Web Rotational Stiffness of Continuous Steel-Concrete Composite Castellated Beams

Carla Cristiane Silva; Rodrigo Barreto Caldas; Ricardo Hallal Fakury; Hermes Carvalho; João Victor Fragoso Dias

doi:10.3221/IGF-ESIS.50.22

Web Rotational Stiffness of Continuous Steel-Concrete Composite Castellated Beams

Authors

Carla Cristiane Silva UFMG https://orcid.org/0000-0001-5339-059X
Rodrigo Barreto Caldas UFMG - UNIVERSIDADE FEDERAL DE MINAS GERAIS https://orcid.org/0000-0002-0851-7632
Ricardo Hallal Fakury https://orcid.org/0000-0002-1884-5699
Hermes Carvalho https://orcid.org/0000-0002-4652-8068
João Victor Fragoso Dias https://orcid.org/0000-0003-1455-1519

DOI:

https://doi.org/10.3221/IGF-ESIS.50.22

Keywords:

Rotational stiffness, Castellated composite beam, Lateral distortional buckling, Elastic critical moment

Abstract

Continuous composite beams may suffer a global instability know as lateral distortional buckling (LDB). The design code EN 1994-1-1:2004 provides a procedure for the verification of this ultimate limit state, in which the resistant bending moment to LDB is calculated considering the behavior of the inverted “U-frame” mechanism. An essential parameter for the determination of this moment is the rotational stiffness of the composite beam, which depends on the web stiffness. The EN 1994-1-1:2004 procedure is restricted to composite beams with solid-web steel sections without openings. This paper presents several numerical analyses of the web rotational stiffness of castellated sections such as Anglo-saxon, Litzka and Peiner typology. Finally, based on numerical results obtained, a calculation procedure for determination of this stiffness was proposed.

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Published

19-08-2019

Issue

Vol. 13 No. 50 (2019): October 2019

Section

SI: Structural Integrity and Safety: Experimental and Numerical Perspectives

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Authors are allowed to retain both the copyright and the publishing rights of their articles without restrictions.

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How to Cite

Web Rotational Stiffness of Continuous Steel-Concrete Composite Castellated Beams. (2019). Frattura Ed Integrità Strutturale, 13(50), 264-275. https://doi.org/10.3221/IGF-ESIS.50.22