Today

belled pile is used more and more widely in industry architecture

.This paper has a research on vertical bearing properties of belled pile based on vertical load test.The result shows that when belled diameter(D) and shaft diameter(d) are the same

ultimate friction(kN) enhances with L increasing;the bearing capacity of belled pile(kN) increases and end resistance(kPa) decreases along with the belled diameter's increasing when other conditions are same.Compared with shaft pile

the bearing behavior of belled pile is better than shaft pile

and the settlement is less than shaft pile when the shaft diameter(d) and the length of belled pile in soil are same with the shaft pile.