Visco-elastically connected shear-flexural structure: Elastoplastic seismic response property and a simplified analysis procedure

Visco-elastically connected shear-flexural structure: Elastoplastic seismic response property and a simplified analysis procedure | 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 Visco-elastically connected shear-flexural structure: Elastoplastic seismic response property and a simplified analysis procedure Shi-Li Guo, Yang Xiang, Guo-Qiang Li This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7999999/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 21 Apr, 2026 Read the published version in Bulletin of Earthquake Engineering → Version 1 posted 5 You are reading this latest preprint version Abstract In a conventional shear-flexural structure, e.g., frame-shear wall building structure, etc., the base shear is mainly resisted by the flexural-type subsystem (shear wall, braced frame, etc.). Post-earthquake observations had proved that the excessive seismic force demand of shear wall or brace could generate irreparable damages. To deal with this issue, a visco-elastically connected shear-flexural (VeSF) structure was developed. The VeSF structure incorporates viscoelastic connectors (VECs) to decouple the flexural-type subsystem and the shear-type subsystem (moment-resisting frame, etc.), which not only mitigates the force demand of the former but also reduces the acceleration response of the latter. The study reported here focuses on the seismic performance of the VeSF structure in the inelastic stage. The most notable features of an inelastic VeSF structure revealed in this study include: 1) the flexural-type subsystem is no longer the primary lateral strength provider, the shear-type subsystem can sustain larger base shear and yield firstly. This could render an enhanced global deformability of the structure, a reduced force demand, and a smaller acceleration response; 2) a more flexible VEC, a larger attributed mass on the shear-type subsystem, and a stiffer flexible-type subsystem would lead to a better seismic performance of the system. As a by-product, a simplified nonlinear equivalent static analysis method is provided to efficiently estimate the inelastic seismic demand of the VeSF structure. The proposal is tailored for non-classically damped structures, for example, those with viscoelastic damper and responding in the elastoplastic range, i.e., the VeSF structure discussed in this paper. By formulating a displacement-conforming, modal-consistent load pattern that explicitly incorporates the non-classic nature of the structural damping, the proposal is proved accurate while being conceptually straightforward and easy-to-implement. shear-flexural structure viscoelastic connector inelastic seismic performance non-classically damped system pushover for non-classic damping Full Text Cite Share Download PDF Status: Published Journal Publication published 21 Apr, 2026 Read the published version in Bulletin of Earthquake Engineering → Version 1 posted Reviewers agreed at journal 10 Nov, 2025 Reviewers invited by journal 10 Nov, 2025 Editor invited by journal 10 Nov, 2025 Editor assigned by journal 03 Nov, 2025 First submitted to journal 01 Nov, 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. 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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-7999999","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":543047710,"identity":"0310f19c-31b6-4ff9-a7d8-5aad783b1220","order_by":0,"name":"Shi-Li Guo","email":"","orcid":"","institution":"Tongji University","correspondingAuthor":false,"prefix":"","firstName":"Shi-Li","middleName":"","lastName":"Guo","suffix":""},{"id":543047711,"identity":"62a4d9ac-6fb0-4dc5-9486-d76530095f79","order_by":1,"name":"Yang 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