TY - JOUR AU - Silva, Carla Cristiane AU - Caldas, Rodrigo Barreto AU - Fakury, Ricardo Hallal AU - Carvalho, Hermes AU - Dias, João Victor Fragoso PY - 2019/08/19 Y2 - 2024/03/28 TI - Web Rotational Stiffness of Continuous Steel-Concrete Composite Castellated Beams JF - Frattura ed Integrità Strutturale JA - Fra&IntStrut VL - 13 IS - 50 SE - SI: Structural Integrity and Safety: Experimental and Numerical Perspectives DO - 10.3221/IGF-ESIS.50.22 UR - https://www.fracturae.com/index.php/fis/article/view/2545 SP - 264-275 AB - <p>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.</p> ER -