A Rapid Diagnosis Method Based on the Strain Influence Line for T-beam Bridge Damage

A Rapid Diagnosis Method Based on the Strain Influence Line for T-beam Bridge Damage | 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 A Rapid Diagnosis Method Based on the Strain Influence Line for T-beam Bridge Damage Nianchun Deng, Wenhao Xue, Zhongqing Han, Tianzhi Hao, Xianhui Hu, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6240905/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 29 Sep, 2025 Read the published version in Scientific Reports → Version 1 posted 10 You are reading this latest preprint version Abstract Bridge damage induces immediate stiffness reductions in bridge structures, manifested as variations in static parameters such as strain and deflection, which pose significant safety risks. This paper presents a rapid damage diagnosis method for T-beam bridges using strain influence lines. The method derives the analytical strain influence line formula for T-beam bridges and examines its variation under transverse and longitudinal damage conditions. By analyzing peak values and envelope area shifts in the strain influence line, a diagnostic difference curve is generated, enabling the development of a qualitative damage assessment system. This system localizes damaged regions and provides transverse/longitudinal positioning and quantitative evaluation methods for T-beam bridge damage. Experimental validation using a scaled T-beam bridge model confirms the method’s applicability and feasibility for damaged-state structural assessment. Physical sciences/Engineering/Civil engineering Physical sciences/Materials science/Theory and computation T-beam bridge Damage Rapid diagnosis Strain Influence line Full Text Additional Declarations No competing interests reported. Supplementary Files experimentaldata.zip Cite Share Download PDF Status: Published Journal Publication published 29 Sep, 2025 Read the published version in Scientific Reports → Version 1 posted Editorial decision: Revision requested 09 Apr, 2025 Reviews received at journal 07 Apr, 2025 Reviews received at journal 27 Mar, 2025 Reviewers agreed at journal 26 Mar, 2025 Reviewers agreed at journal 25 Mar, 2025 Reviewers invited by journal 25 Mar, 2025 Editor assigned by journal 24 Mar, 2025 Editor invited by journal 20 Mar, 2025 Submission checks completed at journal 18 Mar, 2025 First submitted to journal 17 Mar, 2025 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-6240905","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":434708681,"identity":"3956943f-e7f2-4809-81e5-57910580d352","order_by":0,"name":"Nianchun Deng","email":"","orcid":"","institution":"Guangxi University","correspondingAuthor":false,"prefix":"","firstName":"Nianchun","middleName":"","lastName":"Deng","suffix":""},{"id":434708684,"identity":"04260910-2988-40cd-9918-6bd98685f9b6","order_by":1,"name":"Wenhao Xue","email":"","orcid":"","institution":"Guangxi 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This paper presents a rapid damage diagnosis method for T-beam bridges using strain influence lines. The method derives the analytical strain influence line formula for T-beam bridges and examines its variation under transverse and longitudinal damage conditions. By analyzing peak values and envelope area shifts in the strain influence line, a diagnostic difference curve is generated, enabling the development of a qualitative damage assessment system. This system localizes damaged regions and provides transverse/longitudinal positioning and quantitative evaluation methods for T-beam bridge damage. Experimental validation using a scaled T-beam bridge model confirms the method\u0026rsquo;s applicability and feasibility for damaged-state structural assessment.\u003c/p\u003e","manuscriptTitle":"A Rapid Diagnosis Method Based on the Strain Influence Line for T-beam Bridge Damage","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-04-02 10:39:32","doi":"10.21203/rs.3.rs-6240905/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"decision","content":"Revision requested","date":"2025-04-09T10:12:29+00:00","index":"","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2025-04-07T08:18:41+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2025-03-27T08:43:00+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"298153584042606350124336192325195810332","date":"2025-03-26T04:21:49+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"331612182327345609532398706201461486595","date":"2025-03-25T22:19:13+00:00","index":"hide","fulltext":""},{"type":"reviewersInvited","content":"","date":"2025-03-25T22:16:21+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2025-03-24T07:28:18+00:00","index":"","fulltext":""},{"type":"editorInvited","content":"","date":"2025-03-20T08:06:35+00:00","index":"","fulltext":""},{"type":"checksComplete","content":"","date":"2025-03-18T14:31:25+00:00","index":"","fulltext":""},{"type":"submitted","content":"Scientific Reports","date":"2025-03-17T04:23:48+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":"04887028-cd31-4d2f-9cbf-10b364e7cf45","owner":[],"postedDate":"April 2nd, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"published-in-journal","subjectAreas":[{"id":46286366,"name":"Physical sciences/Engineering/Civil engineering"},{"id":46286367,"name":"Physical sciences/Materials science/Theory and computation"}],"tags":[],"updatedAt":"2025-10-06T16:02:18+00:00","versionOfRecord":{"articleIdentity":"rs-6240905","link":"https://doi.org/10.1038/s41598-025-07233-w","journal":{"identity":"scientific-reports","isVorOnly":false,"title":"Scientific Reports"},"publishedOn":"2025-09-29 15:57:36","publishedOnDateReadable":"September 29th, 2025"},"versionCreatedAt":"2025-04-02 10:39:32","video":"","vorDoi":"10.1038/s41598-025-07233-w","vorDoiUrl":"https://doi.org/10.1038/s41598-025-07233-w","workflowStages":[]},"version":"v1","identity":"rs-6240905","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-6240905","identity":"rs-6240905","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}