Study on the Lateral Bearing Capacity of Single-Helix Pile for Offshore Wind Power

Abstract

To support a lighthouse, a trestle and other structures, screw pile has been used as the foundation for more than a hundred years. Because of its efficient installation, high bearing capacity and other advantages, increasing attention has been paid to use it as the offshore wind power foundation. In this research, laboratory test was conducted to study the influence of screw pitch and the diameter of helix on the lateral bearing capacity of single-helix pile, considering the effect of the installation. The results of the single-helix pile were compared with that of steel pipe pile and other methods. According to the test, helix diameter has negligible effect on the lateral bearing capacity of helical pile, but the pitch of helical influence that significantly because of more disturbance of soil.