Abstract

AbstractSteel shear tab connections are one of the most common types of connections used to connect steel beams to supporting columns and girders. Shear tab connections can be two types: conventional shear tab (CST) and extended shear tab (EST). In EST connection, the shear tab is generally extended beyond the supporting member’s flange. While significant research has been conducted on standard shear tab connections, research on extended shear tab connections is limited. This paper presents the development of a three-dimensional (3D) finite element model (FEM) to study the behavior of shear tab connections, both conventional and extended shear tab in I-shaped beam. Both material and geometric nonlinearities are considered in the FE model. The finite element model is validated against experimental results of an EST connection in an I-shaped beam. After validation of the FEM with experiments, a parametric study is carried out for I-beams with unstiffened CST and EST connections with supporting column web. In the parametric study, effects of different parameters such as the number of bolts, length, and thickness of shear tabs on both conventional and extended shear tab connections are studied.

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