Experimental Analysis of Bolted Steel Beam-to-Column Connections: Component Identification

Abstract

In this paper, the results of an experimental program dealing with the ultimate behavior of bolted beam-to-column connections under cyclic actions are presented. The design criteria adopted for tested specimens are discussed in detail, aiming to point out how the ultimate behavior can be governed by properly strengthening the components for which yielding has to be prevented. To this scope, the component approach is adopted as a design tool for component hierarchy criteria. The aim of the paper is the investigation of the actual possibility of extending the component approach to the prediction of the cyclic response of beam-to-column joints. To this scope, the attention has been focused on the possibility to evaluate the overall energy dissipation capacity starting from the energy dissipation of the single joint components, provided that they are properly identified and their cyclic behavior is properly measured.

The Influence of Gravity Loads on the Seismic Design of RBS Connections

“…(3)(4)(5)(6)(7)(8)(9) it is evident that the range where "dog bones" can be located, assuring the protection of the beam-to-column connections, decreases as m db increases. In particular, for high values of m db the width of such range is so limited that it could be incompatible with the length of the weakened beam zone required for an appropriate spreading of plasticity.…”

“…For this reason experimental investigations on the cyclic response of partialstrength connections have gained new attention [2][3][4][5][6][7][8][9][10][11]. RBS connections can be considered a particular typology within the framework of partial-strength connections, because their flexural resistance is less than the one of the connected beam.…”

Design of X-shaped double split tee joints accounting for moment–shear interaction

“…In particular, in a past work of the same authors an experimental analysis devoted to evaluate the cyclic behavior of beam-to-column joints characterized by the same plastic resistance but designed in order to engage in plastic range different joint components has been developed [12]. Within this work, the double split T-stub joint has been recognized as an interesting joint solution from the seismic point of view, due to its simplicity and easy constructability.…”

Experimental Analysis on the Cyclic Response of Beam to Column Joints: State-of-the-Art at Salerno University

“…Finally, t cw is the column web thickness. The effective width of the column web panel in transverse compression for bolted end-plate connection is given by: (16) where s in case of rolled sections is the column flange-toweb root radius, s p is the length obtained by a 45° spreading through the end-plate. The reduction factor for plate buckling is defined starting from the definition of the plate slenderness: (17) where d wc is the column web panel height.…”

“…To this scope, aiming to perform a further step towards the codification of design rules for dissipative joints, in last five years a significant experimental and analytical activity has been devoted to this topic by the research group of the University of Salerno [16][17][18][19][20][21]. In particular, to date, the experimental activity performed has regarded classical and innovative joint solutions which, according to the basic principle proposed by the research group of dissipating the seis-mic energy always in a specific joint component (i.e.…”