Generally, when a prototype is scaled down to a scale model, all parameters of the scale model should be designed to satisfy the similitude criteria. For a base‐isolated structure with rubber bearings, however, it is technically difficult to obtain small‐sized rubber bearings with the first shape factor satisfying the similitude criteria. This distortion affects the similitude ratio of the vertical stiffness of the bearings and, thus, influences the similitude ratio of the horizontal response of the structure because of the overturning effect. To solve this problem, a coordinative similitude method is proposed for scale model testing of structures with rubber bearings by adjusting configuration of the isolators to match the similitude ratio of the overturning stiffness of the isolation layer. A full‐scale and two 1/3 scaled bearings were designed and tested, and their similitude relations were evaluated. Test results of the model bearings were extrapolated to the OpenSEES model of a conventional model building and a coordinative building designed based on the conventional similitude method and the coordinative similitude method, respectively. A comparison between seismic responses of two model buildings against the prototype building indicates that the coordinative similitude method has significantly larger accuracy than the traditional similitude method.

中文翻译：

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考虑倾覆效应的协调相似法在橡胶轴承结构比例模​​型试验中的应用

通常，当原型按比例缩小到比例模型时，应将比例模型的所有参数设计为满足相似性标准。但是，对于带有橡胶轴承的基础隔离结构，在技术上很难获得第一形状因子满足相似性标准的小型橡胶轴承。这种变形影响轴承的垂直刚度的比值，因此由于倾覆效应而影响结构的水平响应的比值。为了解决这个问题，提出了一种协调模拟方法，通过调整隔离器的结构以匹配隔离层倾覆刚度的模拟比，对橡胶轴承结构进行比例模型测试。设计并测试了一个全尺寸和两个1/3尺寸的轴承，并评估了它们的相似关系。将模型轴承的测试结果外推到常规模型建筑物的OpenSEES模型和分别基于常规相似度方法和协调相似度方法设计的协调建筑物。将两个模型建筑物的地震响应与原型建筑物的地震响应进行比较表明，协调相似方法比传统相似方法具有更高的精度。分别。将两个模型建筑物的地震响应与原型建筑物的地震响应进行比较表明，协调相似方法比传统相似方法具有更高的精度。分别。将两个模型建筑物的地震响应与原型建筑物的地震响应进行比较，结果表明，协调相似方法比传统相似方法具有更高的精度。