Static and Dynamic Load Tests of Driven Precast Piles

Two test piles have been installed for the foundations of the future expansion of an infrastructure in Spain. The piles were precast reinforced concrete, installed by driving with a hydraulic hammer. A load test campaign has been carried out by various methods and on various dates, which has served to validate the design of the projected foundation system. The article analyzes the results of the load tests carried out on the two piles. On the one hand, the ultimate resistance obtained with the two test methods, static and dynamic, is compared, observing that they reach quite similar values. On the other hand, the evolution of the ultimate resistance is analyzed over the months after the drive, with no significant increases being observed. Changes are observed in the resistance distribution between base and shaft of the pile