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FIELD AXIAL LOADING TESTING OF HELICAL PILES AT A COHESIONLESS SOIL SITE
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- Author(s) / Creator(s)
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Helical piles are deep foundation systems widely used in the North America. In order to understand the axial behavior in compression and tension, field pile load testing has been conducted on four different pile types in cohesionless soil at the botanical garden of University of Alberta near Devon. Total of 16 tests are performed, half of which are tensile tests while the rest are compressive tests.The size of the helical piles varies from 2.875 inch to 4.5 inch in diameter out of which three are single helical piles and one is double helix pile. Site investigation using standard penetration test is conducted to 8.3 m deep before testing the piles. Load-displacement curves show the axial behavior of helical piles under static axial loading. A relationship is established between the installation torque and ultimate axial capacity through the torque factor. Also, compression piles are compared with the tension piles in terms of axial capacity and settlement. Finally, a correlation is made between installation torque and allowable loads.
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- Date created
- 2020-12-01
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- Subjects / Keywords
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- Type of Item
- Report