Study of BSB Connections Behavior under Cyclic Loads

Researchers have been long investigating modern constructional approaches to improve the efficiency and reliability of the constructs and decrease time, costs, and effort. One such modern constructional approach is the use of prefabricated modular construction forms. Broad sustainable building (BSB) is a modern prefabricate modular steel form with special connections. In this paper, we investigate the effects of the thickness of the connection plates, the use of stiffener with different dimensions, and the use of a pyramid-shaped section on the load-displacement curve under cyclic loading. We use the finite-element software "ABAQUS" to model theconnections. For verification of the obtained results from the software has been checked by comparing them with experimental models. The obtained results indicate that 50% increment in the thickness of the connection plates causes an increment of approximately 7.56%, 1.51% and 19% in yielding force, the displacement at the beginning of the yielding, and maximum bearable force by the connection respectively. The obtained results also demonstrate that the connection has a good ductility such that most of the samples can bear a rotation of 0.70 radian without a decrease in the bearable load or a failure in the connection.