Performance Evaluation Of Bridge Deck Asphalt Pavement Layer

With the development of China's bridge, bridge deck pavement, either from design or construction are more and more attention, in Bridge Deck Pavement research, there are many. However, China's "asphalt pavement design specification" (JTGD50-2004) did not give any of deck pavement design or theoretical guidance, but only in accordance with some experience in the construction of production of material, thickness, etc. to do some guidance notes. According to the survey the bridge deck pavement prone to premature failure, particularly in the bridge deck pavement layer and delamination between the damaged panel, once produced, the upper structure of the bridge there is a continuous state of the original into a sliding state. Leading to the bridge pavement pavement performance dropped drastically. According to studies, less than the strength of bridge deck pavement pavement damage is not a major cause of bridge deck pavement layer and the waterproof bonding layer between the structural failure is the main reason for the damaged pavementTherefore, this article through in the bridge pier position and the cross position's flooring layer upon layer and the floorboard and the paving level the embedment shearing strain sensor, gathers separately in the testing car overload - 13%, overload 0%, overload 20%, overloads 40% and so on operating modes, with testing car by 30km/h, 40km/h, 50km/h uniform velocity operating mode combination and so on uniform speed travel, emergency brake shearing strains. Analyzes different operating mode and so on load, different position, uniform speed travel and brake shearing strain change rules. And to under the different position, the different operating mode condition's flooring level road carries on the appraisal with the performance. Its result indicated under the overload and the emergency brake operating mode, each item of shearing strain considerable increase, under the same level operating mode the cross position produces the shearing strain is bigger than the bridge pier position's shearing strain. This experiment road uses the flooring level lays the plan to be possible to satisfy in the design age limit the operation requirements.