Abstract：In order to systematically study the bearing capacity of a squeezed branch pile, a static load test of a squeezed branch pile was carried out on the site based on an expansion project of an east thermal power plant in Jiaozuo City. The vibrating string extensometer was embed before the test for studying the pile axial force variation. The experiment results show that the disk of a branch pile effectively can raise the pile shaft axis force, and greatly reduce the pile end shaft force; pile side friction reached about 30. 99% of the total load at the pile top in its limit state, the up-disk shared about 14. 13% and the tip resistance shared about 54. 88% at the same time; the position of a branch pile is very important for improving its bearing capacity, and the function of bearing disk has time and sequence effects; the“Q-s”curve of a branch pile is slow transformation; the settlement at the pile top is about 8 mm when the side resistance of a pile is fully utilized. The research results can provide reference value for the design and research on a squeezed branch pile.

Keyword：special piles;squeezed branch pile;static loading test;vertical bearing capacity;settlement characteristic;