Monotonic and cyclic flexural behaviour of square/rectangular rubberized concrete-filled steel tubes

• Tipo: Artigo em Revista Científica Internacional
• Data: 2017

Autores

Silva, A (Autor) Outra; Jiang, Y (Autor) Outra; J. M. Castro (Autor) FEUP; Silvestre, N (Autor) Outra; Monteiro, R (Autor) Outra

Revista

Título: Journal of Constructional Steel Research

Vol. 139

Páginas: 385-396

ISSN: 0143-974X

Editora: Elsevier

Indexação

ISI Web of Knowledge - 30 Citações

Scopus - 36 Citações

Outras Informações

ID Authenticus: P-00N-3BE

DOI: 10.1016/j.jcsr.2017.09.006

Abstract (EN): This paper focuses on the assessment of the behaviour of Concrete Filled Steel Tube (CFST) columns with square/rectangular cross-section, made with Rubberized Concrete (RuC), under flexural loading. The study aims to evaluate the differences between this type of composite members and typical CFST members made with standard concrete (StdC), namely in terms of the influence of the rubber aggregate replacement ratio on member strength, ductility, and energy dissipation capacity. The experimental campaign comprised the testing of 16 square members, 12 RuCFST and 4 StdCFST, and 4 rectangular RuCFSTs. A number of parameters were investigated, namely the cross-section slenderness (i.e., the width-to-thickness ratio of the steel tube), the aggregate replacement ratio (i.e., the percentage of sand aggregate of the concrete mixture that is substituted by rubber particles), axial load level and lateral loading type. The test results are compared with the member capacities obtained with the application of Eurocode 4. The results show a minimal influence of the type of concrete infill on the monotonic and cyclic behaviour of the members and also allow concluding that the European code is conservative in predicting the capacity of the specimens. Furthermore, the results obtained demonstrate that the cross-section slenderness has an important role on the behaviour of these members. Nonetheless, the requirements pertaining this parameter that are currently defined in Eurocodes 4 and 8 can be relaxed.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 12