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采用轴对称动力有限元结合系统识别反分析理论进行路面模量反算,考虑了落锤式弯沉仪(FWD)荷载作用下的路面反应动力效应。通过两个算例分析,体现出与拟静力反分析相比,动力反分析更符合实际,而拟静力法只有在基岩深度较深时是合理的。
The back-analysis theory is used to calculate the pavement modulus by using the axial symmetry dynamic finite element method and the dynamic response of the pavement under the load of the falling weight sinker (FWD). Comparing two examples, it shows that dynamic back analysis is more realistic than pseudo-static back analysis, and pseudo-static method is reasonable only when depth of bedrock is deep.