Mechanical Characteristics and Calculation Method of Static Pressure Pile Installation for PHC Pipe Piles in Sandy Soil Foundation with Pebble Interlayer

Mechanical Characteristics and Calculation Method of Static Pressure Pile Installation for PHC Pipe Piles in Sandy Soil Foundation with Pebble Interlayer | 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 Mechanical Characteristics and Calculation Method of Static Pressure Pile Installation for PHC Pipe Piles in Sandy Soil Foundation with Pebble Interlayer Xiannian Zhou, Chengyun Yang, Xiaojie Ming, Mi Dai, Weihe Lu, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-5470006/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 21 Apr, 2025 Read the published version in Scientific Reports → Version 1 posted 6 You are reading this latest preprint version Abstract The static pressure pile installation technique is extensively utilized in the construction of bridge pile foundations. However, the presence of pebble interlayers within the strata is a common occurrence. To examine the impact of such pebble interlayers on the installation of pipe piles using static pressure, model tests were executed to scrutinize parameters including pile penetration force, ultimate bearing capacity, lateral soil pressure, and the distribution of pile penetration resistance under two distinct working conditions: standard sand and pebble interlayer during pile penetration. The objective was to elucidate the effect of pebble interlayers on pile penetration. The findings indicated that a pebble layer with a thickness equivalent to 2.5 times the diameter of the pile could result in a 1.3-fold increase in the average pile penetration force, and at its peak, could elevate the pile penetration force by as much as 1.8-fold. Furthermore, the lateral soil pressure surrounding the pile exhibits a nonlinear escalation. In scenarios where the foundation soil is uniform, the lateral soil pressure at a specific point around the pile will markedly increase due to the soil compression effect generated as the pile head approaches that location. Nonetheless, after the pile head surpasses this point, the lateral soil pressure will experience a rapid decline due to the unloading effect precipitated by the failure of the soil surrounding the pile. When the pile head traverses through the pebble interlayer, it induces an augmentation in the lateral soil pressure within the underlying soil stratum. Additionally, drawing upon Meyerhof's theory of ultimate bearing capacity, a revised calculation formula for pile penetration resistance in both uniform and pebble-interbedded sandy soil foundations has been formulated. This formula can be employed to estimate the pile penetration resistance of static pressure piles. Physical sciences/Engineering Physical sciences/Engineering/Civil engineering Static pressure pile Pipe pile Lateral soil pressure Pebble interlayer Ultimate bearing capacity Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 21 Apr, 2025 Read the published version in Scientific Reports → Version 1 posted Editorial decision: Accepted 09 Apr, 2025 Reviews received at journal 06 Apr, 2025 Reviewers agreed at journal 06 Apr, 2025 Reviewers invited by journal 05 Apr, 2025 Submission checks completed at journal 05 Apr, 2025 First submitted to journal 02 Apr, 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. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. 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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-5470006","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":440196131,"identity":"5d6a0db3-bd07-4f6b-8bf6-cb31cb568123","order_by":0,"name":"Xiannian 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However, the presence of pebble interlayers within the strata is a common occurrence. To examine the impact of such pebble interlayers on the installation of pipe piles using static pressure, model tests were executed to scrutinize parameters including pile penetration force, ultimate bearing capacity, lateral soil pressure, and the distribution of pile penetration resistance under two distinct working conditions: standard sand and pebble interlayer during pile penetration. The objective was to elucidate the effect of pebble interlayers on pile penetration. The findings indicated that a pebble layer with a thickness equivalent to 2.5 times the diameter of the pile could result in a 1.3-fold increase in the average pile penetration force, and at its peak, could elevate the pile penetration force by as much as 1.8-fold. Furthermore, the lateral soil pressure surrounding the pile exhibits a nonlinear escalation. In scenarios where the foundation soil is uniform, the lateral soil pressure at a specific point around the pile will markedly increase due to the soil compression effect generated as the pile head approaches that location. Nonetheless, after the pile head surpasses this point, the lateral soil pressure will experience a rapid decline due to the unloading effect precipitated by the failure of the soil surrounding the pile. When the pile head traverses through the pebble interlayer, it induces an augmentation in the lateral soil pressure within the underlying soil stratum. Additionally, drawing upon Meyerhof's theory of ultimate bearing capacity, a revised calculation formula for pile penetration resistance in both uniform and pebble-interbedded sandy soil foundations has been formulated. 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