Parameter identification of Pasternak foundation models (PFM) is never satisfactory, which discourages the application and popularization of PFM. In the present study, an energy-based model to predict the dynamic foundation coefficients was proposed using the vibration kinetic energy and potential energy of a Pasternak foundation-rigid plate system. On the basis of the Pasternak foundation, the relationship among the natural frequency, dynamic foundation coefficients, rigid plate configuration, and vibrating soil equivalent mass per unit area was considered. To obtain the natural frequencies of the Pasternak foundation-rigid plate system, dynamic tests were performed. Using two or more dynamic test results of various rigid plates on a foundation, a set of equations of dynamic foundation coefficients was set up to directly identify the foundation coefficients and equivalent mass per unit area of vibrating soil. The feasibility of the proposed method was verified by comparing it with the outdoor and indoor test results and finite element analysis results. When the proposed method is used to obtain the dynamic parameters, PFM can be generalized and applied more widely in engineering practice.

Pasternak基础模型（PFM）的参数识别永远不能令人满意，这阻碍了PFM的应用和推广。在本研究中，利用 Pasternak 地基刚性板系统的振动动能和势能，提出了一种基于能量的模型来预测动态地基系数。以Pasternak地基为基础，考虑了固有频率、动力地基系数、刚性板配置和单位面积振动土当量质量之间的关系。为了获得 Pasternak 基础刚性板系统的固有频率，进行了动态测试。在一个基础上使用两个或多个各种刚性板的动态试验结果，建立了一套动力地基系数方程，直接确定了振动土的地基系数和单位面积等效质量。通过与室内外试验结果和有限元分析结果的对比，验证了该方法的可行性。当采用所提出的方法获得动态参数时，PFM可以在工程实践中得到更广泛的推广和应用。