Experiment and numerical analysis of prestressed unequal-walled rectangular concrete-filled steel box beams

Experiment and numerical analysis of prestressed unequal-walled rectangular concrete-filled steel box beams | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Experiment and numerical analysis of prestressed unequal-walled rectangular concrete-filled steel box beams Qi Su, Guangyuan Fu, Siping Li, Jian Yang This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-5110724/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 02 Jan, 2025 Read the published version in Scientific Reports → Version 1 posted 12 You are reading this latest preprint version Abstract When long-span beams undergo large deformation, the strength of the beam material cannot be fully utilized. To solve this problem, a prestressed unequal-walled rectangular concrete-filled steel box (PURCFSB) beam is proposed in this paper. The prestressed is added to the concrete-filled steel tubular (CFST) beam and the section is designed. This beam is an improved concrete-filled steel tubular (CFST) beam with flanges of unequal thickness; the upper part of the steel box contains concrete and the lower part is fitted with prestressed steel bars. Bending tests on ten PURCFSB beams with different concrete filling ratios and prestress levels show that prestress can increase the yield bending moment and delay the cracking of concrete. The appropriate filling ratio can improve the structure’s yield moment and ultimate bearing capacity and reduce its self-weight, while avoiding concrete cracking within the scope of work. Finite element analysis of the whole bending process of PURCFSB beams, carried out using ABAQUS software, yields results in good agreement with experiment. Parametric analysis (based on the validated finite-element model) of the effects of filling ratio and prestress level on bending performance shows that PURCFSB beams have good bearing capacity and deformation performance. Physical sciences/Engineering/Civil engineering Physical sciences/Engineering/Mechanical engineering prestressed partially filled steel box-concrete static test bending performance Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 02 Jan, 2025 Read the published version in Scientific Reports → Version 1 posted Editorial decision: Revision requested 12 Nov, 2024 Reviews received at journal 11 Nov, 2024 Reviewers agreed at journal 28 Oct, 2024 Reviews received at journal 25 Oct, 2024 Reviews received at journal 19 Oct, 2024 Reviewers agreed at journal 19 Oct, 2024 Reviewers agreed at journal 14 Oct, 2024 Reviewers invited by journal 08 Oct, 2024 Editor assigned by journal 08 Oct, 2024 Editor invited by journal 04 Oct, 2024 Submission checks completed at journal 02 Oct, 2024 First submitted to journal 18 Sep, 2024 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-5110724","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":377147124,"identity":"494f0844-ed5f-4343-baf3-41179813f888","order_by":0,"name":"Qi Su","email":"","orcid":"","institution":"Shanghai Jiao Tong University","correspondingAuthor":false,"prefix":"","firstName":"Qi","middleName":"","lastName":"Su","suffix":""},{"id":377147125,"identity":"856775ca-a4cc-4b68-bde9-5cd6deb5286b","order_by":1,"name":"Guangyuan Fu","email":"","orcid":"","institution":"Shanghai Jiao Tong University","correspondingAuthor":false,"prefix":"","firstName":"Guangyuan","middleName":"","lastName":"Fu","suffix":""},{"id":377147126,"identity":"f9d1d549-3d73-4ecf-b3eb-f9fc99a254ba","order_by":2,"name":"Siping Li","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAu0lEQVRIiWNgGAWjYBACPmYg8YGBDcyRIEoLG1AL4wwGNgkStAAxMw9UNZFa2NmfPbb5w1dncID54G0eBrs8IhzGY26c28YmYXCALdmahyG5mBgtbNK5DSAtPGbSPAwHEhsIa2F/Jm3xB6SF/xuxWhjMpBnYwLawEauFx9ywt41NcuZhNmPLOQbJhLXw8x9/9uDHn2P8fMebH954U2FHWAsDJGqOAWMHxDYgQj1USw1xSkfBKBgFo2BkAgB5lyzkIAZnlwAAAABJRU5ErkJggg==","orcid":"","institution":"Shanghai Jiao Tong University","correspondingAuthor":true,"prefix":"","firstName":"Siping","middleName":"","lastName":"Li","suffix":""},{"id":377147127,"identity":"2428ad50-c5f1-4b19-9411-a24dd65a2182","order_by":3,"name":"Jian Yang","email":"","orcid":"","institution":"Shanghai Jiao Tong University","correspondingAuthor":false,"prefix":"","firstName":"Jian","middleName":"","lastName":"Yang","suffix":""}],"badges":[],"createdAt":"2024-09-18 14:11:01","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-5110724/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-5110724/v1","draftVersion":[],"editorialEvents":[{"content":"https://doi.org/10.1038/s41598-024-84473-2","type":"published","date":"2025-01-02T15:57:34+00:00"}],"editorialNote":"","failedWorkflow":false,"files":[{"id":73093360,"identity":"e9ecc7a8-433c-4e59-94f7-fa86d9be7056","added_by":"auto","created_at":"2025-01-06 16:14:56","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1949880,"visible":true,"origin":"","legend":"","description":"","filename":"Manuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-5110724/v1_covered_9d8d3ea5-5509-4ece-947d-eb1655f6e687.