Effects of pulse period and frequency content of ground motion records on fragility curves of BRBFs

Effects of pulse period and frequency content of ground motion records on fragility curves of BRBFs | 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 Effects of pulse period and frequency content of ground motion records on fragility curves of BRBFs Saman Yaghmaei-Sabegh, Maryam Ranjbari This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-5934638/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 This study aims to estimate the fragility curves of buckling-restrained braced frames (BRBFs) subjected to pulse-like excitations at collapse prevention (CP) and immediate occupancy (IO) performance levels. To this end, 4, 8, 12, and 15-storey steel frames with mega configuration BRBs were modeled using a finite element approach, and fragility analyses were carried out for the records classified based on pulse period (TP) and the ratio of PGA/PGV (peak ground acceleration to peak ground velocity) as the indicator of frequency content. The result showed that for high-rise BRBFs, collapse probability differences between the records with TP2s are at least 45% and 25% at the MCE and DBE levels, respectively, in which records with larger TP lead to severe damage. Also, analyses indicated that by increasing PGA/PGV ratio in TP<2s records, collapse probabilities for shorter BRBFs decrease where the highest collapse probabilities could be related to records with PGA/PGV<1g.s/cm. Buckling-restrained braced frames (BRBFs) Near-fault pulse-like motions Incremental dynamic analysis (IDA) Pulse period (TP) Frequency content Fragility curve 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. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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-5934638","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":410936142,"identity":"2ff1db14-658a-4838-b80c-dec8583f2426","order_by":0,"name":"Saman Yaghmaei-Sabegh","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAABBUlEQVRIiWNgGAWjYLACxgYgwcx8AMTggYpJEKOFLbGBRC0MPIYNEAYBIN/AY/jx645t8vzsPN8f/NxxT0Z+RgLjhx8MFvm4tBgc4DGWlj1z23BmM+/Gxt4zxTyMMxKYJXsYJCxx2WjAwGMgLdl2m3HDYd6NDbxtCTzMEgkM0kC/GOBxmPFvoBb7/Yd5Hjb+BWphk0hg/o1PC8MBHjPJj223Ezcw8zA2g2zhkUhgw2uLwQG2MmvGttvJMw6zGc6WPZPAI8HzsM2yxwCfw5g33/zZdtu2v//wg49vdyTYy7cnH77xo6IOt8PkXxgw86AKgWIHtwYgYH/A+AOf/CgYBaNgFIwCALDPUQZbqaHhAAAAAElFTkSuQmCC","orcid":"","institution":"University of Tabriz","correspondingAuthor":true,"prefix":"","firstName":"Saman","middleName":"","lastName":"Yaghmaei-Sabegh","suffix":""},{"id":410936143,"identity":"5eee81d8-f663-469b-8dd4-05b9b615c6d2","order_by":1,"name":"Maryam Ranjbari","email":"","orcid":"","institution":"University of Tabriz","correspondingAuthor":false,"prefix":"","firstName":"Maryam","middleName":"","lastName":"Ranjbari","suffix":""}],"badges":[],"createdAt":"2025-01-31 08:08:17","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-5934638/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-5934638/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":75607444,"identity":"380ccf62-3b75-49a5-9aec-0533bcb1d0ee","added_by":"auto","created_at":"2025-02-06 09:39:08","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1321346,"visible":true,"origin":"","legend":"","description":"","filename":"mainfile.pdf","url":"https://assets-eu.researchsquare.com/files/rs-5934638/v1_covered_2eacbf5c-348a-41df-87b2-8df5e36f3696.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Effects of pulse period and frequency content of ground motion records on fragility curves of BRBFs","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":"Buckling-restrained braced frames (BRBFs), Near-fault pulse-like motions, Incremental dynamic analysis (IDA), Pulse period (TP), Frequency content, Fragility curve","lastPublishedDoi":"10.21203/rs.3.rs-5934638/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-5934638/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"This study aims to estimate the fragility curves of buckling-restrained braced frames (BRBFs) subjected to pulse-like excitations at collapse prevention (CP) and immediate occupancy (IO) performance levels. 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