Analytical Study on Pavement Surface Deflection Profiles Generated by MWD

Key Points

• The study aims to clarify the deflection shape of pavement surfaces during vehicle movement using MWD.
• Developed and utilized a mobile deflection measuring device (MWD).
• Conducted finite element method (FEM) analysis considering viscoelastic properties.
• Analyzed variations in deflection based on vehicle speed and pavement structure.
• Confirmed that pavement surface deflection shapes vary with vehicle speed and pavement structure.
• Showed potential to estimate the elastic modulus of the subgrade using a new approximation formula.

Abstract