eprintid: 10160118 rev_number: 7 eprint_status: archive userid: 699 dir: disk0/10/16/01/18 datestamp: 2023-03-14 15:14:37 lastmod: 2023-03-14 15:14:37 status_changed: 2023-03-14 15:14:37 type: article metadata_visibility: show sword_depositor: 699 creators_name: Al-Dujele, R creators_name: Cashell, KA creators_name: Afshan, S title: Flexural behaviour of concrete filled tubular flange girders ispublished: pub divisions: UCL divisions: B04 divisions: C05 divisions: F44 note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. abstract: In this paper, the behaviour of concrete filled tubular flange girders (CFTFGs) is investigated through both numerical and analytical modelling. These are new and complex members and their behaviour is governed by a number of inter-related parameters. This work aims to study the relative influence of a number of these variables on the flexural behaviour, particularly for CFTFGs with stiffened webs. A nonlinear three-dimensional finite element (FE) model is developed in the ABAQUS software and is validated using available experimental data. The validated model is then employed to conduct parametric studies and investigate the influence of the most salient parameters. For comparison purposes, and to observe the effect of the concrete infill, steel tubular flange girders (STFGs) with a hollow flange are also studied. The finite element models consider the effects of initial geometric imperfections, as well as other geometrical and material nonlinearities, on the response. In addition, simplified analytical expressions for the flexural capacity are proposed, and the results are compared to those from the FE analyses. It is found that CFTFGs and STFGs with the same dimensions have similar buckling shapes but different buckling loads, with the CFTFG offering greater buckling resistance. This highlights the influence of the concrete infill which increases the stiffness of the upper flange, and hence allows the member to carry additional bending moments compared to STFGs. The proposed analytical expressions, which are suitable for design, are also shown to be capable of providing an accurate depiction of the behaviour and bending moment capacity. date: 2018-12 date_type: published publisher: ELSEVIER SCI LTD official_url: https://doi.org/10.1016/j.jcsr.2018.09.017 oa_status: green full_text_type: other language: eng primo: open primo_central: open_green verified: verified_manual elements_id: 1990400 doi: 10.1016/j.jcsr.2018.09.017 lyricists_name: Cashell, Katherine lyricists_id: KCASH63 actors_name: Cashell, Katherine actors_id: KCASH63 actors_role: owner funding_acknowledgements: [Office of the Prime Minister of Iraq through the Higher Committee for Education Development in Iraq] full_text_status: public publication: Journal of Constructional Steel Research volume: 151 pagerange: 263-279 pages: 17 issn: 0143-974X citation: Al-Dujele, R; Cashell, KA; Afshan, S; (2018) Flexural behaviour of concrete filled tubular flange girders. Journal of Constructional Steel Research , 151 pp. 263-279. 10.1016/j.jcsr.2018.09.017 <https://doi.org/10.1016/j.jcsr.2018.09.017>. Green open access document_url: https://discovery.ucl.ac.uk/id/eprint/10160118/1/Al%20Dujele%20et%20al_final%20paper.pdf