Mechanical Behavior And Structural Optimization Design Of Concrete Box Girder Bridge Deck Pavement

As an important part of the whole bridge structure, the bridge deck pavement can not only be used as the load of the stress layer, but also can be used as a protective layer to avoid the premature failure of the bridge deck. Good bridge deck pavement design can provide sufficient capacity to ensure that the bridge has good road performance, on the other hand can improve the durability of bridge structure, the bridge service life is greatly extended.Asphalt concrete bridge pavement layer stress state is very complex and its mechanical properties are not only affected by the constraints of the material itself, but also by the influence of environment and load conditions, so the analysis of pavement layer mechanical characteristics must consider the comprehensive effects of various factors. However in the design and construction of bridge deck pavement, usually the bridge deck pavement only as a bridge engineering subsidiary structure layer, in general, do not be specialized computational analysis, the current standard only on pavement layer thickness and construction method do guidance, has not formed the corresponding design theory and design specifications.The from the failure mode of the study of bridge deck pavement and the failure reason analysis of finite element theory is the guiding theory and ANSYS finite element software, through modeling and Simulation of bridge deck pavement layer stress, calculation and analysis of the mechanical behavior of the bridge deck system and stress distribution. In the course of construction, the deficiency of the theory of bridge deck pavement system design is insufficient, and it also plays a guiding suggestion in the construction process, so as to achieve the purpose of improving the stress state of pavement layer and prolonging service life. Mechanical behavior in the study on the pavement structure of different contact conditions, using a multilayered elastic layered theory analysis, waterproofing adhesive layer thickness and modulus of the change of the influence of pavement layer properties research.