torsion of many symmetric structures, which were designed based on the seismic codes, is due to their asymmetricity induced during inelastic behavior. although the structure was designed symmetrically assuming elastic based criteria, different factors such as material inconsistency in structure, construction details discrepancy and construction errors may result in asymmetric behavior in inelas...

This paper proposes a simplified analytical model for seismic response prediction of concentrically braced frames. In the proposed approach, a multistory frame model is reduced to an equivalent shear-building one by performing a static pushover analysis. The conventional shear-building model has been improved by introducing supplementary springs to account for flexural displacements in addition...

Construction of building omitting an infill wall mostly in ground floor and other floors has led a to face soft story failure mechanism. This omission is for commercial purposes parking vehicles floor. In this study, study on the behavior structure done when happens different levels. A explained as per NBC 201 205 taken into consideration. Soft assigned all responses separately. An equivalent d...

Design requirements now appear in the 2005 AISC Seismic Provisions for Structural Steel Buildings (AISC, 2005b), referred to herein as The Provisions, for steel plate shear walls (SPSWs) that are designed such that their web plates buckle in shear and develop diagonal tension fi eld action when resisting lateral loads. Energy dissipation and ductility during seismic events is principally achiev...

The present project aims to present an alternative method for the determination of the inelastic displacements using pushover analysis and directly generated inelastic spectra. The determination of the target displacement is similar to Fajfar`s N2 method, employed in Eurocode 8. Unlike the EC8, where empirical formulas are used for describing the inelastic seismic demand, the proposed method us...