The pore pressure increment and radial stress of pile-soil interface is measured by micro silicon piezoresistive sensors installed on pile. It is important to deepen mechanical characteristics understanding of jacked piles. Installation method of sleeve embedded in opening hole of the double-wall open-close model pile is applied. The comparative experimental tests of open-close jacked piles are carried out by monitoring mechanical characteristics during jacked pile-sinking， excess pore pressure dissipating and loading stage. Experimental results show that total radial stress of pile-soil interface of open-close jacked piles decreases with the increasing of h/L（h is pile end distance of sensor；L is pile length） at the same depth. The ratio of the effective radial stress between the pile sinking stage and the pile sinking at different locations of h/L for different pile end forms during excess pore water pressure dissipation is 0.6±0.1 . The variation value of total radial stress of pile-soil interface has mutations when pile end displacement reaches about 1.0 mm. The variation value of total radial stress of pile-soil interface decreases with the increasing of h/L at the same depth after loading. The research results have engineering reference value for jacked piles construction and design.