Effect of Fin Inclination on Different Shapes of Fin Under Axial Load

Traditional circular piles are frequently used as a foundation for offshore as well as onshore structures because of easy installation process. Though, in some critical cases, these traditional piles are not reliable for developing significant axial capacity during installation of pile. To overcome this problem, an innovative modification, i.e., spin fin pile foundation over a circular pile is developed. Spin fin piles are circular piles equipped with steel plate known as fins which is attached at the upper or bottom section of piles. In this paper a numerical solution for triangular shape and trapezoidal shape spin fin pile under axially loading is presented. To developed model along with an elastic–plastic soil model, an elastic fin and pile material, and interface elements a MIDAS GTS-NX software is used. The behavior of triangular shape and trapezoidal shape spin fin pile for different inclinations of fin and pile group for loose and medium dense sand are investigated. The load distribution within the spin fin pile and the settlement of pile are shown. Analysis shows that, the vertical resistance is more in trapezoidal shape fin pile as compare to triangular shape spin fin pile.