Research On Force Analysis And Key Technologies Of Heavy Load Traffic Pavement Of Cement Concrete Bridge Deck

In the transportation network, bridges as an important hubs and nodes play animportant role. In a real world application, the service life of bridge pavement is far lowerthan the road pavement structure due to special conditions of use, such as the structurecombination, load, environment and vibration, large deflection deformation and so on.In this paper, the methods of theoretical analysis, indoor material test and entityengineering validation have been utilized. In the theoretical analysis, researchers built aFEM model using general finite element software ANSYS, and selective analyzed the stressand strain state in the condition of asphalt concrete layer thickness and interlayer bondingstate changes and proposed the structure of bridge pavement based on this analysis. In theindoor material test, putting forward a new grading design and optimal mixture ratio designmethod, researchers achieved a target that material design accorded to the bridge deckpavement function. For the bridge deck typical damage characteristics in the using process,the researchers focused on the evaluation of rutting resistance, water damage and interlayershear ability. By developing the dynamic test method, researchers made a preliminary teston the structural response, compared with the FEM result, and made a correction.According to the characteristics of the cement concrete bridge, the researchers made thecorresponding construction technology, quality inspection standards and methods. Throughreal engineering verify the rationality and validity of the various technological measures,the researchers improve the method of bridge deck pavement construction technology.Finally, researchers presented a method of flip chip asphalt concrete pavementstructure for the cement concrete bridge pavement, a method of skeleton-embedded typestructure and grading design, a method that determine the optimum proportion of asphaltbased on the most closely embedded squeezed state asphalt mixture, and built a bridgedeck pavement system full scale unit structure test platform, and proposed a test methodof mechanical response of bridge deck pavement based on the full-scale bridge deck structure unit model.