ABSTRACT
ABSTRACT: Cracking is the main distress of pavement on steel orthotropic bridge deck. The crack of pavement on steel orthotropic bridge deck is surveyed in China and the character of cracks is analyzed. The strain state of pavement on steel orthotropic bridge deck is measured in site of Queshi Bridge in China. The strain state of pavement on steel orthotropic bridge deck under static vehicle load and dynamic vehicle are measured by strain gauges. The results of measurements show that the asphalt deck pavement is of viscoelastic character evidently. The stress state and strain distribution of deck pavement under the tire load are studied through finite element method. And the results of numerical simulation analysis and experimental measurement are compared, which shows that numerical simulation analysis can accord with experimental measurement well. Four types of pavement material are designed and the anti cracking performance is compared through fatigue test.
1 INTRODUCTION
