Foundation preloading treatment effect evaluation method and system

The invention relates to a foundation preloading treatment effect evaluation method and system. The method comprises the steps that S1, ground surface settlement, layered settlement and pore water pressure data of a foundation in the preloading treatment process are monitored; s2, calculating a settlement consolidation degree numerical value and a pore pressure consolidation degree numerical value of the foundation based on the data in the S1; meanwhile, performing a drilling sampling test, a vane shear test and a load test on the foundation subjected to preloading treatment to obtain various test values; s3, constructing a foundation preloading network data model according to the numerical values obtained in the S2, and obtaining a position with the most deviated design requirement values in the network data model and a contour plane graph; s4, constructing an evaluation model, and outputting a calculation result; s5, the calculation result is compared with the actual water content, void ratio and foundation