Abstract
Terrorist attacks in the vicinity of buildings and critical sites can cause catastrophic damage to the internal and external components of buildings.One of the essential steps to maintain national capital and to reduce risk is to study and recognize the behavior of structures under the impact andexplosionloadings and it is necessary because of the special position of steel structures in the construction industry of the country. In the lateral explosion loading on system with steel shear wall, the destruction of adjacent steel frame beam is one of the secondary factors to create a progressive collapses.Therefore, it is necessary to study the behavior of beams under the explosion loading, and the destruction of beams is mainly due to the low resistance of joints and the weakness of beams against the possible buckling. Therefore, using two hardener arrangements in the beams, the frame perpendicular to the steel shear wall under loading of 200 kg TNT at a distance of 3 meters was evaluated in the ABAQUS software.The results showed that the use of hardeners did not have much effect on reducing the displacement of beams.