Novel composite foundation treatment structure

The utility model belongs to the technical field of foundation treatment engineering, and discloses a novel composite foundation treatment structure which comprises sand piles or gravel piles and further comprises plastic drainage plates, the sand piles or gravel piles and the plastic drainage plates are arranged in a staggered mode at equal intervals, and one plastic drainage plate is arranged among every four sand piles or gravel piles in a driving mode. The sand piles or the gravel piles and the plastic drainage plates penetrate through the soft soil layer, and the plastic drainage plates penetrate through the soft soil layer to enter the underlying clay layer. Compared with a foundation treated by independently driving a plastic drainage plate, the foundation treatment structure provided by the utility model is more stable, shorter in consolidation time, capable of meeting the requirements of treating various soft foundations and using facilities at the upper part, less in use of sandstone materials, free