CAJ | 학술논문

以某粮库立筒仓结构单仓模型为研究对象，进行了环境激励测试方案和模态参数识别研究。结合单仓自身的结构特点，提出了切实可行的测点布置方案和分批测试方案。通过对测试数据进行预处理分析，消除了原始信号的趋势项，保留了所感兴趣的频率信号。利用时域模态参数识别方法识别得到了单仓有效的频率、阻尼比和振型，并与传统峰值拾取法识别结果进行了对比分析，实现了互补和验证。单仓研究结果可用于指导在役立筒仓结构的环境激励测试和模态参数识别研究。
이모량고립통창결구단창모형위연구대상，진행료배경격려측시방안화모태삼수식별연구。결합단창자신적결구특점，제출료절실가행적측점포치방안화분비측시방안。통과대측시수거진행예처리분석，소제료원시신호적추세항，보류료소감흥취적빈솔신호。이용시역모태삼수식별방법식별득도료단창유효적빈솔、조니비화진형，병여전통봉치습취법식별결과진행료대비분석，실현료호보화험증。단창연구결과가용우지도재역립통창결구적배경격려측시화모태삼수식별연구。
A single grain silo model was taken for the study on test plans to ambient excitation test and modal parameters identification.Combined with the characteristics of the single silo,the practical measuring-points arrangement and batch testing program were proposed.Through the preprocessing analysis of the test data,the original signal trend item was eliminated,and the frequency signal of interest was retained.Then,the time-domain modal parameters identification method was used to identify the frequency,damping ratio and vibration mode shapes,meanwhile the traditional peak picking method was employed to obtain associated modal parame-ters.The comparison of numerical results of these two methods achieved complementarity and verification.The obtained results can be used to guide the study on ambient excitation tests and modal parameters identifications of silo structures in service.