Research on Splicing Technology of Expressway Reconstruction and Expansion Based on Finite Element Method

To address the mechanical performance issues of the splicing structure between new and old pavements in expressway reconstruction and expansion projects, this study employed ABAQUS software based on the three-dimensional continuum finite element method to systematically analyze the effects of load magnitude, layer modulus, and number of steps on the interlayer stress of the spliced pavement. The research findings can provide theoretical basis for the splicing design and construction control of highway widening and reconstruction projects.