Flexibility based global element model for seismic analysis of RC frame structures

摘要

The present paper briefly describes an element model, developed within the flexibilityformulation context, for the analysis of reinforced concrete frame structures by recourse to oneto-one discretizations of each beam and column whose progressive stiffness modifications aretaken into account. The flexibility formulation is particularly suitable for such a purpose and, togetherwith a moment-curvature global section model and the adequate control of certain movingsections, it has allowed the development of a global element model, robust, efficient, economic andable to trace the evolution of the element state at each load step. The model application is also presented,reporting the seismic response simulation of a four storey full scale building experimentallytested by recourse to the pseudo-dynamic method, and some discussion is included concerningthe model ability to describe distinct stages of the structural behaviour.