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土基回弹模量的准确性直接影响到路面结构的安全性和经济性。由于野外承载板法费时、费力,且测点位置的选取以及测点多寡对回弹模量的影响,室内试验是一种不可缺少的方法。文章以弹性层状体系理论为基础,对室内承载板法测定土基回弹模量进行了有限元分析,并通过工程实例进行了验证。结果表明室内模拟承载板法测定土基回弹模量应乘以0.95这个修正系数,为室内合理测定土基回弹模量值提供参考依据。
The accuracy of earth-based rebound modulus directly affects the safety and economy of pavement structure. Due to the time-consuming and labor-intensive load-carrying method in the field, the indoor test is an indispensable method because of the location of measurement points and the influence of measuring points on the elastic modulus. Based on the theory of elastic layered system, the finite element analysis of the modulus of elasticity of the soil bed by the method of indoor bearing plate is carried out and verified by engineering examples. The results show that the modulus of elasticity modulus of soil foundation should be multiplied by the correction coefficient of 0.95 to provide a reference for the reasonable determination of modulus of elasticity of soil foundation.