Model Tests to Determine Lateral Load Capacity of Helical Piles Embedded in Sand
Helical piles are used in civil engineering practice to provide stability against tension, compression, and lateral loads. Present research paper highlights the parametric study of helical piles under lateral loads, through an experimental investigation on model piles embedded in dry sand. Series of lateral load tests were performed with helical piles of diameter 19 mm with number of helices 1 and 2 of embedment ratios 12, 16, and 20, respectively, and the results were compared with plain piles. This research aimed to study the response of helical piles under horizontal loading. Test results revealed that the lateral capacity of helical piles is greater than that of plain shaft piles, and the increase in number of helical plates also increases the capacity of helical piles. The embedment ratio, number of helixes, diameter of helixes, their position on the pile shaft, and soil properties determine the lateral capacity of helical piles. The experimental results are also compared with theoretical model suggested previously for helical pile.
KeywordsHelical pile Lateral loads Anchors
The authors are highly thankful to Dr. Satyendra Mittal, B. Ganjoo, and Sunny Shekhar for providing theoretical approach to laterally loaded screw anchor piles.
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