The calculation method for the ultimate bearing capacity of uplift rock-socketed piles in the current specifications cannot be applied to cases where the rock socketed depth is less than 3 times the pile diameter.Under the geological conditions of shallow and hard rock layers,the axial tensile static load test is conducted using engineering piles that do not bear tensile loads during their service life,with rock embedment depths of 2.55 times the pile diameter and 2 times the pile diameter.In this experiment,the inner and outer casing technology is used for the rock-socketed pile to isolate the overlying soil layer and the strongly weathered ignimbrite layer,so that all the loads in the experiment are transfered to the moderately weathered ignimbrite layer,ensuring that the bearing capacity of the uplift rock-socketed pile is fully provided by the rock socketed section of the pile.The test results indicate that when the rock layer is moderately weathered hard rock,and the rock embedment depth is less than 3 times the pile diameter,the current industry standard formula can be applied to calculate the ultimate bearing capacity of rock-socketed piles.The ultimate bearing capacity of two test piles shall not be less than 90% of the calculated ultimate bearing capacity in the current industry standards.