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Dynamic Response of Saturated Asphalt Pavement Based on Three Dimensional Finite Element Simulation
It has been recognized that asphalt pavement performance will be weakened with the presence of water within pavement structure. However, current mechanistic analysis does not take into account the moisture influence on the dynamic response of pavement appropriately. In this paper, finite element meshing, boundary conditions, material properties and dynamic loading were introduced, followed with the analysis of typical time history pore pressure. Then, the mechanism of premature failure related to water damage was discussed based on on-site damage phenomenon combined with the finite element simulation according to the spatial distribution of pore pressure and the comparison between the saturated and dry cases. Finally, the influence of surface drainage conditions on the dynamic response of saturated pavement is presented here. The result indicates that the presence of water changes stress distribution in pavement structure. What's more, it is interesting to find that the worst positions are the middle and bottom HMA layer according to the distribution of pore pressure, which was consistent with the initial failure phenomenon of asphalt pavement due to water.
Dynamic Response of Saturated Asphalt Pavement Based on Three Dimensional Finite Element Simulation
It has been recognized that asphalt pavement performance will be weakened with the presence of water within pavement structure. However, current mechanistic analysis does not take into account the moisture influence on the dynamic response of pavement appropriately. In this paper, finite element meshing, boundary conditions, material properties and dynamic loading were introduced, followed with the analysis of typical time history pore pressure. Then, the mechanism of premature failure related to water damage was discussed based on on-site damage phenomenon combined with the finite element simulation according to the spatial distribution of pore pressure and the comparison between the saturated and dry cases. Finally, the influence of surface drainage conditions on the dynamic response of saturated pavement is presented here. The result indicates that the presence of water changes stress distribution in pavement structure. What's more, it is interesting to find that the worst positions are the middle and bottom HMA layer according to the distribution of pore pressure, which was consistent with the initial failure phenomenon of asphalt pavement due to water.
Dynamic Response of Saturated Asphalt Pavement Based on Three Dimensional Finite Element Simulation
Dong, Zejiao (author) / Cao, Liping (author) / Cheng, Xiaoliang (author)
Ninth International Conference of Chinese Transportation Professionals (ICCTP) ; 2009 ; Harbin, China
ICCTP 2009 ; 1-7
2009-07-23
Conference paper
Electronic Resource
English
Dynamic Response of Saturated Asphalt Pavement Based on Three Dimensional Finite Element Simulation
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