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dc.contributor.authorZhang, W-H.
dc.contributor.authorWang, R.
dc.contributor.authorZhao, H.
dc.contributor.authorLam, Dennis
dc.contributor.authorChen, P.
dc.date.accessioned2022-03-18T13:00:01Z
dc.date.accessioned2022-03-23T12:41:22Z
dc.date.available2022-03-18T13:00:01Z
dc.date.available2022-03-23T12:41:22Z
dc.date.issued2022-04
dc.identifier.citationZhang W-H, Wang R, Zhao H et al (2022) Axial-load response of CFST stub columns with external stainless steel and recycled aggregate concrete: Testing, mechanism analysis and design. Engineering Structures. 256: 113968.en_US
dc.identifier.urihttp://hdl.handle.net/10454/18801
dc.descriptionYesen_US
dc.description.abstractRecycled aggregate concrete filled stainless steel tube (RAC-FSST) is a new type of composite member combining the advantage of stainless steel and RAC. In this paper, a total of twenty-four RAC-FSST stub columns were tested under axial load, considering the influences of coarse recycled aggregate (CRA) content, steel ratios and compressive strengths of RAC. The obtained results, including the failure patterns, responses of axial load vs. deformation, stress states of external stainless steel tube and inner RAC and confinement effects, were systematically analyzed. Results indicated that all specimens presented good ductility and high residual strengths after reaching the maximum axial load. The elastic stiffness of RAC-FSSTs obviously declined with the increasing CRA content, while the strain at the ultimate load was larger. The inclusion of CRA could advance the occurrence of the confinement and lead to lower confining stress. Based on the experimental results, an analytical model with consideration of confinement action was developed to predict the axial response of RAC-FSST stub columns. Besides, the current design provisions for the normal CFST and RAC-FST members were employed to evaluate their applicability to RAC-FSSTs. In general, the design rules EN 1994-1-1:2004, GB 50936-2014 and T/CECS 625-2019 gave a conservative and relatively accurate prediction on ultimate strength of RAC-FSST stub columns.en_US
dc.description.sponsorshipThis work was supported by the National Natural Science Foundation.en_US
dc.language.isoenen_US
dc.rights© 2022 Elsevier Ltd. All rights reserved. Reproduced in accordance with the publisher's self-archiving policy. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.en_US
dc.subjectConcrete filled steel tubeen_US
dc.subjectStainless steelen_US
dc.subjectRecycled aggregatesen_US
dc.subjectConfinement effecten_US
dc.subjectStress-strain responseen_US
dc.subjectDesign provisionsen_US
dc.titleAxial-load response of CFST stub columns with external stainless steel and recycled aggregate concrete: Testing, mechanism analysis and designen_US
dc.status.refereedYesen_US
dc.date.Accepted2022-01-30
dc.date.application2022-02-12
dc.typeArticleen_US
dc.type.versionAccepted manuscripten_US
dc.identifier.doihttps://doi.org/10.1016/j.engstruct.2022.113968
dc.rights.licenseCC-BY-NC-NDen_US
dc.date.updated2022-03-18T13:00:08Z
refterms.dateFOA2022-03-23T12:41:47Z
dc.openaccess.statusopenAccessen_US


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