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No. 58 (1999/09) >

Title :護岸上を越波する段波の反射率と波力に関する研究 -サーフビートなど長周期波の反射率と波力の算定式-
Title alternative :Forces and Reflections of Long period Waves Overtopping Sea Walls
Authors :仲座, 栄三
津嘉山, 正光
牧野, 敏明
北村, 康司
川満, 章秀
坂本, 哲史
Authors alternative :Nakaza, Eizo
Tsukayama, Seikoh
Makino, Tosiaki
Kitamura, Yasushi
Kawamitu, Akihide
Sakamoto, Tetushi
Issue Date :Sep-1999
Abstract :Sea walls are usually designed only for protection against storm waves, with no account being taken of the effect of long waves, e.g. Tsunamis or Bore-like surf beats. The estimation of the effectiveness of sea walls as protection against long waves is very important in the field of coastal countermeasures, particularly on coral reef coasts, where long waves can cause abnormally high rises in water levels. The establishment of estimation methods for wave forces, i.e. summing up the effect of long and short wave forces, has a special significance for coastal engineers working on reef coasts. There is as yet no formula for the estimation of either the force or reflection of strong non-linear long waves. In this study, we offer empirical calculation formulae for wave forces and wave reflections. The wave force formula has been derived from hydrostatic wave pressure, whilst the wave reflection coefficient was derived from the energy flux conservation rule.
Type Local :紀要論文
ISSN :0389-102X
Publisher :琉球大学工学部
URI :http://hdl.handle.net/20.500.12000/15827
Citation :琉球大学工学部紀要 no.58 p.35 -40
Appears in Collections:No. 58 (1999/09)

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