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Minimum Lifetime Cost Design of Coastal Structures?A Proposal of Design Method for Rubble Sloping Breakwaters

by Ryoichi Kashima, Central Research Inst of Electric, Power Industry, Japan,
Atsuyuki Shimada, Central Research Inst of Electric, Power Industry, Japan,
Masaaki Yamamoto, Central Research Inst of Electric, Power Industry, Japan,
Kazuo Okutsu, Central Research Inst of Electric, Power Industry, Japan,
Shoji Imaizumi, Central Research Inst of Electric, Power Industry, Japan,
Hitoshi Fujibayashi, Central Research Inst of Electric, Power Industry, Japan,



Document Type: Proceeding Paper

Part of: Structural Safety and Reliability

Abstract:

The authors propose herein a rational design method for coastal structures with consideration for their repairs. The special characteristics of the proposal are that a certain extent of damage and its repairs are inevitable against high waves greater than certain wave height, and that the structures are able to maintain the minimum required function against the maximum probable tidal wave. The proposed method is applied to a rubble sloping breakwater to demonstrate that the method gives more economical design with sufficient safety than the conventional method.

Subject Headings: Benefit cost ratios | Rehabilitation | Hydraulic design | Coastal protection structures | Breakwaters | Structural design | Water waves

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