{"title":"浅层地基的承载力:重点关注深度系数与相应的 N 系数的结合","authors":"Lysandros Pantelidis","doi":"10.1007/s12517-024-11976-7","DOIUrl":null,"url":null,"abstract":"<p>The ongoing refinement of bearing capacity equations remains pivotal in soil mechanics and foundation engineering, reflecting its critical role in ensuring design efficacy and construction safety. This study conducts a thorough evaluation of classical bearing capacity methods—Terzaghi, Meyerhof, Vesic, and Hansen—and methods included in various design standards, such as EN1997:2004, prEN1997:2023, GEO, AASHTO, FHWA, and API. It explores the performance and applicability of these approaches, identifying areas for potential improvement. In response to identified challenges, the paper proposes the integration of a unified depth factor. This new factor is designed to be applicable across all <i>N-</i>terms, providing a more versatile and accurate tool for bearing capacity predictions. Unlike the original depth factors unique to each method, which may not fully address complex soil and footing conditions, the unified depth factor is developed to enhance prediction accuracy for a wide range of conditions, including both flexible and rigid footings under varying flow rules (<i>ψ</i> = <i>0</i> and <i>ψ</i> = <i>φ</i>). This depth factor corrects for modeling errors, emphasizing the importance of pairing the correct set of <i>N-</i>factors with their corresponding depth factor. By offering a singular depth factor that aligns with the outcomes of finite element analysis, this paper not only simplifies the computational process but also enhances the accuracy of bearing capacity predictions across a diverse range of soil conditions and footing types. The comparative analysis, based on finite element analysis, validates the proposed method’s effectiveness, showcasing its potential to significantly refine foundation design practices by comparing it with both traditional and newly developed depth factors.</p>","PeriodicalId":476,"journal":{"name":"Arabian Journal of Geosciences","volume":null,"pages":null},"PeriodicalIF":1.8270,"publicationDate":"2024-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Bearing capacity of shallow foundations: a focus on the depth factors in combination with the respective N-factors\",\"authors\":\"Lysandros Pantelidis\",\"doi\":\"10.1007/s12517-024-11976-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The ongoing refinement of bearing capacity equations remains pivotal in soil mechanics and foundation engineering, reflecting its critical role in ensuring design efficacy and construction safety. 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引用次数: 0
摘要
承载力方程的不断完善仍然是土壤力学和地基工程的关键,反映了其在确保设计效率和施工安全方面的重要作用。本研究对经典承载力方法(Terzaghi、Meyerhof、Vesic 和 Hansen)以及各种设计标准(如 EN1997:2004、prEN1997:2023、GEO、AASHTO、FHWA 和 API)中的方法进行了全面评估。本文探讨了这些方法的性能和适用性,并确定了可能改进的领域。为应对已确定的挑战,本文建议整合一个统一的深度系数。这一新系数旨在适用于所有 N 术语,为承载能力预测提供一个更通用、更准确的工具。原有的深度系数为每种方法所独有,可能无法完全应对复杂的土壤和基脚条件,而统一深度系数的开发则是为了提高各种条件下的预测精度,包括不同流动规则(ψ = 0 和 ψ = φ)下的柔性和刚性基脚。该深度系数可纠正建模误差,强调了将正确的 N 系数集与相应深度系数配对的重要性。通过提供与有限元分析结果一致的单一深度系数,本文不仅简化了计算过程,还提高了不同土壤条件和基脚类型下承载力预测的准确性。基于有限元分析的对比分析验证了所提方法的有效性,通过与传统深度系数和新开发深度系数的对比,展示了该方法在显著改进地基设计实践方面的潜力。
Bearing capacity of shallow foundations: a focus on the depth factors in combination with the respective N-factors
The ongoing refinement of bearing capacity equations remains pivotal in soil mechanics and foundation engineering, reflecting its critical role in ensuring design efficacy and construction safety. This study conducts a thorough evaluation of classical bearing capacity methods—Terzaghi, Meyerhof, Vesic, and Hansen—and methods included in various design standards, such as EN1997:2004, prEN1997:2023, GEO, AASHTO, FHWA, and API. It explores the performance and applicability of these approaches, identifying areas for potential improvement. In response to identified challenges, the paper proposes the integration of a unified depth factor. This new factor is designed to be applicable across all N-terms, providing a more versatile and accurate tool for bearing capacity predictions. Unlike the original depth factors unique to each method, which may not fully address complex soil and footing conditions, the unified depth factor is developed to enhance prediction accuracy for a wide range of conditions, including both flexible and rigid footings under varying flow rules (ψ = 0 and ψ = φ). This depth factor corrects for modeling errors, emphasizing the importance of pairing the correct set of N-factors with their corresponding depth factor. By offering a singular depth factor that aligns with the outcomes of finite element analysis, this paper not only simplifies the computational process but also enhances the accuracy of bearing capacity predictions across a diverse range of soil conditions and footing types. The comparative analysis, based on finite element analysis, validates the proposed method’s effectiveness, showcasing its potential to significantly refine foundation design practices by comparing it with both traditional and newly developed depth factors.
期刊介绍:
The Arabian Journal of Geosciences is the official journal of the Saudi Society for Geosciences and publishes peer-reviewed original and review articles on the entire range of Earth Science themes, focused on, but not limited to, those that have regional significance to the Middle East and the Euro-Mediterranean Zone.
Key topics therefore include; geology, hydrogeology, earth system science, petroleum sciences, geophysics, seismology and crustal structures, tectonics, sedimentology, palaeontology, metamorphic and igneous petrology, natural hazards, environmental sciences and sustainable development, geoarchaeology, geomorphology, paleo-environment studies, oceanography, atmospheric sciences, GIS and remote sensing, geodesy, mineralogy, volcanology, geochemistry and metallogenesis.