An offshore terminal in East Africa adopts a high-piled structure. The surface soil layer is thick soft clay，and the bottom layer is weathered mudstone. The pile tip cannot penetrate the moderately weathered mudstone layer，so the bearing capacity of the pile foundation is at risk. Based on the analysis of the pile driving record and according to the results of the static load test and dynamic test，we adjust the driving finishing criterion to ensure that the subsequent pile foundation can meet the requirements on the bearing capacity. Furthermore，we study the bearing capacity of the highly weathered mudstone layer by the experiment. The research result may serve as a reference for similar projects in terms of the requirements of pile driving and the analysis of the pile foundation’s bearing capacity.