Abstract

Nowadays the explosion of bombs or explosive materials such as gas and oil near or inside the buildings cause some losses in installations and building components. This has made the engineers to make the buildings and their components resistance against the effects of explosion. These activities lead to provide regulations and different methods. The above regulations are mostly focused on the explosion effects resulting from the explosive materials around the buildings. Therefore, the explosion resulting from the explosive materials outside the buildings will be studied in this research. In the present study, the main goals are to investigate the explosion load effects on the rectangular box-shaped building with the specific quantity of ductility and observing the permissible response of these structures. The Unified Facility Criteria - UFC 3-340 (2002) are presented as two methods for this purpose. The first procedure is static analysis. This method shall be used as iterative method. Second procedure is nonlinear dynamic analysis. Nonlinear dynamic analysis presents a numerical analysis of the nonlinear dynamic response subjected to impact and explosive loading. The finite-element system and the layered\nonlinear shell were used to study the structural system. Based on an investigative project, several concrete buildings have been modeled using SAP2000. These models were subjected to two types of blast loadings. By using the analysis one may gain a clearer understanding of the validity of static analysis and of the deflections transferred throughout the structures.

Key words: Control building, substation, blast, nonlinear dynamic analysis, iterative static analysis.