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A platform for research: civil engineering, architecture and urbanism
Web Rotational Stiffness of Continuous Steel-Concrete Composite Castellated Beams
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.
Web Rotational Stiffness of Continuous Steel-Concrete Composite Castellated Beams
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.
Web Rotational Stiffness of Continuous Steel-Concrete Composite Castellated Beams
Silva, Carla Cristiane (author) / Caldas, Rodrigo Barreto (author) / Fakury, Ricardo Hallal (author) / Carvalho, Hermes (author) / Dias, João Victor Fragoso (author)
2019-08-19
Frattura ed Integrità Strutturale; Vol. 13 No. 50 (2019): October 2019; 264-275 ; Frattura ed Integrità Strutturale; V. 13 N. 50 (2019): October 2019; 264-275 ; 1971-8993
Article (Journal)
Electronic Resource
English
DDC:
621
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