Geotechnical Settlement Deformation Analysis of Soft Sub-grade Embankment Filling Construction Period Based on Unified Hardening Model

In order to solve the problem that the traditional settlement and deformation analysis method of rock and soil in the process of filling soft foundation embankment has poor application effect and is quite different from the actual measurement value, a settlement and deformation analysis method of soil–rock mixture based on unified hardening model is proposed, which is applied to the settlement and deformation analysis of soil–rock mixture. This method first establishes the general equation of geotechnical seepage, calculates the parameters of geotechnical stratum of soft subgrade embankment, then takes OCR as the control parameter, compiles the finite element program of UH model, finally establishes the geotechnical stratum of soft subgrade embankment with DIF, and uses finite element method to analyze different optical character recognition. The simulation results show that the analytical value of settlement and deformation of rock and soil layers given by the proposed method is basically consistent with the measured value, the pore water pressure disappears completely, and the residual hydrostatic pressure drops to 0, which indicates that the method has high reliability and accuracy.