Abstract：Based on the structural thickness and temperature parameters of different asphalt pavements, the correction studies on dynamic deflection based on FWD measured data were carried out. By using the fitting method of multi-phase function, a two-parameter model of deflection correction coefficient considering the thickness of pavement structure and the temperature was established. In this model, the sensitivity of asphalt mixture modulus to temperature was taken into account sufficiently, which can ensure that when the thickness of structural layer is 0℃ or the temperature is 20℃, the correction coefficient of pavement deflection is 1, and when the temperature is increased or decreased, the correction coefficient tends to a stable minimum or the maximum value. This model has a clear physical meaning, can reflect the actual states of the pavement materials very well, and make the judgment and evaluation on deflection parameters more scientific and effective.
宋小金 樊亮 . 基于FWD的沥青路面动态弯沉温度修正系数[J]. 土木工程学报, 2018, 51(3): 123-128.
Song Xiaojin Fan Liang . Temperature correction coefficient for dynamic deflection of asphalt pavement based on FWD. 土木工程学报, 2018, 51(3): 123-128.
