Creep analysis of steel-concrete composite beams using generalized beam theory

David Henriques; Rodrigo Gonçalves; Dinar Camotim

Creep analysis of steel-concrete composite beams using generalized beam theory

David Henriques, Rodrigo Gonçalves, Dinar Camotim

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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Abstract

This paper presents the latest developments concerning the numerical modelling of steelconcrete composite beams using finite elements based on Generalized Beam Theory (GBT). In particular, this paper is dedicated to showing that GBT makes it possible to obtain, with significant accuracy and computational efficiency, the combined effects of creep and shear lag. In order to capture these effects, shear lag deformation modes are added to the beam kinematic description and the influence of creep is taken into account through a linear viscoelastic law which is written as a
Dirichlet series expansion. An illustrative numerical example is presented, to show the capabilities and potential of the proposed GBT-based finite element formulation.

Original language	English
Title of host publication	Proceedings of the 8th International Conference on Thin-Walled Structures (ICTWS 2018)
Publisher	Universidade de Lisboa
Number of pages	10
Publication status	Published - 24 Jul 2018
Event	8th International Conference on THIN-WALLED STRUCTURES (ICTWS 2018) - Lisbon, Portugal Duration: 24 Jul 2018 → 27 Jul 2018 Conference number: 8th

Conference

Conference	8th International Conference on THIN-WALLED STRUCTURES (ICTWS 2018)
Abbreviated title	ICTWS 2018
Country	Portugal
City	Lisbon
Period	24/07/18 → 27/07/18

Keywords

Steel-concrete beams
Shear lag
Creep
Generalized Beam Theory

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Henriques, D., Gonçalves, R., & Camotim, D. (2018). Creep analysis of steel-concrete composite beams using generalized beam theory. In Proceedings of the 8th International Conference on Thin-Walled Structures (ICTWS 2018) [92] Universidade de Lisboa.

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abstract = "This paper presents the latest developments concerning the numerical modelling of steelconcrete composite beams using finite elements based on Generalized Beam Theory (GBT). In particular, this paper is dedicated to showing that GBT makes it possible to obtain, with significant accuracy and computational efficiency, the combined effects of creep and shear lag. In order to capture these effects, shear lag deformation modes are added to the beam kinematic description and the influence of creep is taken into account through a linear viscoelastic law which is written as aDirichlet series expansion. An illustrative numerical example is presented, to show the capabilities and potential of the proposed GBT-based finite element formulation.",

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