Analysis of the response of different components of building structures to blast loading is an important step in the protective design of buildings. Included in such components are members of the roof and sides of building spanning perpendicular to the shockfront. Traditionally, in the analysis of the blast response of such elements, the blast loads are represented as equivalent uniform loading. The equivalent uniform loading converts the moving blast loading on the roof to a simplified spatially-uniform, time-varying load. However, earlier studies have shown that the results of response analysis based on the simplified loads are often quite inaccurate when compared to those obtained from a more precise analysis. Therefore, an experimental study was conducted to investigate the response of roof elements under blast loading and to compare the accuracy of two different methodologies based on the spatially-uniform and time-varying loading concept. The results show that the traditional equivalent uniform loads cannot accurately model the response of roof elements, while more detailed finite elements models yield more accurate and reliable results.

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Keywords Blast wave, Experimental analysis, Finite elements analysis, Roof and side beams, Structural response
Conference 6th International Conference on Engineering Mechanics and Materials 2017
Nourzadeh, D. (Danesh), Humar, J.L. (JagMohan L.), & Braimah, A. (2017). Experimental study on blast induced roof loads in building structures. In 6th International Conference on Engineering Mechanics and Materials 2017 (pp. 490–499).