Tensile behaviour of asymmetric bolted square hollow section column splices

Yan, R.; Xin, H.; Veljkovic, M.; Da Silva, Luís Simões

doi:10.1016/j.tws.2023.111014

Tensile behaviour of asymmetric bolted square hollow section column splices

Title

Tensile behaviour of asymmetric bolted square hollow section column splices

Author

Yan, R. (TU Delft Steel & Composite Structures)
Xin, H. (TU Delft Concrete Structures; Xi’an Jiaotong University)
Veljkovic, M. (TU Delft Steel & Composite Structures)
Da Silva, Luís Simões (Universidade de Coimbra)

Date

2023

Abstract

In traditional end plate column splices, bolts are placed double symmetrically on the four sides of square hollow sections (SHS). In order to reduce the required gap between the façade and the column, the end plate could be flushed on one or two sides of SHS for the column along the façade or at the corner of a building, respectively. However, the analytical solution (Component method) for the traditional column splice is not applicable in this case. This paper addresses the tensile behaviour of asymmetric column splices, where a cover plate is used on the end plate flushed side. Columns are dominantly loaded in compression and bending, but to verify the component's interaction, the column splices are tested in tension in this paper. The tensile behaviour is investigated through the experiment, the finite element (FE) analysis, and the component method. Eight tensile tests were conducted. The FE model is validated against the experiment. A bi-linear model is employed to characterise the column splice yield resistance, which shows a good agreement with the ultimate resistance of the FE model using a constitutive model without strain hardening. The effective length measured from the FE model is approximately two times that calculated by equations. Using the measured effective length, the component method predicts the characterised yield resistance well (average 13% lower). In comparison, the resistance is underestimated by 35% on average if the calculated effective length is used.

Subject

Asymmetric column splices
Bolted connection
Component method
Square hollow section
Yield line

To reference this document use:

http://resolver.tudelft.nl/uuid:d9fcf2e5-af48-4914-80f7-e3e12b5a73b7

DOI

https://doi.org/10.1016/j.tws.2023.111014

ISSN

0263-8231

Source

Thin-Walled Structures, 190

Part of collection

Institutional Repository