【摘要】 利用实验与分析方法，对Ｒ／Ｃ原型结构进行了模态频率计算，之后对１／１８微粒砼缩比模型未加模拟质量前做了破击试验，据此分析了由计算、敲击结果去推算模型配模拟质量后的频率特性的方法。推算结果和由振动台输入的白噪声所识别的频率值做了对比验证，表明具有较好的准确性且简便易行。更多还原

【Abstract】 The mode frenquency of R/C structures had been calculated by means of experiment and anal-ysis,then beating tests have been conducted on a fine aggregate concrete medel with 1/18 scalewithout sim ulating mass.Based on these,the calculation method of frequency characteristics ofmodels with simulating mass is analyslzed.Calculation result is compared with the test results obtainfrom shaking table tests with white noise artificial wave,and it shows that the calculation result pos-sesses better accuracy convenience and is valuable in practical use.更多还原