考虑非均布荷载的柔性路面有限元分析

Flexible Pavement Finite Element Analysis Considering Non-uniform Load

在我国现行沥青路面设计规范中,轮胎对于路面的作用被简化为双圆均布荷载,然而实际情况却并非如此。当需要对沥青路面结构进行比较全面的力学响应分析时,就必须考虑轮胎荷载的非均布特性对路面结构的影响,否则难以得出正确结果,但现行规范的计算方法在考虑该情况时存在较大的局限。结合有限元法和假设轮胎非均布荷载为解决这种局限性提供了可能,并结合计算实例阐述了非均布荷载对于计算结果的影响。

In existing asphalt pavement design criterion in China, the act from fire to pavement is simplified as dual circle uniform load, however, the actual situation is not likely. When relatively overall mechanical response analysis is required to asphalt pavement structure, influence from non - uniformness of tire load to pavement structure must be taken into consideration, or it＇ s hard to achieve correct results. However the calculation method in current criterion is greatly restricted when this situation is taken into consideration. This paper, combines finite dement method and assumes non - uniform load of tire, offeres possibility in solving this restriction, integrated with calculation samples, it demonstrates influence to calculation results from non- uniform load.