To assess the feasibility of the design and construction scheme for a road subgrade structure crossing beneath a high-speed railway bridge,this study took a real case where a highway intersects the railway line.The construction process was simulated using the finite element analysis software MIDAS-GTS,complemented by real-time monitoring data to evaluate the design and construction scheme.The results indicate that the additional displacements in all directions at the top of the high-speed railway bridge piers throughout the various construction stages comply with standard requirements.The proposed design and construction scheme for the road subgrade crossing beneath the high-speed railway bridge is deemed feasible,with the observed settlement monitoring curves closely aligning with theoretical analysis.Using simulation modeling to appraise design solutions in this context is thus deemed viable.
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