Design Of Drainage Asphalt Pavement

As the Process of urbanization of our country to further speed up the process,the urban road has got develop rapidly , and the water damage of pavement is becoming more and more serious,the infiltration of water is one of the main factors which cause water damage, although it takes some measures on pavement waterproof and drainage in our country, but the water damage of bituminous pavement still exist.This paper analyzed the main cause of damage and summarized the characteristic of water damage based on the damage investigation data of bituminous pavement on the Third Ring of wuhan,then researched on the City Expressway and hydrops in asphalt pavement, also described in detail the relation on asphalt pavement law of seepageand hydrops in asphalt pavement,seepage,and the water damage of bituminous pavement.The analysis comparison our country first-class highway general road section with each kind of special road section draining water design proposal, has at present carried on the comprehensive generalized analysis to each kind of special road section hydrology water power computation, inferred eachkind of road section catchment area, question and so on gutter inlet spacing, gutter inlet build formulas.Begin with the geometry design of the City Expressway,respectively, on the transect,vertical section and the plane vertical section design of the three aspects of portfolio analysis,puts out optimization optimistic methods from geometry design which is profitable for pavement surface drainage.