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GBT Analysis of Steel-Concrete Composite Beams: Recent Developments

CERIS and Departamento de Engenharia Civil, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica 2829-516, Portugal

E-mail Address: rodrigo.goncalves@fct.unl.pt

Corresponding author.

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Dinar Camotim

CERIS, DECivil, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, Lisboa 1049-001, Portugal

E-mail Address: dcamotim@civil.ist.utl.pt

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, and

David Henriques

TECNORÉM S.A., Estrada Nacional 113, Moinho da Areia, Ourém 2490-444, Portugal

E-mail Address: david.henriques@tecnorem.pt

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https://doi.org/10.1142/S0219455420410072Cited by:8 (Source: Crossref)

This article is part of the issue:

IJSSD 20th Anniversary Special Issue
Editor: C. M. Wang

Abstract

This paper reports the most recent developments concerning Generalized Beam Theory (GBT) formulations, and corresponding finite element implementations, for steel-concrete composite beams. These formulations are able to perform the following types of analysis: (i) materially nonlinear analysis, to calculate the beam load-displacement response, up to collapse, including steel plasticity, concrete cracking/crushing and shear lag effects, (ii) bifurcation (linear stability) analysis, to obtain local/distortional bifurcation loads and buckling mode shapes of beams subjected to negative (hogging) bending, accounting for shear lag and concrete cracking effects and (iii) long-term service analysis including creep, cracking and arbitrary cross-section deformation (which includes shear lag) effects. The potential (computational efficiency and accuracy) of the proposed GBT-based finite elements is illustrated through several numerical examples. For comparison purposes, results obtained with standard finite strip and shell/brick finite element models are provided.

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