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- Title
Axial Capacity of Helical and Conventional Pile Raft in Cohesionless Soil: An Experimental and Numerical Study.
- Authors
Qureshi, Hamza Ahmad; Safdar, Muhammad; Ahmad, Hammad; Ahmed, Aqib; Mahmood, Khalid
- Abstract
The axial capacity of helical pile rafts (HPRs) in comparison to conventional piles, the impact of helical number on axial capacity, and the numerical modeling of helical piles with Plaxis 3D software are all investigated in this work. On single and double HPRs with four, six, and nine piles, six experimental experiments were carried out. Settlement was continuously monitored while a vertical load of 5000 N was applied incrementally. The findings demonstrated that helices greatly decreased settlement when added to traditional pile rafts. For instance, the settlement reduction for single HPRs (SHPRs) and double HPRs (DHPRs) in the four-pile raft design was 30.64% and 37.5%, respectively. Comparable decreases in settlement were noted for the nine-pile raft (SHPR = 36.81%, DHPR = 40.38%) and six-pile raft (SHPR = 35.46%, DHPR = 40.38%). On average, adding a single helix to conventional piles reduced settlement by 34.3%. Adding a double helix reduced settlement by 41%. Therefore, the axial capacity of helical piles can be increased by increasing the number of helices. The soil hardening model was used in numerical modeling because it provides more realistic results than the Mohr–Coulomb model. The experimental and numerical results from Plaxis 3D were in good agreement.
- Subjects
SOILS; COMPUTER software; DESIGN
- Publication
Arabian Journal for Science & Engineering (Springer Science & Business Media B.V. ), 2024, Vol 49, Issue 10, p13613
- ISSN
2193-567X
- Publication type
Article
- DOI
10.1007/s13369-024-08738-8