【摘要】 以1幢6层钢框架结构为例,分别采用基于环境激励的随机子空间模态识别法(SSI)与频域分解法(FDD)从加速度测试信号中识别其模态参数,识别结果一致.最后选用SSI法对试验的有限元模型进行了仿真分析.研究表明:仿真与测试分析结果吻合较好,具有可靠的精度和一定的适用性.更多还原

【Abstract】 Taking a six-story steel frame as an example,the method of stochastic subspace identification(SSI) is used to identify the modal parameters from the tested acceleration signals,and the correctness is verified by the method of frequency domain decomposition(FDD).Then the simulation analysis of the tested finite element model based on SSI is conducted and the results match well with the tested ones,which indicate that the method of simulation analysis is reliable and applicable.更多还原