Several investigations have shown that structures with rocking foundations bring more stability and fewer instances of post-earthquake damage to superstructures by dissipating seismic energy within the underlying soils. Nevertheless, there are still obstacles to making this design philosophy a practical solution, including concerns about the residual settlements and rotations. In order to provide a better insight into the problem, the present paper investigates the performance of a simple structure with a rocking foundation, taking advantage of pushover and time history analyses. The finite-element method is applied for the study, and the numerical model has been validated using results from recent experimental research. Accordingly, the effect of a number of influential parameters involving the properties of soil, structure and ground motions is evaluated. The current research considers different static safety factors against soil shear strength failure, structure slenderness ratios, earthquake records and foundation embedment depths, and the response of the systems with rocking foundations has been elaborated using the results obtained. The contribution of the investigated parameters is pronounced in the main features of the rocking foundation performance, such as the system moment capacity and foundation deformations (settlement and rotation).

中文翻译：

---

影响浅基础晃动响应主要因素的数值研究

多项调查表明，具有摇摆基础的结构通过消散下方土壤中的地震能量，可以提高稳定性，并减少上层建筑震后损坏的情况。然而，使这种设计理念成为实际解决方案仍然存在障碍，包括对残余沉降和旋转的担忧。为了更好地了解该问题，本文利用推覆和时程分析研究了具有摇摆基础的简单结构的性能。该研究采用有限元方法，并利用最近的实验研究结果验证了数值模型。因此，涉及土壤特性的许多影响参数的影响，评估结构和地面运动。目前的研究考虑了针对土壤剪切强度破坏的不同静态安全系数、结构长细比、地震记录和地基埋置深度，并利用所获得的结果详细阐述了具有摇摆地基的系统的响应。所研究的参数的贡献在摇摆地基性能的主要特征中很明显，例如系统力矩能力和地基变形（沉降和旋转）。