Behavior of a Moveable Barrier on Revetment for Mitigation of Disaster by Wave Overtopping

Abstract

Recently, a port city has been gradually expanding near coastal area, and many facilities for tourism and waterfront have been constructed near the shore. When storm surge developed by typhoon have occurred, coastal facilities have a lot of damage and failure with loss of life caused directly by the waves. Various barriers have been suggested to protect property and human life from disasters, they have not been widely applied though. Because they do not satisfy the recent trends that emphasize the surrounding scenery. In this study, a moveable barrier on revetment is proposed against wave overtopping. This moveable barrier has two function, sightseeing and protecting. In case of usual day, it is installed on the revetment and used observatory deck for sightseeing. When wave overtopping has occurred by storm surge, it protect coastal area through changing of flat deck to triangular barrier. The hydraulic and the structural performance of the newly proposed movable barrier was investigated through numerical analysis using commercial program. As a results, this structure has numerically good performance, and follow-up research is required through experimental tests though.

A Hydraulic Experimental Study of a Movable Barrier on a Revetment to Block Wave Overtopping

“…Recently, a movable barrier type was proposed, such as a flap type that could be installed on the revetment, as shown in Figure 1 [10]. This barrier is usually used as a tourist deck but stands up to prevent wave overtopping when a storm surge occurs.…”

“…In this study, a movable barrier is considered on the revetment of Haeundae Marine City in Busan, Republic of Korea. The design of the movable barrier is carried out for the target site, unlike the developed movable barrier [10]. However, the operation method and the purpose are the same as those of the developed movable barrier, as shown in Figure 1.…”