Experimental study of high strength concrete-filled circular tubular columns under eccentric loading
The paper describes 37 tests conducted on slender circular tubular columns filled with normal and high strength concrete subjected to eccentric axial load. The test parameters were the nominal strength of concrete (30, 70 and 90 MPa), the diameter to thickness ratio Dt, the eccentricity ratio eD and...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2011 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/59989 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/59989 |
| Access Level: | acceso abierto |
| Palabra clave: | Buckling Composite column Concrete-filled tubular columns High strength concrete Column slenderness Concrete contribution Design load Ductile behavior Eccentric loading Eccentricity ratios Eurocodes Experimental studies High strength concretes Load carrying capacities Normal strength concretes Performance indices Strength indexes Strength of concrete Test parameters Thickness ratio Tubular columns Ultimate loads Concretes Safety factor Tankers (ships) Tubular steel structures MECANICA DE LOS MEDIOS CONTINUOS Y TEORIA DE ESTRUCTURAS INGENIERIA DE LA CONSTRUCCION |
| Sumario: | The paper describes 37 tests conducted on slender circular tubular columns filled with normal and high strength concrete subjected to eccentric axial load. The test parameters were the nominal strength of concrete (30, 70 and 90 MPa), the diameter to thickness ratio Dt, the eccentricity ratio eD and the column slenderness (LD). The experimental ultimate load of each test was compared with the design loads from Eurocode 4, which limits the strength of concrete up to 50 MPa. The aim of the paper is to establish the advisability of the use of high strength concretes as opposed to that of normal strength concretes by comparing three performance indices: concrete contribution ratio, strength index and ductility index. The results show for the limited cases analyzed that the use of high strength concrete for slender composite columns is interesting since this achieves ductile behavior despite the increase in load-carrying capacity is not greatly enhanced. © 2010 Elsevier Ltd. All rights reserved. |
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