Structural Engineering and Mechanics

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Transient response analysis by model order reduction of a Mokpo-Jeju submerged floating tunnel under seismic excitations

  • Han, Jeong Sam (Department of Mechanical Design Engineering, Andong National University) ;
  • Won, Boreum (Coastal Engineering Research Division, Korea Institute of Ocean Science and Technology) ;
  • Park, Woo-Sun (Coastal Engineering Research Division, Korea Institute of Ocean Science and Technology) ;
  • Ko, Jin Hwan (Coastal Engineering Research Division, Korea Institute of Ocean Science and Technology)
  • Received : 2015.07.29
  • Accepted : 2016.01.27
  • Published : 2016.03.10
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Abstract

In this study, a model order reduction technique is applied to solve the transient responses of submerged floating tunnel (SFT) from Mokpo to Jeju under seismic excitations. Because the SFT is a very long structure as well as a transient response analysis requires large amount of computational resources, the model order reduction is mandatory in the design stage of the SFT. Thus, we apply a model order reduction based on Krylov subspace to the simplified finite element model of the SFT. The responses of the reduced order model are compared with those of the full order model and also are verified by referring a previous work. In conclusion, the computational resources are dramatically reduced with an acceptable accuracy by using the model order reduction, which eventually is useful for designing the full-scale model of SFTs.

Keywords

Acknowledgement

Grant : Development of core techniques for the practical use of submerged floating tunnels

Supported by : Korea Institute of Ocean Science and Technology

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