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Numerical Study on the Effect of Rock-Socketing on Laterally Loaded Piles in the Proximity of Sloping Ground
Pile foundations are constructed to support structures such as offshore wind turbines, berthing structures, and transmission towers, which are subjected to large lateral loads. Such structures are susceptible to be constructed in the vicinity of sloping ground. Prior research has presented that the effect of slope induces a decrease in the lateral load capacity of the piles embedded in the neighbourhood of sloping ground. This paper explores rock-socketing as a viable solution for the betterment of lateral load capacity of piles situated in the vicinity of such sloping terrains. Parametric numerical analyses have been conducted by varying the position of the pile with respect to the crest of the slope and the depth of rock-socketing of the pile on finite-element software PLAXIS 3D. Full-scale field test data presented in respected publications have been adopted for the modelling of the prototype pile, the multi-layered soil strata, and validation of the model. A critical slope of 1 V:1.5H of the soil strata has been considered for the study. The positions of the pile were considered at increments of 3 pile diameters on either side of the slope’s crest, five positions on the embankment (+3D, + 6D, + 9D, + 12D, and + 15D) and three positions on the slope (-3D, -6D, and -9D). The position of the pile embedded on the crest (0D) was also considered. The depth of rock-socketing was considered in increments of one pile diameter from the bottom of the pile (1D, 2D, and 3D). The generated load–deflection responses have been compared to un-socketed piles (US) tested in identical conditions and piles tested on uninfluenced horizontal ground. Based on the results, it was observed that the rock-socketing of piles significantly improved the lateral load capacity of the piles, and the zone of influence due to the effect of slope decreased with the increase in depth of rock-socketing.
Numerical Study on the Effect of Rock-Socketing on Laterally Loaded Piles in the Proximity of Sloping Ground
Pile foundations are constructed to support structures such as offshore wind turbines, berthing structures, and transmission towers, which are subjected to large lateral loads. Such structures are susceptible to be constructed in the vicinity of sloping ground. Prior research has presented that the effect of slope induces a decrease in the lateral load capacity of the piles embedded in the neighbourhood of sloping ground. This paper explores rock-socketing as a viable solution for the betterment of lateral load capacity of piles situated in the vicinity of such sloping terrains. Parametric numerical analyses have been conducted by varying the position of the pile with respect to the crest of the slope and the depth of rock-socketing of the pile on finite-element software PLAXIS 3D. Full-scale field test data presented in respected publications have been adopted for the modelling of the prototype pile, the multi-layered soil strata, and validation of the model. A critical slope of 1 V:1.5H of the soil strata has been considered for the study. The positions of the pile were considered at increments of 3 pile diameters on either side of the slope’s crest, five positions on the embankment (+3D, + 6D, + 9D, + 12D, and + 15D) and three positions on the slope (-3D, -6D, and -9D). The position of the pile embedded on the crest (0D) was also considered. The depth of rock-socketing was considered in increments of one pile diameter from the bottom of the pile (1D, 2D, and 3D). The generated load–deflection responses have been compared to un-socketed piles (US) tested in identical conditions and piles tested on uninfluenced horizontal ground. Based on the results, it was observed that the rock-socketing of piles significantly improved the lateral load capacity of the piles, and the zone of influence due to the effect of slope decreased with the increase in depth of rock-socketing.
Numerical Study on the Effect of Rock-Socketing on Laterally Loaded Piles in the Proximity of Sloping Ground
Lecture Notes in Civil Engineering
Satyanarayana Reddy, C. N. V. (editor) / Krishna, A. Murali (editor) / Satyam, Neelima (editor) / Raja, Nandhagopal (author) / Muthukkumaran, K. (author)
2022-01-17
11 pages
Article/Chapter (Book)
Electronic Resource
English
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