Estimation of friction contribution in the behavior of steel-concrete composite beams with flexible shear connectors

Q3 Earth and Planetary Sciences

Rem-Revista Escola De Minas Pub Date : 2014-09-01 DOI:10.1590/S0370-44672014000300002

G. Queiroz, H. Carvalho, F. Rodrigues, Michèle Pfeilo

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引用次数: 6

Abstract

A shear connector, developed to be applied to a composite beam whose steel profile is a thin-walled box profile, displayed much greater flexibility than the conventional welded shear connector, leading to particular issues in the composite beam behaviour. One of these issues is the role played by friction at the interface between the steel profile and the slab which, under particular circumstances, may be relevant for serviceability limit states and also for ultimate limit states. The Brazilian and American Standards do not yet recognize the friction contribution in the behaviour of composite beams, though they recognize this contribution in composite slabs. This paper presents the experimental tests carried out with and without friction contribution on simple supported composite beams with flexible connectors and the numerical models developed to simulate the behaviour of the tested beams. The experimental tests revealed significant increases in strength and stiffness of the composite beam due to friction contribution and the comparisons between numerical and experimental results displayed good correlations.

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含柔性剪力连接件钢-混凝土组合梁性能中摩擦贡献的估计

一种用于薄壁箱型复合梁的剪切接头，比传统的焊接剪切接头具有更大的灵活性，从而导致了复合梁性能的特殊问题。其中一个问题是在钢型材和板之间的界面上的摩擦所起的作用，在特殊情况下，这可能与使用极限状态和最终极限状态有关。巴西和美国的标准还没有认识到摩擦对组合梁的行为的贡献，虽然他们承认这种贡献在组合板。本文介绍了在有摩擦和无摩擦的情况下对柔性连接件简支组合梁进行的试验，以及为模拟试验梁的性能而建立的数值模型。实验结果表明，摩擦对复合梁的强度和刚度有显著的提高，数值结果与实验结果的比较显示出良好的相关性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Rem-Revista Escola De Minas 工程技术-工程：土木

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： REM – International Engineering Journal (antigua REM – Revista Escola de Minas) es la primera revista técnica de Sudamérica. Fue fundada en enero de 1936 por los estudiantes de la Escuela de Minas de Ouro Preto y desde entonces se ha especializado en la publicación de artículos en las áreas de la Ingeniería Civil, Geología, Metalurgia y Materiales y, Minería y Mecánica y Energía. Su objetivo es servir como un medio de publicación para los trabajos técnicos y científicos originales de investigadores nacionales y extranjeros en esas áreas. Contribuciones originales (artículos y cartas) son aceptadas. Artículos de revisión dependen de la invitación y/o análisis de los Editores. El envío de artículos para su publicación implica que el trabajo no ha sido publicado previamente, que no está siendo presentado para su publicación en otra revista y no se publicará en otro lugar, en la misma forma, sin el permiso, por escrito, de los Editores/Autores.