【摘要】 介绍常用的相似关系理论,讨论这些理论在评估现存古代木结构建筑的抗震性能而实施的大型缩尺振动台模拟试验中应用的缺陷,指出可以在等效线性化的假设下利用各输入工况前的模型结构自振频率与原型结构自振频率比作为基本参数来确定各工况下其他物理量相似比的解决方法.最后通过北京故宫博物院雨花阁建筑的振动台模型动力试验验证了此方法的可行性.更多还原

【Abstract】 The application of similitude laws had been widely used,but there still existed some challenges in application of similar relations theory to evaluate the seismic performance of the existing wood structure of ancient Chinese architecture by means of large-scale shaking table test.Through introducing the commonly used similar relations theories,we put forward defects of these theories in the shaking table test simulation applications,and proposed a solution which takes the frequency ratio between the model and prototype as the basic parameter to calculate ratios of others in different conditions based on the equivalent linearization assumption.Finally,the feasibilities of those solutions were verified in the shaking table test of the Pavilion of the Rain building in the Palace Museum,and some other conclusions were obtained.更多还原