隅角地形上の防波堤に作用する波力と堤滑動
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概要
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As well as the alignment of breakwaters which contribute to calmness of harbour regions, the plane distribution of total wave pressures to breakwaters is also important in design of reakwaters. In the planning of the New Naha Port, the wave sheltering effects of breakwaters have been studied by the same authors in these four years. Concerning with the plane distributions of total wave pressures to the breakwaters, it is not so easy to estimate the distributions for the particular places, where the breakwaters are to be constructed and have very complicated bottom topography. Therefore, the authors carried out the experimental study on the wave pressures to the breakwaters using the modified models shown in Fig. 3-7, and also conducted experiments on sliding of the breakwaters in two dimensional models. The results obtained from the experimental research are shown as follows; 1) The ware heights in the region where sea bottom elevation is ±0.0cm are very small comparing with the other regions in all cases of these expements. 2) In the cases with the breakwaters, the clapotis are caused and hydraulic phenomena are very complicated in front of the breakwaters. 3) The wave pressures take their maximum values on point B in Fig. 2-1 when the incident wave directions are normal to the breakwaters, and Point C in Fig. 2-1 takes the highest wave pressure when the incident wave directions are 45° to the breakwaters. 4) The areas, influenced by corner-shaped bottom topography in distribution of wave pressures and wave heights, are large in the cases of the incident wave directions of 45° than in the cases of normal to the breakwaters. 5) The relative values of breakwater sliding S/L become smaller as the relative weights of breakwaters, μW/ F, become large.
- 琉球大学理工学部の論文
- 1977-09-30
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