Numerical Study of Helical Piles in Sandy Soils Under Vertical and Lateral Loads

Subject Areas : Analysis of Structure and Earthquake

Farhad Nabizadeh ¹ , Ali Zahmatkesh ² , Amirhosin Moslemi ³

1 - Department of Civil Engineering<Chaloos branch,Islamic Azad Univercity<Chaloos, Iran
2 - Department of Civil Engineering, Ferdows branch, Islamic Azad University, Ferdows, Iran
3 - Islamic Azad University, Chaloos, Iran

Received: 2024-12-16 Accepted : 2025-04-09 Published : 2025-05-19

Keywords: Helical pile, Helical blade, Bearing capacity, Shaft diameter ,

Abstract :

The application of screw piles as a deep foundation type has increased significantly in recent years. The increasing use of helical piles can be attributed to their unique advantages, including relatively low construction and installation costs compared to other foundations, the ability to install in different soils without the need for measures such as casing, curing and maintenance (as is required for concrete piles), and the lack of need for pre-drilling. This research investigated the bearing capacity of piles by numerical modeling of 9 piles with spiral blades. By drawing load-displacement diagrams and comparing them at a constant settlement value, the bearing capacity has been calculated. The results indicated that the bearing capacity of the structure increased with increasing the shaft diameter and the number of pile blades. According to the results, the shaft diameter has a greater impact on the bearing capacity than the number of blades. The best performance of the helical spark plug system was related to the three-blade spark plug model with a diameter of 25 mm.

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