The Study of the Behavior of Top and Seat Bolted Angle Connections Under Blast Loads

Abnormal loads induced by blast or impact results in local damages in structures and these local damages may propagate and affect whole structural system. Therefore, structures should be designed in a way that progressive collapse is prevented. Connections have important effect on ductility and strength of structural systems and preventing progressive collapse. Consequently, the behavior of bolted angle connection under blast load is studied in this paper using finite element method. In this study, top and seat bolted angle connection with web angles is investigated using ANSYS finite element software. The models are verified comparing the analysis results with those of experimental tests. The verified models are then exposed to blast load and their behavior is evaluated. Critical areas are determined in the connection and failure modes and applicability of mentioned connections against blast loading is investigated.