Numerical Simulation on the Vertical Bearing Capacity of Large-Diameter Thin-Wall Tubular Pile with Rib

The load transfer mechanism of a special-shaped tubular pile with rib is studied by numerical simulation. The results show that a higher side friction can be observed for the radial surface of the rib and the circumferential surface than the side surface of the rib at the same displacement. The influence of rib length and width on vertical bearing capacity are also discussed. It can be found that the length of the rib has a more significant effect on the vertical bearing capacity than the width. The bearing characteristic of the tubular pile with rib is also compared with the ordinary circular section tubular pile to provide a guideline to the engineering application.