Damage On Pavement Structure By Overloading Transport

Since the reform and opening goes deeper in our country, the rapid progress of highway construction, not only develops the economy along the line, but also changes greatly constructor of highway transportation. As a result the character of overload ,big traffic volume and channelized traffic is more and more apparent. Great traffic volume and heavy load make serious damage on the surface structure of the road and lead early destruction in varying degree on it.Based on the former research findings, against to early damage of pavement structure by overload, according to the design specification, this paper start the research from the relation between overload and pavement design method, through analyzing the pavement destruction of overload, study the overloads affection on pavement perfonnance, pavement material design and the affection of structure design. The result shows that overload traffic increases the early destruction to pavement, and decreases the normal service life. The overload traffic also brings error into the load statistics and it makes fatigue life short rapidly with the number of overload increasing. It makes loading stress changes in pavement structure and it makes loading stress and thickness of pavement larger.