Bolted circular flange connections under static bending moment and axial force. (June 2019)

• Record Type: Journal Article
• Authors: Couchaux, M.; Hjiaj, M.; Ryan, I.; Bureau, A.
• Is Part Of: Journal of constructional steel research. Volume 157(2019)
• Page Start: 314
• Page End: 336
• Publication Date: 2019-06
• Subjects: Steel, Structural -- Periodicals; Building, Iron and steel -- Periodicals; Acier de construction -- Périodiques; Construction métallique -- Périodiques; 624.1821
• DOI: 10.1016/j.jcsr.2018.12.024
• Languages: English
• ISSNs: 0143-974X

Abstract

Abstract: The available design rules to evaluate the force distributions in the tension and the compression parts of bolted circular flange connections under bending moment and axial are often based on the beam theory which is not adequate. The aim of this paper is to propose an analytical model for the calculation of the static resistance of bolted circular flange connections subjected to a combined bending moment and an axial force considering the influence of the joint ductility. An analytical model is also proposed to evaluate the stiffness of the tensile and the compressive parts of the connection and thus its initial rotational stiffness. The results obtained via the proposed analytial model are compared favourably against experimental tests and numerical simulations. Highlights: A bending test on a ring flange connection has been performed and completed with a parametric study on 20 connections subjected to both bending moment and axial force. A new component for the compressed area of the flange has been suggested and incorporated in a global model for an accurate estimation of the initial rotational stiffness. A new analytical model for the bending resistance of bolted connection in the presence of axial force considering the ductility of the components is proposed.