article a novel and efficient method based on fibre method concepts is presented that is usefull to calculate failure surfacesfor BRBs. moment curvature diagrams bending moment axial force interaction curves and biaxial bending axial force failure surfaces are defined by this method.