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June 8, 2026Scientific ReportsOpen Access

Field performance of inclined H-beam strength composite piles as internal bracing in a deep soft soil excavation

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Authors

LSLijun SunYGYekuan GengJ(Jun Liu (42548)

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Overview

Randomized trial investigates the performance of inclined H-beam composite piles in soft soil excavations, suggesting improved structural stability.

Key Points

  • This study aims to assess the efficacy of inclined H-beam strength composite piles in stabilizing deep soft soil excavations.
  • Conducted a full-scale field investigation in a 6.15–7.10 m deep excavation in Nanjing.
  • Performed field load tests on three inclined SCPs to measure ultimate capacities and settlements.
  • Utilized regression analysis with a power-function model to extrapolate ultimate capacities.
  • Field tests indicated ultimate vertical capacities of 1,350–2,090 kN with settlements of 14.07–15.17 mm.
  • Extrapolated capacities ranged from 2,299 to 3,682 kN, showing current specifications provide conservative estimates (62%-84%).
  • Maximum lateral wall deflection was 6.36 mm, significantly inferior to conventional systems.

Cite This Study

Sun et al. (2026) studied this question.

synapsesocial.com/papers/6a265becad53cfb9357c54fchttps://doi.org/10.1038/s41598-026-52042-4
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