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<p>Dynamic penetration resistance under varying driving energy has traditionally been assessed through theoretical or empirical methods based on simplified assumptions, which restrict the accuracy of cone–soil interaction analysis. In this study, a methodological framework was developed to estimate the maximum dynamic resistance by reconstructing force and velocity signals at the cone–soil interface, from which dynamic load–displacement curves were defined. Controlled tests were performed in a calibration chamber using Hostun HN31 and Fontainebleau NE34 sands, reconstituted at density indices from 0.30 to 0.90 and subjected to vertical effective stresses between 10 and 400&#xa0;kPa. Additional field tests involving both dynamic and static penetration methods were also carried out. Results indicated that the maximum dynamic resistance is an inherent soil property, independent of variations in driving energy or penetration velocity within the operational range, where extra energy was dissipated solely through plastic deformations. This parameter showed a consistent correlation with static resistance, allowing for the development of practical equivalences and broadening the methodology’s applicability. Its independence from applied energy ensures stability and reproducibility, supporting its use in shallow foundation design, compaction control, and stability assessment of tailings deposits and embankments.</p>

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Variable Energy Dynamic Penetration Resistance of Soils Based on a Dynamic Load–Displacement Relationship

  • 期刊论文

  • 发表日期：

    2025年10月18日

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  • Sebastián López Retamales,
  • Jean-Claude Dupla,
  • Jean Canou,
  • Miguel Benz Navarrete

摘要

Dynamic penetration resistance under varying driving energy has traditionally been assessed through theoretical or empirical methods based on simplified assumptions, which restrict the accuracy of cone–soil interaction analysis. In this study, a methodological framework was developed to estimate the maximum dynamic resistance by reconstructing force and velocity signals at the cone–soil interface, from which dynamic load–displacement curves were defined. Controlled tests were performed in a calibration chamber using Hostun HN31 and Fontainebleau NE34 sands, reconstituted at density indices from 0.30 to 0.90 and subjected to vertical effective stresses between 10 and 400 kPa. Additional field tests involving both dynamic and static penetration methods were also carried out. Results indicated that the maximum dynamic resistance is an inherent soil property, independent of variations in driving energy or penetration velocity within the operational range, where extra energy was dissipated solely through plastic deformations. This parameter showed a consistent correlation with static resistance, allowing for the development of practical equivalences and broadening the methodology’s applicability. Its independence from applied energy ensures stability and reproducibility, supporting its use in shallow foundation design, compaction control, and stability assessment of tailings deposits and embankments.