Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental Investigation of Pullout Capacity of Screw Piles in Soft Clayey Soil
Screw piles are considered one of the distinctive and unique engineering solutions because of the characteristics and advantages that it possesses such as its appropriate cost, the speed and ease of implementation and the suitability of its use with places with restricted access, with the flexibility of design and manufacture according to the conditions of the ground and the amount of forces required to resist. In this study, a series of experiments conducted on a single screw pile with a variable aspect ratio (L/D = 10, 13.33, and 20) under the influence of static pullout loads. The screw piles were inserted in soft soil of unit weight (18.72 kN/m3) and moisture content (30.19%) and with a liquid limit = 55%, and plasticity index = 32. A physical model with a laboratory scale was designed for this purpose and instrumented with the necessary equipment. The load-settlement curves and from these curves were used to calculate the ultimate pullout capacity of screw piles by adopting the failure criterion of settlement equals to 20% of helix diameter. The results of experimental tests showed a significant increase in the pullout capacity of screw piles in comparison with an ordinary pile (426.6, 766.67, 1186.67) %. Also, the results showed increasing the pullout capacity of piles with increasing the aspect ratio and well agreed with those obtained theoretically.
Experimental Investigation of Pullout Capacity of Screw Piles in Soft Clayey Soil
Screw piles are considered one of the distinctive and unique engineering solutions because of the characteristics and advantages that it possesses such as its appropriate cost, the speed and ease of implementation and the suitability of its use with places with restricted access, with the flexibility of design and manufacture according to the conditions of the ground and the amount of forces required to resist. In this study, a series of experiments conducted on a single screw pile with a variable aspect ratio (L/D = 10, 13.33, and 20) under the influence of static pullout loads. The screw piles were inserted in soft soil of unit weight (18.72 kN/m3) and moisture content (30.19%) and with a liquid limit = 55%, and plasticity index = 32. A physical model with a laboratory scale was designed for this purpose and instrumented with the necessary equipment. The load-settlement curves and from these curves were used to calculate the ultimate pullout capacity of screw piles by adopting the failure criterion of settlement equals to 20% of helix diameter. The results of experimental tests showed a significant increase in the pullout capacity of screw piles in comparison with an ordinary pile (426.6, 766.67, 1186.67) %. Also, the results showed increasing the pullout capacity of piles with increasing the aspect ratio and well agreed with those obtained theoretically.
Experimental Investigation of Pullout Capacity of Screw Piles in Soft Clayey Soil
Karkush, Mahdi O. (Herausgeber:in) / Choudhury, Deepankar (Herausgeber:in) / Hussein, Asaad A. (Autor:in) / Karkush, Mahdi O. (Autor:in)
Geotechnical Engineering and Sustainable Construction ; Kapitel: 25 ; 315-327
20.03.2022
13 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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