Dynamic behavior of RC wall with replaceable connections under explosion load effect

Abstract

Many studies have been done on the design methods of concrete shear walls so that in these methods, shear walls are considered rigid and are connected to the building frame by special connections. These connections, which act as fuses, are defined in various ways. One of these definitions is Self-Centring Rocking RC Shear Wall (SC-RRSCW). The purpose of this study is to investigate the dynamic behavior of the system under the effect of explosion load. For this study, the effect of various parameters such as the thickness of the wall enclosed in the wall, the thickness of the outer sheet, the thickness of the hardening sheets, the diameter of the longitudinal bolts, the distance from the center of the explosion to the wall and the mass of explosives are considered. This study was performed using the finite element numerical method and using Abacus software. The results show that except for the distance from the blast center and the mass of the explosives, the remaining variables have little effect on the maximum strain energy and displacement. It has also been seen that in all models, due to changes in the dimensional characteristics of structural components as well as changes in the distance and weight of explosives, none of the structural components have entered their yield zone.