Research on seismic isolation performance of nuclear power plant containment structures

Research on seismic isolation performance of nuclear power plant containment structures | 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 Research on seismic isolation performance of nuclear power plant containment structures Zhicheng Xue, Xiujun Cui, Qiang Pei, Jintu Zhong, Yongyi He, Yao Zhang, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-3791273/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 Non isolated structures have problems such as strong destructiveness and poor isolation effect when encountering earthquakes. Setting isolation bearings can extend the natural vibration period of the structure, reduce the horizontal seismic response of the structure, and also enhance the overall seismic performance of the structure.The new material - epoxy plate thick layer rubber isolation bearing has unique advantages compared to other bearings, such as effective energy absorption, simple construction, and low cost.This study establishes a three-dimensional isolated nuclear power plant containment structure based on the principle of similarity ratio, and compares and analyzes the acceleration, base reaction, and displacement responses of non isolated and isolated structures. At the same time, the incremental dynamic analysis method (IDA) is used to analyze the seismic vulnerability of the structure, and the isolation performance of the nuclear containment structure using epoxy plate thick layer rubber isolation bearings is comprehensively and deeply explored.The results show that the epoxy plate thick layer rubber isolation bearing effectively prolongs the natural vibration period of the structure, reduces the horizontal seismic response of the structure, and reduces the dome acceleration response by 66.55%, and the base horizontal shear force by 55.51%.Therefore, setting epoxy plate thick layer rubber isolation bearings in the isolation layer can effectively enhance the seismic performance of the structure, thereby improving the redundancy of the nuclear power plant containment structure. Keywords : epoxy plate thick layer rubber isolation bearing; Time history analysis; Seismic performance; Incremental dynamic analysis method. Physical sciences/Engineering/Civil engineering Physical sciences/Engineering/Energy infrastructure epoxy plate thick layer rubber isolation bearing Time history analysis Seismic performance Incremental dynamic analysis method 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-3791273","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":265216877,"identity":"1d9981e6-4aec-4dae-a99e-019c01a3d9e4","order_by":0,"name":"Zhicheng Xue","email":"","orcid":"","institution":"Guangdong University of Petrochemical Technology","correspondingAuthor":false,"prefix":"","firstName":"Zhicheng","middleName":"","lastName":"Xue","suffix":""},{"id":265216878,"identity":"024dc1d1-ca84-4d7d-8959-def8dbab095b","order_by":1,"name":"Xiujun Cui","email":"","orcid":"","institution":"Key Laboratory for Prediction \u0026 Control on 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Setting isolation bearings can extend the natural vibration period of the structure, reduce the horizontal seismic response of the structure, and also enhance the overall seismic performance of the structure.The new material - epoxy plate thick layer rubber isolation bearing has unique advantages compared to other bearings, such as effective energy absorption, simple construction, and low cost.This study establishes a three-dimensional isolated nuclear power plant containment structure based on the principle of similarity ratio, and compares and analyzes the acceleration, base reaction, and displacement responses of non isolated and isolated structures. 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