Investigation of Screw Pile Behavior in Cohesive Soil Under Uplift and Compressive Forces by Experimental Studies and Numerical Analyses


SARICI T., ÖZCAN M.

Arabian Journal for Science and Engineering, cilt.50, sa.16, ss.12859-12880, 2025 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 50 Sayı: 16
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1007/s13369-024-09553-x
  • Dergi Adı: Arabian Journal for Science and Engineering
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Communication Abstracts, Metadex, Pollution Abstracts, zbMATH, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.12859-12880
  • Anahtar Kelimeler: Cohesive soil, Compressive force, Ground improvement, Screw piles, Uplift force
  • İnönü Üniversitesi Adresli: Evet

Özet

Within the scope of this study, experimental studies and numerical analyses were carried out to investigate the effect of the use of screw piles and traditional piles without screws on the bearing capacity of cohesive soils under the effect of uplift and compressive forces. In the experimental studies, the effect of changing the number of helixes and the effect of different overburden loads caused by this change were investigated. In numerical analyses, the finite element method was used via Plaxis 3D and a new design different from the commonly used modeling was created using the segmented helix model. After validating the results of numerical analysis and experimental study, the effect of different embedment depths and helix diameters on the behavior of cohesive soil reinforced with screw piles under loads was investigated. According to the results obtained from the study, the bearing capacity of cohesive soil increased as the screw pile helix number increased. Increase in bearing capacity was also observed with increasing embedment depth and helix diameter. In addition, the segmented helix model used in the numerical analyses represented the screw pile behavior more realistically.