نوع مقاله : عمران - سازه
نویسندگان
1 دانشجو دکتری، گروه سازه، دانشکده مهندسی عمران، دانشگاه علم و صنعت ایران، تهران، ایران
2 استادیار، مجتمع دانشگاهی پدافند غیرعامل، دانشگاه صنعتی مالک اشتر، تهران، ایران
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Masonry structures have a high potential for severe damage in explosions, and given the increase in terrorist incidents, reinforcing these buildings seems necessary. Over the past thirty years, fiber-reinforced polymers (FRP) have been widely and effectively used for strengthening and improving the performance of these structures. Finite element modeling, while providing a basis for better understanding the behavior of masonry walls, is very useful in predicting the behavior of these members after reinforcement, especially in the absence of experimental results. In this study, using numerical modeling in Abaqus software, the behavior of masonry walls reinforced with FRP sheets against an explosion with a charge equivalent to 150 kg of TNT at a distance of 5 meters was investigated, and the necessary and influential parameters for evaluating the application of this reinforcement method were analyzed. Fiber material, width, thickness, area and arrangement angle of the FRP sheets are among the parameters affecting the behavior of reinforced masonry walls. The results of the modeling show that this reinforcement method is effective for strengthening masonry walls against explosions, significantly reducing the displacement of the wall center and its total energy. Additionally, reinforcing walls with horizontal strips, compared to vertical and diagonal strips, improves the wall’s performance to a greater extent.
کلیدواژه‌ها [English]
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