路面弯沉盆上的惰性点

Inertial Point on Deflection Basin of Concrete Pavement and Asphalt Pavement

论证惰性点的存在性和唯一性 ,分析惰性点的特性。分析结果表明 ,路面弯沉盆上的惰性点不仅是存在的 ,而且是唯一的。根据大量的计算结果 。

The backanalysis of pavement structure based on the measured pavement deflection basin has become a major method for nondestructive evaluation of pavement structure. In general, commonly used backcalculation process has no unique solution, therefore greater errors exist in the backcalculated results. Through analyzing the pavement deflection basin, the authors found that there was a point on the pavement deflection, which is insensitive to the change of upper layer modulus, this point has been called as inertial point (IP). The analysis results in this paper testify the existance and uniqueness. Based on the analysis results, the relationships among IP position IP deflection, and pavement structure parameters, have been given.