FEM Numerical Simulation on Effective Length of Large Diameter and Super-long Pile

Large diameter and super-longpiles has found abroad application in large bridges and high buildings,but there is a phenomenathat piles are becomingmore and more longer.Sometimesit brings on waste and it is not scientific,so it is necessary to study the effective length of large diameter and super-long piles.Andit is not realistic to have a batch test in order to obtain the effective length of piles because the test is very difficult and the test cost is great.This paper is dedicated to a numericalsimulation cal-culation on the ef fective length of large diameter and super-longpiles by FEMwhich includes cells of point-planecontact.[