Chapter
Feb 22, 2016
Behaviour and Design of Composite Beams Subjected to Combined Bending and Axial Forces
Authors: G. Vasdravellis, M.ASCE [email protected], B. Uy, M.ASCE [email protected], E. L. Tan [email protected], and B. Kirkland [email protected]Author Affiliations
Publication: Composite Construction in Steel and Concrete VII
Abstract
Steel-concrete composite beams can often be subjected to combined bending and high axial forces. However, the moment-axial force interaction in composite beams is not covered by the current codes of practice. An experimental investigation comprising twenty-four full-scale tests was conducted recently in the University of Western Sydney, aiming to investigate the behaviour and ultimate strength of composite beams under bending and axial forces. Nonlinear finite element simulations and parametric studies complemented the tests. It was found that the moment capacity of a composite beam is reduced in most situations under simultaneous axial loading. Partial shear connection does not alter the shape of the interaction curve, but it affects the ductility of the beam and the amount of axial load transferred to the slab. Based on the experimental and numerical results, simplified design rules are proposed to account for the effect of axial loads on the bending capacity of composite beams.
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© 2016 American Society of Civil Engineers.
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Published online: Feb 22, 2016
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Institute for Infrastructure and Environment, Heriot-Watt Univ., Edinburgh EH14 4AS, U.K. E-mail: [email protected]
Centre for Infrastructure Engineering and Safety, Univ. of New South Wales, Sydney, NSW 2052, Australia. E-mail: [email protected]
Institute for Infrastructure Engineering, Univ. of Western Sydney, Locked Bag 1797, Penrith, NSW 2751, Australia. E-mail: [email protected]
Centre for Infrastructure Engineering and Safety, Univ. of New South Wales, Sydney, NSW 2052, Australia. E-mail: [email protected]
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