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Yoshikawa N.,JAPAN PILE Corporation | Suzuki Y.,Kajima Technical Research Institute | Kobayashi K.,Japan Nuclear Energy Safety Organization | Kanai S.,Chiyoda Corporation | Abe Y.,Japanese Technical Association for Steel Pipe Piles and Sheet Piles
AIJ Journal of Technology and Design | Year: 2011

Based on past field test data on the horizontally loaded single piles, the authors have proposed a p-y model, which relates unit subgrade reaction force and pile displacement, for single piles. Particular attention was paid to evaluate the coefficient of horizontal subgrade reaction taking the pile diameter and the soil properties into account. The hyperbolic model presented in this paper shows good applicability to simulate the non-linear response of single piles subjected to horizontal loads regardless of the types of piles and soils, which can be useful for the advanced seismic design of piles. Source


Hirose T.,Japanese Technical Association for Steel Pipe Piles and Sheet Piles | Sakamoto T.,Japanese Technical Association for Steel Pipe Piles and Sheet Piles | Ichikawa K.,Japanese Technical Association for Steel Pipe Piles and Sheet Piles | Abe Y.,Japanese Technical Association for Steel Pipe Piles and Sheet Piles | And 4 more authors.
AIJ Journal of Technology and Design | Year: 2013

Pile foundation arranged short piles tend to reduce the shearing force and bending moment of bearing piles by short piles. The authors carried out Static FEM about the steel pipe pile foundation embedded in elastic ground. It turned out that lateral effect of pile group about pile foundation arranged short piles can be denoted by a past estimation method by taking the influence of short piles into consideration. Moreover, comparison of dynamic centrifuge tests and static analysis which imitated these tests showed that estimation method taking the influence of short piles was appropriate in general. Source

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