Slit Caisson Research Articles

An Example of a Plan for a Multi-Use Breakwater in the Bay Waters(Wide-area Breakwater at Mitsushima Port)

A wide areas breakwater, to oversee a spacious area inclusive of several f ishingports, will be constructed to secure “ calm”. Furthermore, the breakwater will duplicate as a farming zone to promote “fish farming industry” in the waters. Therefore, in this survey, plans and basic designs have been devised for a breakwater that can secure a “calm water area” for the safety of fishing vessels and retain “certain water quality” for its function as a fish farming zone, with the “slit caisson type” finally being proposed for the breakwater structure.

An Experiment on Curved Double Slit Caisson

A curved double slit caisson breakwater is a kind of perforated-wall caisson withan arc-shaped slit wall. The caisson is very stable against storm waves and can dissipate large amout of wave energy.However, impulsive wave forces act on the arc-shaped slit wall with a rear chamber.Curved double slit caisson is invented to improve the curved slit breakwater. The curved double slit caisson has the second vertical slit wall with a rear wave chamber. The curved double slit caisson can reduce the impulsive force greatly and can dissipate wave energy with a relatively small wave chamber.