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dc.contributor.authorDafu,Cao,
dc.contributor.authorGe, W.
dc.contributor.authorZhang, Z.
dc.contributor.authorAshour, Ashraf
dc.contributor.authorJiang, H.
dc.contributor.authorLiu, Y.
dc.contributor.authorLi, S.
dc.contributor.authorCao, D.
dc.date.accessioned2023-09-13T12:39:50Z
dc.date.accessioned2023-09-29T08:34:40Z
dc.date.available2023-09-13T12:39:50Z
dc.date.available2023-09-29T08:34:40Z
dc.date.issued2023-12
dc.identifier.citationDafu C, Ge W, Zhang Z et al (2023) Investigation on flexural behavior of steel-UHPC composite beams with steel shear keys. Journal of Constructional Steel Research. 211: 108158.en_US
dc.identifier.urihttp://hdl.handle.net/10454/19588
dc.descriptionYesen_US
dc.description.abstractTo investigate the flexural performance of steel-UHPC (ultra-high performance concrete) composite beams with welded steel shear keys (SSK), eight specimens were experimental studied by four-point bending test. The finite element (FE) models were established based on the experimental results, then, the failure mode, load, deflection, strain and relative interface slip were parametric analyzed. The influences of strength, dimensions and configuration of upper concrete slab, steel beams as well as SSK on flexural performance, in terms of load-deflection response, ductility and ultimate energy dissipation, were studied. The experimental results show that steel-UHPC composite beams have superior bearing capacity, deformation capacity, ductility and energy dissipation ability when compared with steel-NSC (normal strength concrete) composite counterparts. Increasing the height of upper concrete slab has a significant effect on improving bending capacity and flexural stiffness, while increasing the width has a significant effect on enhancing deformation, ductility and ultimate energy dissipation. Increasing the yield strength, thickness of web and flange of steel beams has significant effect on improving bending capacity. Reducing the SSK spacing or increasing the yield strength of SSK, height and thickness slightly improve the cracking, yield and ultimate loads, reduce deflections, enhance the flexural stiffness, slightly weakens the ductility and ultimate energy dissipation. Besides, four types of failure modes were defined, based on reasonable assumptions, formulae for bearing capacity were proposed, and the predicted results fit well with experimental results. The results can be taken as reference for the design and application of steel-UHPC composite beams in long-span and heavy-load structures.en_US
dc.description.sponsorshipThe authors would like to acknowledge the financial support to the work by the Natural Science Foundation of Jiangsu Province, China (BK20201436), High-End Foreign Experts Project of Ministry of Science and Technology, China (G2022014054L), Science and Technology Project of Jiangsu Construction System (2021ZD06, 2018ZD047), Science and Technology Cooperation Fund Project of Yangzhou City and Yangzhou University (YZU212105, YZ2022194), Science and Technology Project of Yangzhou Construction System (202309, 202312, 202204).en_US
dc.language.isoenen_US
dc.rights© 2023 Elsevier. 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.subjectSteel-UHPC composite beamen_US
dc.subjectFlexural behavioren_US
dc.subjectSteel shear keyen_US
dc.subjectParametric studyen_US
dc.subjectBearing capacityen_US
dc.titleInvestigation on flexural behavior of steel-UHPC composite beams with steel shear keysen_US
dc.status.refereedYesen_US
dc.date.Accepted2023-08-07
dc.date.application2020-08-11
dc.typeArticleen_US
dc.date.EndofEmbargo2024-08-11
dc.type.versionAccepted manuscripten_US
dc.description.publicnotesThe full text of this article will be released for public view at the end of the publisher embargo on 11th Aug 2024.en_US
dc.identifier.doihttps://doi-org.brad.idm.oclc.org/10.1016/j.jcsr.2023.108158
dc.rights.licenseCC-BY-NC-NDen_US
dc.date.updated2023-09-13T12:39:53Z
refterms.dateFOA2023-09-29T08:35:13Z
dc.openaccess.statusembargoedAccessen_US


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