Seismic Performance of Reinforced Concrete Buildings in the 2021 Mamuju-Majene Earthquake Mw. 6.2, Sulawesi Indonesia

Seismic Performance of Reinforced Concrete Buildings in the 2021 Mamuju-Majene Earthquake Mw. 6.2, Sulawesi Indonesia | 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 Seismic Performance of Reinforced Concrete Buildings in the 2021 Mamuju-Majene Earthquake Mw. 6.2, Sulawesi Indonesia Ardy Arsyad, Muhammad Asyhari, Mufidatul Azmi Kaharuddin This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4862165/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 seismic performance of RC buildings in Mamuju in West Sulawesi of Indonesia during the 2021 Mamuju-Majene earthquake is examined. Despite the earthquake's recorded acceleration being just 0.26 g, or 25% of the predicted acceleration (1.027 g), it has resulted in the collapse of many RC buildings across the city of Mamuju. We conducted a post-earthquake investigation to uncover the mechanism of collapsing RC buildings, with the aim of learning lessons and gaining insights for improvement in RC building design. Extensive geotechnical and geophysical investigations reveal the ground motion in the city reached 0.68 g, or about 66% of the anticipated ground motion specified for the city of Mamuju on the provision of the Indonesia Code (SNI 1726-2019). This observation suggests that the traditional design of the current RC buildings may perform seismically poorly. Therefore, elastic linear modal analysis and non-linear static and dynamic analysis were conducted to uncover the failure process of the RC building during the earthquake. The results reveal that the collapse of the RC building starts with the formation of plastic hinges at the column members on the ground floor, whereas the column members on the first and second levels remain in an elastic state. Under these circumstances, the RC building's roof displacement exceeded the critical displacement for collapse prevention. For future prevention, a revised structural design has been suggested to enhance the seismic resistance of the RC building with target performance following the Indonesia Code SNI 1726-2019. Increasing the cross-section area of the column members of RC building over a fixed base foundation can result in a more rigid structure and a lower inter-story drift ratio. the 2021 Mamuju – Majene Earthquake Pushover analysis Non-linear Time 30 Histories Analysis Plastic hinges collapsing mechanism Sulawesi Indonesia Full Text 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-4862165","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":337059509,"identity":"1a801b19-8b4c-4d8f-920e-5f9a2892992c","order_by":0,"name":"Ardy Arsyad","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA4ElEQVRIiWNgGAWjYHACAyidfICBsYE0LWkJJGvJMSBOC//sw9skfu6pS+xvz/km8XOHjRwD++GjG/BpkTiXVibZ8+xw4owzb7dJ9p5JM2bgSUu7gdeaMzxmEjwHDiQ23MjdJsHbdjixQYLHDK8WeaAWyT8H6hLn38h5JvmXGC0GQC3SPAeYEzfcyGGTJsoWwzNsxdYyBw4bbzzzzNhati3NmI2QX+TOMG+8+eZAney848kPb75ts5HjZz98DL/3GRhYJICEYwOUwcBGQDkIMH8AEvYwxigYBaNgFIwCDAAA7PRQlZNsPjUAAAAASUVORK5CYII=","orcid":"https://orcid.org/0000-0002-9513-6386","institution":"Universitas Hasanuddin Fakultas Teknik","correspondingAuthor":true,"prefix":"","firstName":"Ardy","middleName":"","lastName":"Arsyad","suffix":""},{"id":337059510,"identity":"a9d4b6a5-f2c7-42ac-841d-27b20e4352c0","order_by":1,"name":"Muhammad Asyhari","email":"","orcid":"","institution":"Universitas Hasanuddin Fakultas Teknik","correspondingAuthor":false,"prefix":"","firstName":"Muhammad","middleName":"","lastName":"Asyhari","suffix":""},{"id":337059511,"identity":"40d6dbee-b96a-4428-b782-813e4fd34c45","order_by":2,"name":"Mufidatul Azmi Kaharuddin","email":"","orcid":"","institution":"Universitas Hasanuddin Fakultas Teknik","correspondingAuthor":false,"prefix":"","firstName":"Mufidatul","middleName":"Azmi","lastName":"Kaharuddin","suffix":""}],"badges":[],"createdAt":"2024-08-05 13:00:32","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-4862165/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-4862165/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":80484404,"identity":"5874c9c0-ef94-423a-897e-a1a86be5b054","added_by":"auto","created_at":"2025-04-13 15:03:19","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":5077948,"visible":true,"origin":"","legend":"","description":"","filename":"manuscriptfinalseismicPerformmamuju.pdf","url":"https://assets-eu.researchsquare.com/files/rs-4862165/v1_covered_d3d92524-ba41-4a18-a046-51a8ca0e9a73.pdf"}],"financialInterests":"","formattedTitle":"Seismic Performance of Reinforced Concrete Buildings in the 2021 Mamuju-Majene Earthquake Mw. 6.2, Sulawesi Indonesia","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":"the 2021 Mamuju – Majene Earthquake, Pushover analysis, Non-linear Time 30 Histories Analysis, Plastic hinges, collapsing mechanism, Sulawesi Indonesia","lastPublishedDoi":"10.21203/rs.3.rs-4862165/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4862165/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"The seismic performance of RC buildings in Mamuju in West Sulawesi of Indonesia during the 2021 Mamuju-Majene earthquake is examined. Despite the earthquake's recorded acceleration being just 0.26 g, or 25% of the predicted acceleration (1.027 g), it has resulted in the collapse of many RC buildings across the city of Mamuju. We conducted a post-earthquake investigation to uncover the mechanism of collapsing RC buildings, with the aim of learning lessons and gaining insights for improvement in RC building design. Extensive geotechnical and geophysical investigations reveal the ground motion in the city reached 0.68 g, or about 66% of the anticipated ground motion specified for the city of Mamuju on the provision of the Indonesia Code (SNI 1726-2019). This observation suggests that the traditional design of the current RC buildings may perform seismically poorly. Therefore, elastic linear modal analysis and non-linear static and dynamic analysis were conducted to uncover the failure process of the RC building during the earthquake. The results reveal that the collapse of the RC building starts with the formation of plastic hinges at the column members on the ground floor, whereas the column members on the first and second levels remain in an elastic state. Under these circumstances, the RC building's roof displacement exceeded the critical displacement for collapse prevention. For future prevention, a revised structural design has been suggested to enhance the seismic resistance of the RC building with target performance following the Indonesia Code SNI 1726-2019. 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