Pile’s bearing performance of building can be changed with time

because of the rheology of roch and soil. The time- dependent deformation of piles may affect the serviceability of piled structures after completion. This paper presents the results of a pile loading test under working load for a period up to 100 days. Two 800 mm-diameter bored piles with different pile lengths for bridge foundations were tested. The axial load distribution along the piles during loading was measured with stressometers attached to the reinforcements. The side friction resistance was obtained during each loading. The creep behavior and the settlement of the piles under serviceability limit states were revealed. The test results were analyzed using the new spatiotemporal effect theory of pile’s bearing performance. Analytical results were obtained with calibrated parameters. The results can be used for the design of pile foundation and to predict the long-term settlement of piles，and to solve the problem of controlling the differential settlements after bridge being completed.