Strength of connections between SHS columns and through plates

Abstract

The use of Square‐Hollow‐Section (SHS) members as columns of moment‐resisting frames is a very interesting solution thanks to several benefits they can provide. However, especially in Europe and the USA, the use of SHS columns is limited by the complexity related to the realisation of beam‐to‐column connections. Nevertheless, the recent use in civil engineering of Laser Cutting Technology (LCT) has offered the opportunity to manufacture welded connections by properly cutting the tubular profile with the imprint of the cross‐section shape of the double‐tee member. Such a solution is an improved alternative to the joint with the I‐beam welded to the external surface of the hollow profile since higher flexural strength and stiffness can be provided. Considering the importance of such a topic, this connection is currently being studied at the University of Salerno within the framework of the component method approach.In this view, the research activity discussed in this paper deals with studying the monotonic behaviour experienced by welded connections between SHS tubes and through‐all plates. In fact, this component is intended to be representative of the actions applied on the tube by each of the beam flanges of a double‐tee profile. In particular, this nodal component has been identified and studied thanks to numerical simulations and theoretical approaches, leading to analytical design formulations.

Stiffness and Strength of Square Hollow Section Tubes under Localised Transverse Actions

“…The previous paragraph addressed the primary components of connections between SHS columns and passing-through IPE beams. Additionally, it presented strength and stiffness equations associated with specific components, which have been investigated in previous studies [43] and/or are now included in current codes [16].…”

“…After identifying the components, it is necessary to examine them in terms of their strength and stiffness. It is important to note that the stiffness and strength of the pcc/pct components have already undergone a comprehensive investigation, as detailed in [43]. This investigation encompassed a combination of experimental, numerical, and analytical analyses.…”

“…This is because it is feasible to employ the formulas already established in Eurocode 3 part 1.8 [16], which are also presented in this document as Equations ( 3)-( 6) as follows: After identifying the components, it is necessary to examine them in terms of their strength and stiffness. It is important to note that the stiffness and strength of the pcc/pct components have already undergone a comprehensive investigation, as detailed in [43]. This investigation encompassed a combination of experimental, numerical, and analytical analyses.…”