Abstract: The study of Progressive collapse continues to be an active area of research in structural engineering due to the repeated events caused by accidents or act of terrorism. Design guidelines have been developed to mitigate the risk of progressive collapse including direct and indirect design methods. This paper investigates the effect of soil-structure interaction on the capacity of reinforced concrete buildings to resist progressive collapse. The alternate path method was used by removing external columns and applying the UFC 4-023-03 (2009) design guidelines. For soil-structure-interaction, the simplified uncoupled spring model suggested by UFC 273 was adopted to represent the effect of foundation and underneath soil. Three and Seven story building examples designed based on the most common practice of design were studied with edge column removed at ground-, mid-, and roof-floor as per guidelines. Results indicate that soft soil may slightly enhance the behavior of buildings with few floors (the three-story building example) and for more floors building (the seven-story building example), fixed base conditions leads to better behavior. The effect of changing the base conditions is observed to be less for upper story column removal.
Keywords: Buildings, Nonlinear, Progressive Collapse, Soil-Structure Interaction, Static
Title: Progressive Collapse Analysis of Reinforced Concrete Buildings Including Soil-Structure-Interaction
Author: Tharwat A. Sakr
International Journal of Civil and Structural Engineering Research
ISSN 2348-7607 (Online)
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