Research On Cement Concrete Bridge Deck Interface Layer Structure And Mechanical Properties

Bridge Deck surfacing as a special project, in the course of long-term use by the traffic loads, such as the impact of natural factors, and its destruction in addition to ordinary common types of road pavement, but also has its own unique system for bridge deck pavement of damage types. Now, however, only from the bridge deck pavement design the overall point of view put forward some requirements, because of current research work is not systematic and in-depth, no refinement, in particular the lack of structural characteristics of interlaminar stress analysis, as well as the structural layer of concrete raw materials technical requirements, making the actual use of the process there is a fair amount of scope, eventually leading to the physical works hard to meet the bridge deck pavement of the performance requirements. This article made reference to the latest research results at home and abroad, rely on the Transportation Committee of Chongqing Science and Technology Project " cement concrete bridge deck asphalt concrete pavement of south-west region of high temperature and wetter ", carried out in order to cement concrete bridge deck asphalt pavement as the center of the bridge deck pavement structure and interface layer mechanical properties.First of all, to study the work of bridge deck pavement conditions, including a bridge where the regional climate conditions, as well as traffic conditions, and on this basis on the Bridge Deck on the mechanical properties of the theoretical analysis carried out. ANSYS finite element software through the set up sub-model analysis, followed by an analysis of bridge deformation, local deformation, as well as Pavement role by the wheel load, the bridge deck pavement layer interface between stress and strain the situation. Thesis focuses on the pavement under wheel load at pavement layer interface between stress and strain the situation,fully illustrated study of the need for bridge deck pavement.Secondly, on the Bridge Deck Waterproofing bonding interface between the mechanical properties of layers of conducting a pilot study, carried out, including inter-layer interface shear strength, dynamic shear and pull-out strength analysis of fatigue. It was found SMA-10 has a better anti-fatigue effect of dynamic shear.Experimental Analysis of the above set up the interface layer between the failure stress constitutive model is obtained between layers of the interface bond-slip constitutive relationτ-s. And to study the bridge deck pavement of the asphalt mixture and asphalt mixture surfacing composite structure. Mainly related to the asphalt mixture mechanical properties of experimental analysis, including high temperature stability properties, shear properties, properties of water stability test; At the same time, portfolio structure of pavement temperature stability and durability to carry out the study. And recommend the top SMA-13 + following of SMA-10 asphalt mixture as a combination of the structure of cement concrete bridge deck asphalt concrete pavement.Then, the structure of a bridge deck waterproofing systems research, on this basis a summary of the evaluation of bridge deck waterproofing system target.Finally, the combination of Yudong Yangtze River Bridge Deck Pavement engineering, test engineering on-site application and evaluation studies. For future projects to promote the application of accumulated practical experience.