Analysis of Blast Pressure and Behavior of RC Structures under Blast Loading
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Abstract
This article reviews approaches to determine blast pressure-time histories by finding related parameters from the chart given in UFC 3-340-02. The related parameters such as blast peak pressure, arrival time, duration time, impulse and velocity of wavefront can be determined from the chart by specifying blast scaled distance. A CFD (Computational Fluid Dynamics) analysis is another approach used to analyze blast pressure-time histories on structures with complex shape and/or surrounded by other structures. It is possible to simulate phenomenon of blast waves such as reflection, constructive superposition and refraction which are normally observed in real incidences. This article also discusses about Single Degree of Freedom (SDOF) and Finite Element Method (FEM) as analysis approaches used to investigate behavior of blast loaded structures. An FEM simulation employed to analyze the equivalent weight of bare charge TNT used in the bomb blast incidence at Erawan shrine, Ratchaprasong on August 17, 2015 is presented in this article as a case study.
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References
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