Mechanics Analysis And Design On The Asphalt Pavement Of Cement Concrete Bridge

At present, the structural disarrangement of the bridge pavement becomes one of first-class highway main plant diseases, seriously has affected the traffic safety and comfortableness,and has created the huge economic loss. Therefore, this article unifies the Hubei Province transport department science and technology project "the pavement material composition and the structural design research", take suppresses or the reduced pavement plant disease occurrence, the improvement paving level grade of service as the goal, has launched the system analysis and the research.First, the research summarized the domestic and foreign research survey of the cement concrete bridge asphalt paving, and carries on the investigation to the cement concrete bridge asphalt paving of the province, in view of the main plant disease type of the bridge pavement, has carried on the reason analysis, and proposed the paving corresponding design control target.Next, uses finite element analysis software, establishes several kind of bridge mechanics analysis model. Among them, fully considered continual condition between the bridge paving and Bridge floor, introduction continual condition simulation layer, through the computation analysis, had determined the simulation layer part continual condition computation parameter, and causes the computation model to be more reasonable. Afterwards, the stress characteristic analysis has been carried on to the above various typical bridge pavements. The result indicated that, the influence of vehicles load position as well as the bridge structural style is extremely limited to the bridge paving endogen force. Based on this conclusion, for causes the following analysis simple and has the universal significance, this article is unified various bridges model, and carries on the revision and the examination, has established the cement concrete bridge asphalt paving unification analysis model.And then, uses the unification analysis model, and take various type of plant diseases design control target of the pavement flooring as the analysis object, explores it along the paving thickness direction distributed rule, to clear about the mechanics division of labor of various structures layer of the pavement, sets the corresponding function request to its selection. At the same time, has analyzed the influence of the change of bridge pavement structure and the material parameter to performance of the pavement resisting each kind of plant disease. Summarizes technical measure and the principle on avoiding or the reduction pavement plant disease material.Finally, according to the theory of paving layer division of labor, and aims at the phenomenon that in the current bridge pavement design, the structure combination design material composition design existence comes apart, proposed the asphalt concrete pavement design method which structure and the material are unification. At the sometimes, Full considerate the actual project and the technical measure and the principle which had Mentions. draws up each kind of flooring level form that material and the structure are combination , and through the computation analysis, has finally determined the combination form of pavement which has better anti-plant disease performance.