Field tests on bearing capacities of CFG pile and root pile

For the soft soil foundation slipped in the storage yard of a wharf, the composite foundations with CFG pile and root pile net are used for reinforcement in different zones. The field static load tests are carried out to study the bearing behavior of the CFG pile and root pile. The test results of their vertical ultimate bearing capacities of single pile are compared. The bearing deformation difference between the CFG pile and the root pile is analyzed. The results show that there are obvious inflection points in the Q-s curves of the static load tests on the CFG pile and root pile. The values of the vertical ultimate bearing capacity of the root pile are larger than those of the CFG pile. The stiffness of single pile of the root pile is significantly larger than that of the CFG pile under the ultimate bearing capacity, and its maximum settlement at pile top is obviously smaller than that of the CFG pile under the maximum loads.