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为了使结构与地基间接触面的模拟计算既易于工程实际应用又有较高精度，通过分析研究Ｇｏｏｄｍａｎ单元与Ｄｅｓａｉ提出的薄层单元，综合了二者的优点，在有厚度的Ｇｏｏｄｍａｎ单元模型基础上，借鉴Ｄｅｓａｉ构筑接触面单元的思想，在单元数值模型中，引入了控制嵌入的方法。在本构关系上，所用的模型同时考虑了接触面法向和切向的非线性特性，并提出了超余应力转换和嵌入调整混合迭代模式。依据上述接触面单元模型编制了有限元计算程序，利用此程序进行的算例分析，验证了模型的合理性和程序的计算精度。
In order to make the simulation calculation of the contact surface between structure and foundation not only easy but also practical for engineering application and high accuracy, the advantages and disadvantages of both Goodman unit and Desai are analyzed and analyzed. Based on the Goodman unit model with thickness On the basis of Desai’s idea of constructing contact surface elements, the control embedded method is introduced in the unit numerical model. In the constitutive relation, the model used to consider both the normal and tangential nonlinearities of the contact surface, and proposed a hybrid iterative mode of over-stress transformation and embedding adjustment. Based on the above interface element model, a finite element calculation program was compiled, and the example analysis of this program was used to verify the rationality of the model and the calculation accuracy of the program.