Paper Information

Journal:   INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING AND PRODUCTION MANAGEMENT (IJIE) (INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE) (PERSIAN)   Fall 2003 , Volume 14 , Number 4; Page(s) 161 To 179.
 
Paper: 

INVESTIGATION INTO THE PROGRESSIVE COLLAPSE BEHAVIOUR OF THE STEEL SPACE FRAMES

 
 
Author(s):  ABEDI K., CHENAGHLOU M., ALI REZAEI S.
 
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Abstract: 

In the present paper, progressive collapse and its main causes have been investigated. The approaches for reducing the risk of progressive collapse are event control, indirect design and direct design. Two basic means of direct design are local resistance design and alternate path method. Based on the studies undertaken on the progressive collapse behaviour of the structures, it has been demonstrated that the alternate path method is the most efficient and economical way for progressive collapse resistant design. Using this method, it is possible to assess the ability of structures against progressive collapse. In the present study, the progressive collapse behaviour of steel space frames has been investigated using alternate path method. The first step in the alternate path method is to find the veridical members in the mechanism of crack growth are brittle fracture with linear elastic material properties. Thus, the size of plastic zone around the crack tip is assumed to be negligible. Fracture is predicted using both the singular term and the second term in the series expansion for strains. The aim is to study the effect of the second term on the direction of fracture as well as the fracture load in plane stress. The results show that this term can influence significantly brittle fracture in mixed mode loading. The results obtained for plane stress are compared with earlier results corresponding to plane strain. The effect of Poissons ratio on the fracture angle and fracture load is also studied.

 
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