INERTIAL DISTRIBUTION OF SEISMIC ENERGY INTO MULTI-STORY FRAMES

Abstract

Current study offers an analytical tool to assess the distribution of seismic input energy along the height of the structure. The study is conducted on multi-degree-of-freedom systems with lumped masses located at story levels. The seismic action are a set of three recorded and scaled accelerograms (El Centro 1940, Vrancea 1977 and Focșani 1986 respectively). Performed analyses are of time-history type and are conducted in elastic domain on a set of five level steel frame considered in three states of their lateral stiffness. The computed results are presented numerically and graphically in a comparative manner, commented and relevant concluding remarks are inferred.