The Design And Mechanics Response Analysis On The Half-flexible Base Asphalt Pavement

In the our country,The halt-rigity base course asphalt mixture pavement is the main structure style of expressway,However the halt-rigity pavement designed by our county's designer can't accord the require of expire design time limit,so they'll broken as track, cave and crack in the practise earily,These destroy shorten the life of pavement practice,at one time ,infect the pavement's normal use badly,extremely arouse the traffic accident. Faceing the pressured task which prevent and maintain the early destroy of halt-rigidity pavement and the serious rebuild task to the halt-rigidity pavement,if only use new halt-rigidity pavement instead the inhere pavement ,The early destroy won't be solve for ever.So the mothod that using the new halt-rigidity structure instesd the inhere structure can deceive people temporarily,These modus operandi only can prolong the little life of pavement.This thesis add the design index to control the reality pavement destroy base on the overseas's design mothed.The thesis advance the halt-flexible basr courser that modl is among the halt-rigidity material and flexible material through compara the halt-rigidity material with flexible material.Because half-flexible material has the intensity character of the halt-rigidity material,at one time , has the resist-fatigue and resis-constriction caused from temprestrue character of the flexible material,designing the reasonable halt-flexible basic layer asphalt pavement can resolve the early destroy problem on the presented pavement in our country goodly and prolong the life of the pavement. The article compare and analysis the halt-rigidity pavement and halt-flexible pavement from the stress response that thinking over the temp-stress and pavementbed strain,and point the disadvantage of the halt-rigidity pavement,and make sure the reasonable design mothed about the halt-felxible pavement and typical pavement structure combination.finally,the thesis analysis the crack stress of the damaged Semi-rigid base,and advance the halt-flexible base course asphalt pavement structure that can adapts the tempreture and crack stress,consides the influence of roadbed strain and temp-stress.This text aim is breaking the asphalt pavement traditional design principle of the our country and consistentlying use the halt-rigidity material to be the base of the asphalt pavement to derivate the new design way to the bituminous pavement and anticipate the applied new way of thinking with new pavement material, to guide the function in early days in solving the early damaged semi-rigid base bituminous pavement.