STUDY OF MOMENT ROTATION BEHAVIOR FOR SEMI RIGID CONNECTIONS CONSISTING OF BOLTS AND ANGLES

The objectives of this paper are to study the effect of different parameters for steel bolted angle connection on moment-rotation behavior under monotonic loading. ABAQUS software is used to develop analytical models based on the previous experimental studies and their accuracy is examined. Using verified analytical models, a parametric study is then carried out to study the moment-rotation behavior with variations in: beam size, top angle thickness, and bolt gauge distance. From the results, the bi-linear moment rotation diagram for the connection is determined and the following results were obtained with respect to the initial stiffness, post-limit stiffness, plastic flexural resistance moment, plastic rotation, ultimate moment, and ultimate rotation. Finally, the effect of each parameter on moment-rotation behavior of the bolted angle steel connection is discussed in detail, and a proposed formula between each parameter and results is estimated.