نوع مقاله : یادداشت فنی
نویسندگان
پژوهشگاه بین المللی زلزله شناسی و مهندسی زلزله
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
In\pagebreak[3] this article, the ambient vibration test results of a $\frac{1}{2}$ scaled model of a 4-story steel structure using ten CMG-6TD, three-component seismometers, have been represented. Four different signal processing methods, including: ``McVerry, Four-Spectrum, Peak Picking and Stochastic Subspace Identification'' were used for modal parameter identification. The obtained dynamic parameters by the four mentioned methods were compared with the numerical modeling results and the ability of these methods was discussed. Totally, the damping values evaluated by the Stochastic Subspace Identification and Four-spectrum Methods are more accurate. Besides, the first 4 mode shapes of the model were identified more accurately by Four-Spectrum and McVerry methods. In order to generalize the results to other structures, complementary studies on both in-situ dynamic tests and numerical modeling are needed.
کلیدواژهها [English]
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