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Modal Parameter Estimation of a Building Structure Using a Virtual 1-DOF Mass Tuner in Frequency Domain
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 Title & Authors
Modal Parameter Estimation of a Building Structure Using a Virtual 1-DOF Mass Tuner in Frequency Domain
Hwang, Jae-Seung;
 
 Abstract
The aim of this study is to propose a new output-only system identification technique using a virtual 1-DOF mass tuner(VMT) which is analogous to the tuned mass damper and has a characteristics to amplify the response of the measured acceleration responses of building structure. The VMT is a kind of modal filter that its response is maximized in the range of the natural frequency of a structure, and damping ratio of the structure can be identified using the response ratio of VMT at the different damping ratios consisting the VMT. Also, it is shown that the modal parameters can be precisely estimated if the VMT were applied to the mode response separated with mode decomposition method in the state space. For the verification of the proposed technique, the identification process is applied to the measured acceleration responses from 40 story steel frame structure when typhoon approached to the building. From the numerical simulation, it is found that the modal responses are well separated in the state space, the modal parameters are precisely identified with the proposed modal property estimation method.
 Keywords
Virtual 1-DOF Mass Tuner;Tuned mass damper;Estimation of Modal Parameters;Output-only system Identification;Mode decomposition;
 Language
Korean
 Cited by
1.
가상 질량 동조기에 의한 구조물의 감쇠비 추정,황재승;

한국풍공학회지, 2016. vol.20. 1, pp.65-70
2.
콘크리트 슬래브 진동모드의 중량충격음 참여특성,황재승;이강석;이태진;박희준;박세훈;

대한건축학회연합논문집, 2016. vol.18. 6, pp.127-134
3.
진동수 응답함수를 이용한 구조물의 동적해석모델 식별,이성경;

대한건축학회연합논문집, 2016. vol.18. 5, pp.133-139
4.
가상 진동기에 의한 구조물의 감쇠비 추정,이경훈;황재승;이강석;

대한건축학회연합논문집, 2016. vol.18. 5, pp.141-148
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