Investigation on the Actual Condition of Reformation to Coast-Preservation Structures

Abstract

The number of reformation to coast-preservation structures is increasing because of improvement of their coastal amenities and retention of adequate safety against natural disasters. The authors have surveyed the actual conditions of reformed coast-preservation structures under the jurisdiction of the Ministry of Transport and a total of 452 examples of reformed facilities has been collected. In this paper, the compiled examples of reformed coast-preservation structures are analyzed and the recent trend of the reformation is examined. The reasons to make reformation and evaluation of remaining capacity of existing structures are also discussed.