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Efficient re-design of continuous concrete-steel composite beams

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conference contribution
posted on 2017-07-28, 09:10 authored by Mohammed A. Al-Shuwaili, Alessandro Palmeri, Mariateresa Lombardo
Continuous steel-concrete composite beams are widely used in the construction industry. The concrete slab is typically attached to an I steel girder by means of welded headed studs, which however are susceptible to several problems and need special considerations at hogging bending regions. In this paper, an efficient re-design for the steel I-shaped girders is proposed. The width of the upper flange is reduced while the depth of the web is increased which maintaining the same area of steel. The elongated web has perforations along its length and penetrates the slab in such a way that allows the concrete to form concrete dowels and thus achieve the required bond. A numerical study based on the plastic analysis of the composite section is used to quantify the change in the bending capacity due to the proposed type of connection, considering both cases of sagging and hogging moments. The results of a comparative analysis between the proposed re-design and examples of designs taken from the literature are also presented. The study demonstrates an increased moment capacity in both sagging and hogging regions for the composite beams, with the possibility of fabricating more efficient cross sections based on the actual bending moment diagram.

Funding

The first author would like to gratefully acknowledged his sponsors, the Iraqi Ministry of Higher Education and Scientific Research and the University of Kufa, for their financial support in his Ph.D. studies at Loughborough University.

History

School

  • Architecture, Building and Civil Engineering

Published in

International Postgraduate Research Conference 2017 (IPGRC 2017)

Volume

New Adelphi Theatre, University of Salford

Citation

AL-SHUWAILI, M.A., PALMERI, A. and LOMBARDO, M., 2017. Efficient re-design of continuous concrete-steel composite beams. Presented at the International Postgraduate Research Conference 2017 (IPGRC 2017), Salford University, Salford, 14-15th Sept, Herausgeber: TU . Verlag.

Version

  • AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

2017-07-10

Publication date

2017

Notes

This is a conference paper.

ISBN

9783903024281

ISSN

2523-9198

Language

  • en

Location

Salford University