Several experimental studies have shown that rocking shallow foundations have beneficial seismic performance features: recentering and energy dissipation with little damage. A new publicly available database, “FoRDy” (Foundation Rocking—Dynamic), summarizes the results of dynamic physical model tests of single-degree-of-freedom-like structures supported on rocking foundations. It contains data from five centrifuge and three 1-g shaking table test series that were conducted at experimental facilities in the United States, Greece, and Japan. The database includes 200 model “case histories” that span a wide range of model sizes, soil and structure properties, and seismic excitations. It is compiled as the first step toward building a comprehensive dynamic rocking foundation database, and it has the potential to grow in the future. To illustrate its usefulness, the data are used to show example correlations between the peak drift ratio demand and selected ground motion intensity measures. The results suggest that peak ground velocity (PGV), peak ground displacement (PGD), and the geometric mean of the linear spectral displacement over the period range of 0.2–3 times the initial natural period predict the peak drift ratio response reliably.

中文翻译：

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摇摆浅基础性能数据库：动态振动

多项实验研究表明，摇摆浅地基具有有益的抗震性能特点：重心和能量耗散且损伤小。一个新的公开数据库“FoRDy”（Foundation Rocking-Dynamic）总结了支撑在摇摆基础上的类单自由度结构的动态物理模型测试结果。它包含在美国、希腊和日本的实验设施中进行的五台离心机和三台 1 克振动台测试系列的数据。该数据库包括 200 个模型“案例历史”，涵盖范围广泛的模型尺寸、土壤和结构特性以及地震激发。它被编译为构建综合动态摇摆基础数据库的第一步，并且在未来具有增长潜力。为了说明其有用性，数据用于显示峰值漂移比需求与选定的地震动强度测量之间的示例相关性。结果表明，峰值地速 (PGV)、峰值地位移 (PGD) 和线性谱位移的几何平均值在 0.2-3 倍初始自然周期的周期范围内可靠地预测了峰值漂移比响应。