Anslysis on excess pore water pressure in pile group based on model test

This paper is based on jacked pile group model test.Devices for measuring excess pore water pressure were used when the single pile and pile group penetrated into the soil.According to the test,a conclusion is obtained that the excess pore water pressure decreased as the radial direction distance increased when the single pile was penetrated into the soil,the excess pore water pressure increased as the depth increased around the pile area when the pile group were penetrated into the soil.The excess pore water pressure increased suddenly when the driving pile was close to the measure point because the driving order effect.