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Dynamic Parameter Estimation of a CANDU Type Containment Using Ambient Vibration Measurements  

Choi, Sanghyun (Department of Railroad Facility Engineering, Korea National University of Transportation)
Park, Sooyong (Department of Architecture and Ocean Space, Korea Maritime University)
Hyun, Chang-Hun (Structural Systems and Site Evaluation Department, Korea Institute of Nuclear Safety)
Kim, Moon-Soo (Structural Systems and Site Evaluation Department, Korea Institute of Nuclear Safety)
Publication Information
Journal of the Society of Disaster Information / v.8, no.2, 2012 , pp. 188-196 More about this Journal
Abstract
Dynamic parameters such as natural frequencies can provide global stiffness information of a structure, and thus be utilized in monitoring structural integrity of large structures such as a containment. To identify the dynamic parameters without interrupting normal operation, a modal analysis method based on ambient vibration measurements should be applied. In this study, dynamic parameters of the containment of Wolsong Unit 2 are identified using ambient vibration measurement data. The feasibility of the study is verified using a numerical model for the containment. From the modal analysis, dynamic parameters of the containment with acceptable correlation to analytical modes can be estimated.
Keywords
dynamic parameter; resonant frequency; Wolsong Unit 2; ambient vibration; containment;
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