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논문 기본 정보

자료유형
학술저널
저자정보
Byuna, Yong-Hoon (School of Civil, Environmental and Architectural Engineering, Korea University) Parkb, Kiwon (School of Civil, Environmental and Architectural Engineering, Korea University) Lee, Jong-Sub (School of Civil, Environmental and Architectural Engineering, Korea University)
저널정보
테크노프레스 Smart structures and systems Smart structures and systems 제16권 제4호
발행연도
2015.1
수록면
667 - 681 (15page)

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The scour induced by strong currents and wave action decreases the embedded length of monopiles and leads to a decrease of their structural stability. The objective of this study is the development and consideration of scour-monitoring techniques for offshore monopile foundations. Tests on physical models are carried out with a model monopile and geo-materials prepared in a cylindrical tank. A strain gauge, two coupled ultrasonic transducers, and ten electrodes are used for monitoring the scour. The natural frequency, ultrasonic reflection images, and electrical resistivity profiles are obtained at various scour depths. The experimental results show that the natural frequency of the model monopile decreases with an increase in the scour depth and that the ultrasonic reflection images clearly detect the scour shape and scour depth. In addition, the electrical resistivity decreases with an increase in scour depth. This study suggests that natural frequency measurement, ultrasonic reflection imaging, and electrical resistivity profiling may be used as effective tools to monitor the scour around an offshore monopile foundation.

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