Analysis on Mechanical Response of Composite Pavement under Different Seasonal Effects
In order to study the mechanical response of composite pavement in different seasons,taking an airport reconstruction project in the Central China as the project background and using the three-dimensional finite element software,a finite element model of pavement is established to analyze the mechanical response of composite pavement under the influence of temperature.Compared with the airport monitoring data,the accuracy of the model is verified.The study has found that the depth range of the pavement affected by the atmospheric temperature is within 0.56 m.Compared with the atmospheric temperature,the peak temperature of the pavement is much greater than the peak temperature.The temperature variation trend between the different structural layers within the pavement is same.With the deepening of the pavement depth,the temperature peak gradually decreases,and there is a time delay phenomenon.In the different seasons,the deformation of the pavement caused by the same aircraft type is different,which indicates that the temperature has an impact on the stress on the pavement,and in which the strain value generated by the concrete layer in winter is reduced by about 74％compared to that in summer.The change is greatly obvious.
road engineeringfinite element modeltemperature fieldthermal couplingairport monitoring
NETL
NSTL
万方数据
维普
