摘要
选取一个全部满足自由边界条件和自由角点条件的挠度函数 ,运用能量方法 。
The flexural function which consists of trigonometrical function and polynomial expression is selected.It satisfies all the boundary conditions on free edges and the conditions at four free comer points.Using the energy method,we obtain a better approximate solution.Based on them,the stress of concrete pavement under the wheel-loading can be shown in brief.
