DOI QR코드

DOI QR Code

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

월파방지를 위한 호안설치형 가동식 방벽의 거동 분석

  • Seo, Jihye (Coastal Engineering Division, Korea Institute of Ocean Science & Technology) ;
  • Lee, Byung-Wook (Coastal Engineering Division, Korea Institute of Ocean Science & Technology) ;
  • Park, Woo-Sun (Coastal Engineering Division, Korea Institute of Ocean Science & Technology) ;
  • Won, Deokhee (Coastal Engineering Division, Korea Institute of Ocean Science & Technology)
  • 서지혜 (한국해양과학기술원 연안공학연구본부) ;
  • 이병욱 (한국해양과학기술원 연안공학연구본부) ;
  • 박우선 (한국해양과학기술원 연안공학연구본부) ;
  • 원덕희 (한국해양과학기술원 연안공학연구본부)
  • Received : 2017.11.30
  • Accepted : 2018.02.13
  • Published : 2018.02.28

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.

최근 항만도시가 점점 바다 주변으로 확장되고 관광 및 친수를 목적으로 많은 시설물들이 호안 인근에 건설되기 시작하였다. 이로 인해 태풍 및 폭풍 등이 발생하였을 경우 월파에 의하여 건축물 및 인명의 피해가 직접적으로 발생하고 있다. 이러한 재해로서 재산 및 인명을 보호하기 위하여 많은 방벽구조물이 제시되었으나 주변 경관을 보다 중시하는 최근 경향으로 인해 활발히 적용되지 못하고 있다. 본 연구에서는 월파를 방어할 수 있는 호안 설치형 가동식 방벽에 대하여 제시하였다. 이 가동식 방벽은 상시에는 호안에 설치되어 관광형 데크로 활용되다가 이상 시 기립하여 월파를 막는 기능을 가지고 있다. 본 연구에서는 새롭게 제시된 가동식 방벽 기술의 수리성능, 구조성능을 수치해석을 통하여 검토하였으며, 수리 및 구조적인 측면에서 우수한 성능을 가지고 있는 것으로 분석되었으나 모형실험 등을 통한 후속연구가 필요하다.

Keywords

References

  1. Coastal Development Institute of Technology (2001). Research and development of numerical wave channel. Coastal Development of Institute of Technology, CDIT Library, No. 12 (in Japanese).
  2. Coastal Development Institute of Technology (2010). Research and development of numerical wave tank (CADMAS-SURF/3D). Coastal Development of Institute of Technology, CDIT Library, No. 39 (in Japanese).
  3. Dean, R.G. (1965). Stream Function Representation of Nonlinear Ocean Waves. Journal of Geophysical Research, 70(18), 4561-4572. https://doi.org/10.1029/JZ070i018p04561
  4. Engelund, F.A. (1953). On the laminar and turbulent flows of ground water through homogeneous sand. Danish Academy of Technical Sciences.
  5. Hirt, C.W. and Nichols, B.D. (1981). Volume of fluid (VOF) method for the dynamics of free boundaries. Journal of Computational Physics, 39(1), 201-225. https://doi.org/10.1016/0021-9991(81)90145-5
  6. Hoyle, B.S. (1989). The port-City interface: Trends, problems and examples. Geoforum, 20(4), 429-435. https://doi.org/10.1016/0016-7185(89)90026-2
  7. Sakakiyama, T., Abe, N. and Kajima, R. (1990). Analysis of nonlinear wave around permeable structure by porous model. Proceedings of Coastal Engineering, JSCE, 37, 554-558 (in Japanese). https://doi.org/10.2208/proce1989.37.554
  8. Simulia (2013) ABAQUS.
  9. Sha, W.T., Domanus, H.M., Schmitt, R.C., Oras, J.J. and Lin, E.I.H. (1978). COMMIX-1: A three dimensional transient single-phase component computer program for thermal-hydraulic analysis. Argonne National Laboratory, NUREG/CR-0785, ANL-77-96.