Luis Esteva - institute of engineering national university of mexico

an overview is presented about the influence of different types of structural irregularities on the nonlinear dynamic response and on the reliability functions of multi-story buildings subjected to seismic excitations of different intensities . attention is focused on the following types or irregularities : a vertically irregular systems characterized by significant variations of the floor masses , the storystrength and stiffness properties and the safety factors with respect to story shear associated with linear seismic response , b)in-plan irregular systems characterized by sinificant eccentricities of the story shear-forces determined by linear dynamic response analysis with respect to the corresponding centres of lateral strength and stiffness.

irregular building structures, seismic vulnerability assessment , reliability -based seismic design