期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2016
卷号：7
期号：6
页码：1907-1920
出版社：University of Mohammed Premier Oujda
摘要：Irregularities instruments, as a result of the limitations of architectural, performance and finance, are one of the issues considered unavoidable in many urban structures. This study examines the seismic behavior of steel structure with vertical irregularities, including mass, strength and stiffness irregularities. Structural steel moment frames as 2D models were Designed, and using nonlinear static and dynamic analyses, seismic demand frames are calculated. Columns of the middle storey in a regular state have attracted less energy, while irregular structures columns of middle- storey absorb almost 2 times higher energy. If irregular floor is at a higher storey, acceleration in control point is higher. Existence of soft and weak storey, increases the higher mode effect on mass participation ratio.
关键词：Steel Frames; Irregularities in Height; Pushover Analysis; Time History Analysis
