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dc.contributor.author | Medall-Martos, David![]() |
es_ES |
dc.contributor.author | Ibáñez, Carmen![]() |
es_ES |
dc.contributor.author | ALBERO GABARDA, VICENTE![]() |
es_ES |
dc.contributor.author | Espinós Capilla, Ana![]() |
es_ES |
dc.contributor.author | Romero, Manuel L.![]() |
es_ES |
dc.date.accessioned | 2024-07-01T18:36:30Z | |
dc.date.available | 2024-07-01T18:36:30Z | |
dc.date.issued | 2023-08 | es_ES |
dc.identifier.issn | 0263-8231 | es_ES |
dc.identifier.uri | http://hdl.handle.net/10251/205621 | |
dc.description.abstract | [EN] Technological advances in the development of steel-concrete composite structures have led to the introduction of novel types of sections in the sought of higher load-bearing capacities. Particularly for composite columns, the axial capacity of concrete-filled steel tubular (CFST) sections may be enhanced by the introduction of an open steel profile embedded within the concrete infill, forming the so-called steel-reinforced concrete-filled steel tubular (SR-CFST) columns. An important aspect that should be revised, in order to safely use these sections in design, is their performance after a fire. In this experimental program, six SR-CFST stub columns are tested in the post-fire situation. Two series of columns comprising three circular and three square sections with the same steel usage are tested for comparison purposes. The size of the inner steel profile is varied in order to investigate its effect over the post-fire capacity of the columns. The specimens were initially exposed to elevated temperatures inside an electric furnace, and then cooled to ambient temperature; afterwards compressive axial load was applied gradually until failure, to ascertain their residual capacity. The experimental results show the high ductility of the SR-CFST stub columns after heating, with the circular specimens reaching higher post-fire peak loads than their square counterparts. This load increases with the size of the embedded steel profile. The post-fire capacities of the columns are evaluated through the Residual Strength Index, showing similar values for both circular and square SR-CFST columns. Finally, a design equation is proposed to facilitate the evaluation of the post-fire compression resistance of SR-CFST columns, as an extension of the existing room temperature design equation in Eurocode 4 Part 1-2 for CFST columns, accounting for the degradation of the steel and concrete after fire exposure through the corresponding residual factors. | es_ES |
dc.description.sponsorship | The authors would like to express their sincere gratitude for the help provided through the Grant PID2019-105908RB-I00 and for the first author's pre-doctoral contract through the Grant PRE2020-093106 funded by MCIN/AEI/10.13039/501100011033 and by "ESF Investing in your future". The authors are deeply grateful to Dr Enrique Serra for his help and assessment to prepare and conduct the experiments and Dr Andres Lapuebla-Ferri and Dr David Pons for their help in conducting the material tests. Finally, the authors would like to acknowledge the funding for open access charge from CRUE-Universitat Politecnica de Valencia. | es_ES |
dc.language | Inglés | es_ES |
dc.publisher | Elsevier | es_ES |
dc.relation.ispartof | Thin-Walled Structures | es_ES |
dc.rights | Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) | es_ES |
dc.subject | Steel-reinforced concrete-filled steel tubular columns | es_ES |
dc.subject | Post-fire behaviour | es_ES |
dc.subject | Residual Strength Index | es_ES |
dc.subject | Design equations | es_ES |
dc.subject | Eurocode 4 | es_ES |
dc.subject.classification | INGENIERIA DE LA CONSTRUCCION | es_ES |
dc.subject.classification | MECANICA DE LOS MEDIOS CONTINUOS Y TEORIA DE ESTRUCTURAS | es_ES |
dc.title | Experimental residual capacity of steel-reinforced concrete-filled steel tubular stub columns after fire exposure | es_ES |
dc.type | Artículo | es_ES |
dc.identifier.doi | 10.1016/j.tws.2023.110900 | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/AEI//PID2019-105908RB-I00//USO DE MATERIALES DE ALTAS PRESTACIONES PARA LA MEJORA DE LA RESISTENCIA FRENTE AL FUEGO DE COLUMNA MIXTAS CON SECCIONES DE ACERO EMBEBIDAS EN HORMIGON/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/AEI//PRE2020-093106//USO DE MATERIALES DE ALTAS PRESTACIONES PARA LA MEJORA DE LA RESISTENCIA FRENTE AL FUEGO DE COLUMNAS MIXTAS CON SECCIONES DE ACERO EMBEBIDAS EN HORMIGON/ | es_ES |
dc.rights.accessRights | Abierto | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Escuela Técnica Superior de Ingenieros Industriales - Escola Tècnica Superior d'Enginyers Industrials | es_ES |
dc.description.bibliographicCitation | Medall-Martos, D.; Ibáñez, C.; Albero Gabarda, V.; Espinós Capilla, A.; Romero, ML. (2023). Experimental residual capacity of steel-reinforced concrete-filled steel tubular stub columns after fire exposure. Thin-Walled Structures. 189. https://doi.org/10.1016/j.tws.2023.110900 | es_ES |
dc.description.accrualMethod | S | es_ES |
dc.relation.publisherversion | https://doi.org/10.1016/j.tws.2023.110900 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.description.volume | 189 | es_ES |
dc.relation.pasarela | S\495678 | es_ES |
dc.contributor.funder | European Social Fund | es_ES |
dc.contributor.funder | AGENCIA ESTATAL DE INVESTIGACION | es_ES |
dc.contributor.funder | Universitat Politècnica de València | es_ES |