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板边弯矩的计算是机场刚性道面板设计的重要内容,传统采用手工在板边弯矩影响图上数格的方法,计算效率低且误差在所难免。首先建立板边弯矩影响图数据库,然后用excel内嵌的VBA功能,通过程序判断板边弯矩影响图每个网格的结点与轮印的相对位置以及在不完整网格内均匀布点的方式,采用程序计算出不同机型一个主起落架轮印覆盖的格数,即可精确计算出板边弯矩。通过算例验证表明,该方法的计算误差随着在不完整网格内均匀布点的密度增大而减小,当按照0.02网格长×0.02网格宽的密度布点时,计算误差在0.001以内。上述方法不仅可彻底避免主观因素带来的误差而且大大提高计算效率,基于上述原理还可开发出机场刚性道面设计软件。
The calculation of the bending moment on the edge is an important part of the design of the rigid road panel in the airport. The traditional method of using the bending moment of the plate to influence the number of grids on the graph is inefficient and the error is inevitable. First of all, establish the influence graph database of bending moment on the board, and then use the Excel embedded VBA function to judge the bending moment of the board through the procedure to influence the relative position of node and wheel printing of each grid and the uniform distribution in the incomplete grid Way, using the program to calculate the different models of a main landing wheel cover the number of grids, you can accurately calculate the bending moment. The results show that the calculation error of this method decreases with the increase of the density of uniform distribution points in the incomplete grid. When the grid density is 0.02 grid wide × 0.02 grid wide, the calculation error is less than 0.001 . The above method can not only completely avoid the subjective factors brought about by the error and greatly improve the computational efficiency, based on the above principles can also be developed airport rigid pavement design software.