Iinvestigation Of The Effects Of Various FRP Configurations On The Behaviour Of Masonry Wall Subjected To Blast Load

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 behaviour of masonry walls, is very useful in predicting the behaviour of these members after reinforcement, especially in the absence of experimental results. In this study, using numerical modeling in Abaqus software, the behaviour of masonry walls reinforced with FRP sheets against an explosion with a charge equivalent to ۱۵۰ kg of TNT at a distance of ۵ meters was investigated, and the necessary and influential parameters for evaluating the application of this reinforcement method were analyzed. The width, thickness, area, and arrangement angle of the FRP sheets are among the parameters affecting the behaviour 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.

کلیدواژه ها:

Masonry wall ، Explosion ، Strengthening ، FRP Composite ، Numerical Modeling