According to the investigation and inspection on asphalt pavement corrugation section above semi-rigid base in Gan-Ding Highway,the causes of asphalt pavement corrugation are analyzed based on non-loading cracks of base,hydrodynamic pressure and dynamic effect of vehicles.

Cement Concrete pavement damage arising from the early to explore the non-load factors

Application of synchronous chip seal to reducing the nonreflective cracks for semi-rigid pavement

The specific features of acting pressure and stress of involute scroll teeth were analyzed and the criterion for calculating bending fatigue-strength of scroll tooth roots was determined with a load model based on tooth root bending-fatigue strength being obtained.

In this study,through analyzing the deficiency of existent three-dimensional CAD system in depicting load information of product,consides that only establishing load model can carry real product design,then brings forward the basic idea of load model through analyzing part loads.