COMPARISON OF BEARING PERFORMANCE OF TWO TYPES OF PILES BY FIELD LOAD TESTS

Through single pile vertical resistant to vertical static load experiment and single pile horizontal static load experiment on PHC pre-pressed pipe pile and bored pile with the same diameter and length, this paper analyzed pile head deformation and bearing performance of the two kinds of piles under the circumstances of vertical load and horizontal load. The results indicate that, the vertical load bearing performance differs little between the two piles. PHC pre-pressed pipe pile has a little more vertical bearing capacity than bored pile, while it has nearly the same horizontal bearing capacity with bored pile, with a little less horizontal deformation. Hence the level resistance coefficient ratio of foundation m calculated from PHC pre-pressed pipe pile is a little higher than bored pile.