Effect of shear force on the initial stiffness of top and seat angle connections with double web angles

Moment–rotation behavior of bolted top–seat angle connections

“…The objective of these tests was to investigate the effects of different geometrical properties of connection, such as top and web angles' dimensions, bolt spacing and beam depth, on connection moment-rotation behavior. Numerical modeling and validation of the specimens with web angles have also been investigated [22][23][24]. In the current study, the accuracy of the FE models with A1 and A2 specimens as the base model is evaluated.…”

“…In this study, all connection components were modeled using solid elements, and the interaction of adjacent surfaces was considered using a contact surface algorithm. Danesh et al [23] and Pirmoz et al [24] studied the effect of 0143-974X/$ -see front matter © 2008 Elsevier Ltd. All rights reserved. doi:10.1016/j.jcsr.2008.08.011 shear force on the initial rotational stiffness of bolted top and seat angle connections with double web angles and proposed equations to predict the reduction factor of initial connection initial stiffness due to the shear force.…”

“…These studies showed that this type of connection has less strength and stiffness and acts like a pinned connection under a combination of these loads. In general, the results of the Azizinamini tests [11] have been used to verify the numerical models [18][19][20][21][22][23][24]. Komuro et al [29] studied the ability of the FEM to predict the moment-rotation relations of bolted top-seat angle connections with three experimental tests.…”

Behavior of bolted top-seat angle connections in fire

“…The differences between the behaviors of these connections have been studied at ambient temperatures [20,21]. As seen in Table 5, the effect of the presence of web angle can be studied by comparing the results of four tests at elevated temperatures.…”

Influence of masonry infill on the seismic performance of concentrically braced frames

“…Top-seat angle connection is one of the typical beam-column connections in CBFs that can be categorized as semi-rigid connections [2]. Pirmoz et al [5] and Danesh et al [6] studied the behaviour of bolted angle connections subjected to combined shear force and bending moment, and proposed an equation to determine the effect of shear force in reducing the initial stiffness of the connections.…”