Smart Structures and Systems

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Finite element model updating of Canton Tower using regularization technique

  • Truong, Thanh Chung (Department of Civil and Environmental Engineering, KAIST) ;
  • Cho, Soojin (Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign) ;
  • Yun, Chung Bang (School of Urban and Environmental Engineering, UNIST) ;
  • Sohn, Hoon (Department of Civil and Environmental Engineering, KAIST)
  • Received : 2011.12.04
  • Accepted : 2012.06.18
  • Published : 2012.10.25
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Abstract

This paper summarizes a study for the modal analysis and model updating conducted using the monitoring data obtained from the Canton Tower of 610 m tall, which was established as an international benchmark problem by the Hong Kong Polytechnic University. Modal properties of the tower were successfully identified using frequency domain decomposition and stochastic subspace identification methods. Finite element model updating using the measurement data was further performed to reduce the modal property differences between the measurements and those of the finite element model. Over-fitting during the model updating was avoided by using an optimization scheme with a regularization term.

Keywords

Acknowledgement

Supported by : National Research Foundation (NRF)

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