Studies Of Typical Structure For Qinhuangdao's Asphalt Pavement

In this paper , a series of surveys on road condition , pavement-performance and destroy reason are analyzed , soil property , hydrologic regime are combined , modulus of resilience are confirmed on heavy compaction test , foundation classification in area of Qinhuangdao is divided into 3 grades and highway is divided into 3 districts according to the principle that different soil grades produce the same effect on thickness of base course or bottom course , Classification of traffic is divided into 4 grades after observation materials of traffic volumes are collected extensively , traffic characters and parameters are analyzed . A series of tests on semi-rigid materials and bituminous mixtures are carried out to proposed the value range of material parameters . The sensitivity analysis of design parameter of subgrade and pavement are used to confirmed the degree of impact on working state with change of the design parameter , it is the rational and economy that the range of design parameter are proposed . Structure combination design is used to proposed basic structure of Qinhuangdao's asphalt pavement in view of local natural environment, build material, traffic classification and soil grades .This paper puts forwards suiting 39 kinds of typical structure of Qinhuangdao's asphalt pavement according to the actual structure , experimental section long-term observation , extensive surveys , structure theory's analysis and calculation . Its achievement in research will guide the designer's work directly , it can avoid random and blindness , it will have important on development of Qinhuangdao's highway . There is a certain directive significance to other areas too.