Optimal Design of CFRP Plates For Strengthening RC Flat Slab-Column Connections: Parametric Study and GWO-Based Optimization

Optimal Design of CFRP Plates For Strengthening RC Flat Slab-Column Connections: Parametric Study and GWO-Based Optimization | 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 Research Article Optimal Design of CFRP Plates For Strengthening RC Flat Slab-Column Connections: Parametric Study and GWO-Based Optimization Zana Kohneposhi, Hadi Azizian, Omid Haddad, Seyed Jamil Ghaderi This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4280028/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract The present study assesses the efficacy of carbon-fiber-reinforced polymer (CFRP) plates in enhancing the strengthening of reinforced concrete (RC) flat slab-column connections under both punching shear and seismic loading conditions. A comprehensive parametric analysis is conducted using the Abaqus finite element software, encompassing 33 distinct models with variations in key parameters including loading conditions, number of fiber layers, orientation, thicknesses, and dimensions of the CFRP plate. The numerical model is validated through experimental testing of a laboratory-scale prototype, demonstrating a mean error of 5.2% relative to experimental data, indicating satisfactory accuracy. Furthermore, an optimal design approach for CFRP plates is developed employing the gray wolf optimization (GWO) algorithm. The primary objective of this optimization framework is to mitigate damage in the slab-column connection under loading. Computational simulations are performed simultaneously in Abaqus and MATLAB to determine the optimal geometric parameters of CFRP for retrofitting the connection. The results demonstrate that CFRP plates with optimal parameters can reduce more than 90% of the damage incurred at the slab-column connection. The results, together with the CFRP optimization model developed using GWO, can be practically utilized for the optimal design of CFRP plates to reinforce structures. RC slab-column connection CFRP optimal design seismic behavior GWO Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted 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. We do this by developing innovative software and high quality services for the global research community. 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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-4280028","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":292810589,"identity":"f5f653f8-1ecb-4f3b-8039-b98295a190a3","order_by":0,"name":"Zana Kohneposhi","email":"","orcid":"","institution":"Islamic Azad University","correspondingAuthor":false,"prefix":"","firstName":"Zana","middleName":"","lastName":"Kohneposhi","suffix":""},{"id":292810590,"identity":"ecdc3481-19c6-4fbf-814e-37bf04f09479","order_by":1,"name":"Hadi Azizian","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA7ElEQVRIiWNgGAWjYBACAyA6AKR5GJiB5AcDqHACsVoYZxCrBc5h5iHGYebshzceYKipk5FvZ3722KbALrGB/fADhod7cGux7EkrOMBwjI2HsZnN3DjHIDmxgSfNgCHhGR6HHcgB+oWNh4eZmcFMOseAObGBIQfolwN4tJx/A9TyT4KHjZn9m7SFQX1iA/8bAlpuAG1hbDMAWsNjJs1gcDixQYKQLTeeFRxI7EvgkWDmKZPsMThu3CbxzOAAfoclb/7w4VudvXz/8W0SP/5Uy/bzJz98+AOPFjBIQOawATEhDaNgFIyCUTAKCAAAesZI3LrjmI4AAAAASUVORK5CYII=","orcid":"","institution":"Islamic Azad University","correspondingAuthor":true,"prefix":"","firstName":"Hadi","middleName":"","lastName":"Azizian","suffix":""},{"id":292810591,"identity":"388ddd55-0c4c-4127-aa49-a836ebf341c7","order_by":2,"name":"Omid Haddad","email":"","orcid":"","institution":"Islamic Azad University","correspondingAuthor":false,"prefix":"","firstName":"Omid","middleName":"","lastName":"Haddad","suffix":""},{"id":292810592,"identity":"a85c92e7-41da-495b-90f8-ec4c27b32a33","order_by":3,"name":"Seyed Jamil Ghaderi","email":"","orcid":"","institution":"Islamic Azad University","correspondingAuthor":false,"prefix":"","firstName":"Seyed","middleName":"Jamil","lastName":"Ghaderi","suffix":""}],"badges":[],"createdAt":"2024-04-17 07:23:22","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-4280028/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-4280028/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":65049151,"identity":"51338f9b-fc96-49d8-b02f-f85aa2e78707","added_by":"auto","created_at":"2024-09-23 05:34:36","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1078961,"visible":true,"origin":"","legend":"","description":"","filename":"PAPEROptimalDesignOfCFRPPlates.pdf","url":"https://assets-eu.researchsquare.com/files/rs-4280028/v1_covered_8f0db0ec-3471-4114-85c9-1e4f6ba6676b.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Optimal Design of CFRP Plates For Strengthening RC Flat Slab-Column Connections: Parametric Study and GWO-Based Optimization","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"RC slab-column connection, CFRP, optimal design, seismic behavior, GWO","lastPublishedDoi":"10.21203/rs.3.rs-4280028/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4280028/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eThe present study assesses the efficacy of carbon-fiber-reinforced polymer (CFRP) plates in enhancing the strengthening of reinforced concrete (RC) flat slab-column connections under both punching shear and seismic loading conditions. A comprehensive parametric analysis is conducted using the Abaqus finite element software, encompassing 33 distinct models with variations in key parameters including loading conditions, number of fiber layers, orientation, thicknesses, and dimensions of the CFRP plate. The numerical model is validated through experimental testing of a laboratory-scale prototype, demonstrating a mean error of 5.2% relative to experimental data, indicating satisfactory accuracy. Furthermore, an optimal design approach for CFRP plates is developed employing the gray wolf optimization (GWO) algorithm. The primary objective of this optimization framework is to mitigate damage in the slab-column connection under loading. Computational simulations are performed simultaneously in Abaqus and MATLAB to determine the optimal geometric parameters of CFRP for retrofitting the connection. The results demonstrate that CFRP plates with optimal parameters can reduce more than 90% of the damage incurred at the slab-column connection. The results, together with the CFRP optimization model developed using GWO, can be practically utilized for the optimal design of CFRP plates to reinforce structures.\u003c/p\u003e","manuscriptTitle":"Optimal Design of CFRP Plates For Strengthening RC Flat Slab-Column Connections: Parametric Study and GWO-Based Optimization","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2024-04-22 18:24:22","doi":"10.21203/rs.3.rs-4280028/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"e357b6ba-ded7-413b-8f01-41598d819ba1","owner":[],"postedDate":"April 22nd, 2024","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[],"tags":[],"updatedAt":"2024-09-23T05:18:29+00:00","versionOfRecord":[],"versionCreatedAt":"2024-04-22 18:24:22","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-4280028","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-4280028","identity":"rs-4280028","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}