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Structural Engineering and Mechanics
  Volume 48, Number 2, October25 2013, pages 207-220
DOI: http://dx.doi.org/10.12989/sem.2013.48.2.207
 


Progressive collapse analysis of two existing steel buildings using a linear static procedure
Reza JalaliLarijani, Murude Celikag, Iman Aghayan and Mahdi Kazemi

 
Abstract
    In this study, the vulnerability of two existing asymmetric steel building frames to Progressive Collapse (PC) is assessed. The buildings have different frame systems, steel sections and number of stories (nine and six). An alternate path method (APM) with a linear static analysis (LS) is carried out according to General Services Administration (GSA) 2003 guidelines. The Demand Capacity Ratio (DCR) of each primary element (beams and columns) is given with its specific details for all frames. The results show that the nine-story building with a dual frame system (moment frame with bracing system) has a lower susceptibility and greater resistance to PC than the six-story building with a simple building frame system (gravity system with bracing system). Implementing built-up box-shaped sections for columns is a better choice than using built-up I-shaped sections because there is no weak axis for the box section.
 
Key Words
    Alternate Path Method (APM); deflection; Demand Capacity Ratio (DCR); Linear Static Analysis (LS); Progressive Collapse (PC)
 
Address
Reza JalaliLarijani, Murude Celikag and Mahdi Kazemi : Deptartment of Civil Engineering, Eastern Mediterranean University, Famagusta, Mersin 10, Turkey
Iman Aghayan : Deptartment of Civil Engineering, Shahrood University of Technology, Shahrood, Iran
 

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