海岸保全施設の前面海浜変化に注目した安定性検討

抄録

For the design of beaches and beach nourishment, and coastal structures constructed in a surf zone or near a shoreline, the following knowledge was acquired from analyses of field data.
1) A beach slope required for the calculation of overtopping rate can be obtained with sufficient accuracy using the formula of Dean, Yamamoto et al. or Sunamura. A beach face slope can be obtained with sufficient accuracy using the formula of Yamamoto, Uda or Kriebel. Moreover, a median sediment grain diameter can be found with comparatively good accuracy due to the formula of Yamamoto et al. or Sunamura.
2) A scouring amount required for the foot protection design of the structure in the surf zone can be got with comparatively good accuracy using Yokoyama et al. 's diagram.
3) Sufficient consideration not only for wave pressure and a beach change but also the influence of a flow is required for the stable design of the structure near the shoreline.