Abstract: The pile-net composite foundation,combining the advantages of vertical reinforcement and the horizontal reinforcement simultaneously,in which the pile-net-soil coordinates together affects and shares the embankment load effectively,is a reinforcement method that has complex mechaism.Through in-situ test of the red clay foundation of the railway line for passenger traffic line reinforced by pile-net composite foundation,some tests including the earth pressure of the base of the foundation,the def...