Doboku Gakkai Ronbunshu
Online ISSN : 1882-7187
Print ISSN : 0289-7806
ISSN-L : 0289-7806
ESTIMATION OF HYDRODYNAMIC PRESSURE ON OFFSHORE STRUCTURES UNDER PARTIAL REFLECTIVE BOTTOM CONDITION DURING EARTHQUAKES
Satoshi MORITATakayuki NAKAMURA
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2001 Volume 2001 Issue 684 Pages 81-92

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Abstract
A numerical analysis for distribution of hydrodynamic pressure on arbitrary shaped offshore structure vibrating in water at constant depth is developed. The source distribution method is used in the analysis after deriving Green's function for pressure waves in water satisfying boundary conditions on the water surface and bottom. On the bottom, partial reflection of the pressure waves is considered, and the reflection ratio is estimated from physical constants of the bottom material. Pressure distributions and resultant forces on vertical walls and circular cylinders are analyzed. The partial reflection of pressure waves by the bottom materials has an important effect on the distribution of pressure are shown.
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© by Japan Society of Civil Engineers
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