A new foundation type called pile-slab base is introduced for the 500kV transmission line tower according to the geological conditions of silt. Then the field mechanical tests of heap loading and uplifting are done for this new foundation after the pile integrity testing. At the same time

the pressure of the slab

the stress of steel bar meters and the displacement deformation of four corners of the slab and pile are monitored. The results show that the compressive and uplifting resistance performance is excellent and the foundation can function as a whole to resist deformation; the engineering demand also can be satisfied. Moreover

the field test is simulated by the ABAQUS software; the conclusions are verified further on the basis of consistence between numerical calculation results and test data; therefore

the numerical model can be applied to other mechanical simulation reliably.