Briefly describe the difference between the traditional method and the one recommended by the code.

The traditional single-line compression layered summation method is calculated according to the additional stress, and the unidirectional compression layered summation method recommended by the code is calculated according to the additional stress diagram area; The calculation depth of foundation settlement is determined by the deformation ratio method recommended by the code, while the stress ratio method in the traditional unidirectional compression layered summation method determines the calculation depth of foundation settlement. Compared with the traditional method, the important feature of the standard method is to introduce the empirical coefficient of settlement calculation to correct the deviation of calculation from the measured value. If the depth of settlement calculation is the same and there is no empirical correction, there is no difference in simplification and calculation results between the two methods.