结构模型实验中模态频率的识别及推算
|
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。
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.
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.
引文
1林子臣．底部大空间、少内纵墙高层R／C剪力墙结构体系地震模拟试验研究［学位论文］．清华大学，19902戴施亮．随机振动实验技术．清华大学出版社，19843哈里斯HG．混凝土结构动力模型．地震出版社，1987
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心