机场道面地基参数的识别与转换

IDENTIFICATION AND TRANSFORMATION OF THE FOUNDATION PARAMETERS FOR AIRPORT PAVEMENT

提出一种机场道面地基参数识别与转换的方法.基于文克勒地基板理论和弹性半空间理论的计算模型,应用最小二乘法准则,通过实测挠度与理论挠度进行拟合来识别地基回弹模量E0和反应模量K.并依据实测点挠度相等的方法实现E0和K值之间的转换.实例计算表明所得结果具有较好的精度.

In this paper, an identification and transformation method for foundation, parameters of airport pavement is proposed. Based on the theory of Winkler foundation plate and the theory of elastic semi-space model, the theoretical deflections of the airport pavement are derived. The least square method is used to identify the resilience modulus of foundation E0 and the response modulus K by fitting the testing and theoretical deflections. The transformations from E0 to K and from K to E0 are also realized by using the equal deflection values of testing points. A testing deflection of an airport pavement is used as a numerical example. Table 2 shows the identification results of K and E0. Table 3 and Fig.2 show the high accuracy of the results by comparing the testing deflection with the identification deflection. Table 4 and Table 5 show that we may easily transform E0 to K and then transform K to E0 of the airport pavement.