Document Type : Original Article
Authors
1
PhD Student, Department of Civil Engineering, Shahrood Branch, Islamic Azad University, Shahrood, Iran
2
Assistant Professor, Department of Civil Engineering, Shahrood Branch, Islamic Azad University, Shahrood, Iran
3
Assistant Professor, Department of Mining Engineering, Shahrood Branch, Islamic Azad University, Shahrood, Iran
Abstract
The interaction of blast waves with obstacles is a complex and multifaceted issue that requires thorough and comprehensive examination. While engineering tools exist to predict explosion parameters such as peak pressure, impulse, and loading duration under simple geometric conditions, blast waves fundamentally alter upon encountering objects in their path. Consequently, the loading parameters are also affected by these changes. This research presents a comprehensive review of key studies in this field, which is divided into five main sections. The first section is dedicated to the direct loading of blast waves on the surfaces of structures. The subsequent three sections examine the pressure of blast waves in the rear areas of primary obstacles and blast walls, as well as the interactions involving barriers and wall-barrier combinations. In the final section, a brief description of the methods for predicting loading parameters in the context of blast wave interactions with obstacles is provided. Additionally, significant studies and research concerning the evaluation of various types of walls in terms of effectiveness, materials, and the composition of construction materials under explosive loading are presented. The key findings of this research relate to the mechanisms for reducing blast intensity. These methods include deflection, reflection (diversion from the target structure), expansion and volume increase, and the creation and growth of vortices. Moreover, the properties of obstacles, including material composition, shape, the number of obstacles and rows, and their arrangement, have a substantial impact on these mechanisms.
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