The Analyse Of The Capability Of Asphalt Pavement To Resist Slip And The Design Of OGFC

With the development at full speed of the expressway,people face the threat of the traffic accident too while enjoying more and more convenient fast traffic. Analyse cause of accident, to resist slippery strength an important factor among them road surface. Improve resisting the index that slippery ability needs considering especially while already becoming design of road today of the road.This text proceeds from rub,the hydraulics theory, analyse the contact situation of the road surface and tire,it is analysed that the water accumulation resists the influence of slippery ability on the road surface,thus explained the importance of draining off water. Use the relevant water drainage situation on road surface of theoretical research of the influent,resist slippery design and construction of top layer to drain off water to resist through OGFC slippery performance go on practice prove road surface finally.Is it is it gain knowledge to tire and dry to exposed to state frictional force is it is it analyse to go on to commit road surface have to rub to use at first,lagging behind in forming frictional force elasticity on function,glueing and cutting function to analyse a little separately, state the building stones lamination and construct the influence that the depth resist slippery performance to the road surface;Is it is it set up tire sport model to transfer according to elasticity of tire to to slip,is it slip person who move adhere to relation of coefficient with road surface to establish.Have through elastic fluid lubricated theory to tire and road surface water tire receive strength situation at the membrane secondly,is it take place water membrane tire received coefficient of friction when lubricating to get,prove way area water to danger that automobile go safely theoretically. It is analysed that water membrane is lubricated to the influence of resisting slippery ability of road surface of pitch,have analysed the water-skiing phenomenon of the tire in there is water of area of ways cases of the tire. Set up tire happen tire,road surface,water contact model of membrane when water-skiing,carry on the theory to derive through the critical speed while moving mechanics under the strength function of water pressure and analysing of the tire that water-skies to the tire.And then according to influencing the pitch road surface to resist various kinds of slippery factors,resisting slippery performance of road surface has carried on analysis and discussion to draining off water. Drain off water to resist slippery performance come from pitch road surface larger structure depth and its water drainage function of each road surface. The space rate of the road surface is relatively great to drain off water,the ones that were adopted are mostly to open one grade of bituminous concrete mixed,drain off water road surface structure depth of each than resisting slippery top layer heavy general,have research indicate road surface is it is it after longing run,drain off water structure of road surface most slow to pass to go through,thus improved the long period of time that the face resists slippery performance of arranging . Except the factor that construct depth ,drain off water road surface outstanding water drainage ability is it have way area resisting slippery ability raise greatly at the water to make. Have been analysed by the water drainage performance on the road surface to draining off water of knowledge principle of the influent, draw the theory formula of drainage speed,draw and drain off water the impact on critical speed of infiltration coefficient on the road surface.Is it make grade mix pitch wear and tear laye(rOGFC)resist slippery design research of top layer to go on finally,OGFC is designed but still at the stage of exploring in China,the foreign successful experience and analysis on big hole mixture characteristic have put forward OGFCsuitable for our country and resisted the design method of the slippery top layer through using for reference. Through test to OGFC way drain off water ability and measuring of coefficient of friction from practise respect prove drain off water road surface outstanding resisting slippery performance.