Analysis of Deflection Response Characteristics and Modulus Sensitivity of Resonant Crushed Stone Pavement
The evaluation of structural strength of resonant crushed stone pavement is essential to mas-ter its carrying capacity.In order to explore in depth the characteristics of structural deflection,the fi-nite element model of resonant crushed stone pavement based on ABAQUS was studied,and the law of deflection space distribution is analyzed.Furthermore,the crushed stone layer was divided into three layers to transform its modulus and analyze the sensitivity of deflection.It was found that the deflection presents"M"type distribution along the transverse section and the"mountain"type distri-bution along the longitudinal section.With the increase of each layer modulus,there are different de-grees of reduction,and the structure layer deflection change in the low modulus interval is faster.In the medium and high modulus interval,the deflection decreasing rate remains high with the increase of the upper and middle layers of the crushed stone modulus,but the deflection sensitivity to the change of the lower layers of the crushed stone modulus gradually decreases.The research can provide some theoretical basis for the structural strength evaluation of resonant crushed stone pavement.
road engineeringresonance crushed stone pavementthree-dimensional finite element simulationmechanical responsedeflection analysis
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