Abstract
Composite piles have been used generally for waterfront barriers, fender piles and bearing piles for light structures. Fibre-reinforced polymer (FRP) composite as a pile material can eliminate deterioration problems of conventional piling materials when exposed to harsh or marine aggressive environments. FRP composite piles are composed of a hollow FRP pipe that is filled before installation with an expanding concrete and is coated with a durable corrosion-resistant coating layer. However, researchers studies related to the use of FRP materials as pile are very limited. This paper presents the results of study related with the performance of fibre-reinforced polymer pile foundation resting in marine layered soil of Chennai port trust (India), with respect to its various parameters. For this purpose, analytical model of FRP pile was developed in MIDAS GTS NX software to simulate the pile foundation with different parameters studied. A defined soil model represents marine layered bed and pile embedded within it with varying slenderness ratio and subjected to vertical, uplift and lateral loading. Performance of pile group, with different number of piles in the group, was also analysed. FRP pile materials investigated were glass fibre-reinforced polymer (GFRP) and carbon fibre-reinforced polymer (CFRP), and the results were compared to the conventional concrete pile. The results show that the ultimate load capacity of FRP pile is higher than that of conventional concrete pile. Also, increasing the slenderness ratio increases the ultimate load capacity of pile.
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