Effects of Material Design Parameters on Mechanical States of Bridge Deck Pavement

Abstract

Bridge deck pavement is suffered from more complicated stresses than ordinary pavement, and mechanical states of the paving layers are influenced by material design parameters. After mechanical computation, the effects of material design parameters on mechanical states and variational law of the pavement were analyzed. Analytical results indicate that following the traditional HAM design method cannot adapt to actual mechanical states and easily result in usual distress types on the asphalt concrete paving. The economical and reasonable paving materials should be designed or developed according to paving mechanical characteristics, such as multilevel dense built-in modified HMA, fiber-reinforced asphalt concrete and modified SMA, which can harmonize paving layers as a whole, adapt to deformations of bridge deck, improve mechanical states of the paving layers, last service years, and offer some helpful references for similar bridge deck pavement design.