Techno Press
Techno Press

Smart Structures and Systems   Volume 12, Number 3, September-October 2013, pages 441-463
Simplified planar model for damage estimation of interlocked caisson system
Thanh-Canh Huynh, So-Young Lee, Jeong-Tae Kim, Woo-Sun Park and Sang-Hun Han

Abstract     [Full Text]
    In this paper, a simplified planar model is developed for damage estimation of interlocked caisson systems. Firstly, a conceptual dynamic model of the interlocked caisson system is designed on the basis of the characteristics of existing harbor caisson structures. A mass-spring-dashpot model allowing only the sway motion is formulated. To represent the condition of interlocking mechanisms, each caisson unit is connected to adjacent ones via springs and dashpots. Secondly, the accuracy of the planar model‟s vibration analysis is numerically evaluated on a 3-D FE model of the interlocked caisson system. Finally, the simplified planar model is employed for damage estimation in the interlocked caisson system. For localizing damaged caissons, a damage detection method based on modal strain energy is formulated for the caisson system.
Key Words
    simplified model; interlocked caissons; modal strain energy; damage detection
Thanh-Canh Huynh, So-Young Lee and Jeong-Tae Kim : Department of Ocean Eng., Pukyong National University, Busan, Korea
Woo-Sun Park and Sang-Hun Han : Coastal Development and Ocean Energy Research Dept., Korea Institute of
Ocean Science and Technology (KIOST), Ansan, Korea

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