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分析落锤式弯沉仪的弯沉数据得到的路面层模量与实测的沥青层芯样劲度模量,然后利用理论的模型计算路面响应,比较测量和理论计算的值。采用多层弹性理论反算模量。正算时采用了三种不同的理论模型,三种模型分别为多层弹性理论;当量厚度的线弹性方法及考虑沥青层粘弹性的有限元方法。结果表明,利用有限元方法计算的结构响应更加接近实际测量结果。
Analysis of the deflection data of the falling weight deflectometer pavement layer modulus and the measured asphalt layer stiffness modulus, and then use the theoretical model to calculate the road surface response, the measured value and the theoretical calculation. Multi-layer elasticity theory using the inverse modulus. Three different theoretical models were used. The three models are multilayer elastic theory, linear elastic equivalent thickness method and finite element method considering asphalt layer viscoelasticity. The results show that the structural response calculated by the finite element method is closer to the actual measurement results.