Abstract
In recent years, some seashore structures were armored by stones in consideration of coastal landscape. The wave absorbing breakwater was planned at the offshore of the seaside park near the Tokushima airport. Authors proposed to armor the breakwater with peridotite, because the mass of the usual size stones was insufficient for the design conditions. The density of peridotite is 2.9 or more, and the maximum size of peridotite which can be supplied is 20t. It was difficult to estimate the stability of armor material theoretically due to the structural reason of breakwater. So we verified the stability of the armor stone of breakwater by the hydraulic model experiments. Moreover, the construction efficiency of the boulder was superior to that of the usual size stones in the investigation conducted on the spot. The breakwater after completion gives the good landscape which matched surrounding scene.
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