Journal of Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회논문집)

Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회)
권호 표지
DOI QR코드

DOI QR Code

Physical Model Tests for Mean Wave Overtopping Discharge of Rubble-mound Structure Covered by Tetrapods: RC/AC = 1 and cotα = 1.5 Conditions

테트라포드로 피복된 경사식구조물의 평균월파량 산정을 위한 수리모형실험: RC/AC = 1 및 cotα = 1.5 조건

  • Jong-In Lee (Department of Civil Engineering, