학술논문

APPLICATION OF RELATIVE DAMAGE LEVEL ANALYSIS METHOD TO RUBBLE MOUND BREAKWATER COMPOSED OF SEVERAL MATERIALS IN SHALLOW WATER AREA / 浅海域に設置される複数の材料から構成された捨石堤への被災度解析の適用
Document Type
Journal Article
Source
土木学会論文集 / Japanese Journal of JSCE. 2023, 79(18):23-18186
Subject
relative damage level
rubble mound breakwater
several materials
shallow water area
stability number
Language
Japanese
ISSN
2436-6021
Abstract
It is proposed that the rubble mound breakwater (isosceles trapezoid mound), which is a temporary structure constructed on the shoreline in front of the construction yard during the construction of upright coastal dikes, should be an earth retaining work made of vertically stacked basket mats. A new rubble mound breakwater structure that can be installed on the seaward side of the shoreline is also proposed. The L-Type buttresses are embedded in the rubble mound breakwater, and the weight and frictional resistance of the rubble stone stabilizes the structure against sliding and overturning. The structural resistiveness against wave action of sloping breakwaters, which are used as breakwaters in relatively shallow water such as in the surf zone, is examined. Based on these results, as a new attempt, new formulae for calculating the stability number of the materials used in these structures were proposed by evaluating the relative damage level using DEM (Digital Elevation Model) data.

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