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Abstract

Fiber-Reinforced Polymer (FRP) composites are considered to be a potentially promising material for use as pile foundations in harsh environments such as industrial or matine conditions. As with piles made of other materials, FRP piles may buckle under extreme loading situations during their installation by driving orjacking into soils or when they are subjected to permanent superstructure loads. Since FRP composites generally have anisotropic properties, relatively low moduli, and relatively high elastic to shear modulus ratios compared to steel, for example, the shear deformation effect plays a more important role in dictating the buckling loads of FRP piles. In this paper, the Timoshenko beam theory is adopted to derive solutions which include the shear deformation effect for buckling loads of vertically loaded transversely isotropic FRP piles with five different boundary conditions. Parametric studies show that the buckling loads for the cases where the shear defonnation effect is considered are always lower than when the shear deformation effect is ignored.

Keywords

fiber-reinforced polymer composite pile soil buckling shear deformation Timoshenko beam

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Buckling of Vertically Loaded Fiber-Reinforced Polymer Piles

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