Study on stress-strain performance and support mechanism of flexible surface soil nail wall

Study on stress-strain performance and support mechanism of flexible surface soil nail wall | 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 Study on stress-strain performance and support mechanism of flexible surface soil nail wall Caijin Wang, Zhiwei Fang, Honglin Ren, Yuxin Ma, Sijia Wei, Liangfu Xie, and 7 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8241101/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 To address the engineering safety challenges in flexible surface soil nail wall support systems, this study investigates the support mechanisms of such structures through a case study of foundation pit support engineering for the Tumor Diagnosis and Treatment Center at the First People's Hospital of Aksu Prefecture. Utilizing particle discrete element method, a three-dimensional numerical model was developed to simulate the entire construction process of flexible surface soil nail walls. The model conducted numerical simulations for excavation, drilling, grouting, and mesh installation stages under layered excavation modes, with particular focus on particle displacement, structural stress, local characteristics of flexible surfaces and soil nails, and support mechanisms. Results demonstrate that central soil nails experience maximum axial stress while upper and lower sections bear relatively lower loads. Horizontal displacement shows rapid changes during the initial week but stabilizes after 20 days. Cumulative settlement exhibits significant fluctuations in the first 10 days before stabilizing post-20-day period. During construction, soil displacement progressively increases in the foundation pit. Stress redistribution occurs due to excavation and flexible surface support, resulting in wavy displacement curves. Central soil nails experience greater tensile forces than their ends, forming convex stress-strain curves. Leveraging the discrete element method's core advantage of directly simulating particle motion and contact interactions, this study overcomes the limitations of traditional finite element methods in simplifying soil discrete nature. The research provides unique guidance for support design optimization, construction risk control, and performance evaluation through multi-scale correlation analysis spanning microscopic mechanisms, mesoscopic evolution, and macroscopic responses in soil nail wall support engineering. Physical sciences/Engineering Earth and environmental sciences/Solid earth sciences flexible surface layer soil nail wall support stress-displacement test numerical simulation discrete element method PFC software 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-8241101","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":565126181,"identity":"dbddc026-31d8-4972-9cef-586cdf436591","order_by":0,"name":"Caijin Wang","email":"","orcid":"","institution":"Xinjiang University","correspondingAuthor":false,"prefix":"","firstName":"Caijin","middleName":"","lastName":"Wang","suffix":""},{"id":565126182,"identity":"d785928c-01d6-4568-8c8c-359b4dcc1641","order_by":1,"name":"Zhiwei Fang","email":"","orcid":"","institution":"Xinjiang 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