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Experiment and numerical analysis of prestressed unequal-walled rectangular concrete-filled steel box beams","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":true,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"scientific-reports","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"scirep","sideBox":"Learn more about [Scientific Reports](http://www.nature.com/srep/)","snPcode":"","submissionUrl":"","title":"Scientific Reports","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Scientific Reports","inReviewEnabled":true,"inReviewRevisionsEnabled":true},"keywords":"prestressed, partially filled, steel box-concrete, static test, bending performance","lastPublishedDoi":"10.21203/rs.3.rs-5110724/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-5110724/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eWhen long-span beams undergo large deformation, the strength of the beam material cannot be fully utilized. To solve this problem, a prestressed unequal-walled rectangular concrete-filled steel box (PURCFSB) beam is proposed in this paper. The prestressed is added to the concrete-filled steel tubular (CFST) beam and the section is designed. This beam is an improved concrete-filled steel tubular (CFST) beam with flanges of unequal thickness; the upper part of the steel box contains concrete and the lower part is fitted with prestressed steel bars. Bending tests on ten PURCFSB beams with different concrete filling ratios and prestress levels show that prestress can increase the yield bending moment and delay the cracking of concrete. The appropriate filling ratio can improve the structure\u0026rsquo;s yield moment and ultimate bearing capacity and reduce its self-weight, while avoiding concrete cracking within the scope of work. Finite element analysis of the whole bending process of PURCFSB beams, carried out using ABAQUS software, yields results in good agreement with experiment. Parametric analysis (based on the validated finite-element model) of the effects of filling ratio and prestress level on bending performance shows that PURCFSB beams have good bearing capacity and deformation performance.\u003c/p\u003e","manuscriptTitle":"Experiment and numerical analysis of prestressed unequal-walled rectangular concrete-filled steel box beams","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2024-12-10 13:04:51","doi":"10.21203/rs.3.rs-5110724/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"decision","content":"Revision requested","date":"2024-11-12T11:47:12+00:00","index":"","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2024-11-11T14:33:30+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"267870086178160969254604478473912463817","date":"2024-10-28T09:31:40+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2024-10-25T17:43:09+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2024-10-20T03:20:40+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"131473682559007644217292673212385756547","date":"2024-10-19T12:05:45+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"166136345321274156810411259758978799426","date":"2024-10-14T17:03:46+00:00","index":"hide","fulltext":""},{"type":"reviewersInvited","content":"","date":"2024-10-08T19:11:38+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2024-10-08T19:00:44+00:00","index":"","fulltext":""},{"type":"editorInvited","content":"","date":"2024-10-04T19:40:48+00:00","index":"","fulltext":""},{"type":"checksComplete","content":"","date":"2024-10-02T08:20:33+00:00","index":"","fulltext":""},{"type":"submitted","content":"Scientific Reports","date":"2024-09-18T14:09:32+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"scientific-reports","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"scirep","sideBox":"Learn more about [Scientific Reports](http://www.nature.com/srep/)","snPcode":"","submissionUrl":"","title":"Scientific Reports","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Scientific Reports","inReviewEnabled":true,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"a46f33c7-7059-4be6-b312-3b506f8931fa","owner":[],"postedDate":"December 10th, 2024","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"published-in-journal","subjectAreas":[{"id":40148357,"name":"Physical sciences/Engineering/Civil engineering"},{"id":40148358,"name":"Physical sciences/Engineering/Mechanical engineering"}],"tags":[],"updatedAt":"2025-01-06T16:02:12+00:00","versionOfRecord":{"articleIdentity":"rs-5110724","link":"https://doi.org/10.1038/s41598-024-84473-2","journal":{"identity":"scientific-reports","isVorOnly":false,"title":"Scientific Reports"},"publishedOn":"2025-01-02 15:57:34","publishedOnDateReadable":"January 2nd, 2025"},"versionCreatedAt":"2024-12-10 13:04:51","video":"","vorDoi":"10.1038/s41598-024-84473-2","vorDoiUrl":"https://doi.org/10.1038/s41598-024-84473-2","workflowStages":[]},"version":"v1","identity":"rs-5110724","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-5110724","identity":"rs-5110724","version":["v1"]},"buildId":"qtupq5eGEP_6zYnWcrvyt","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}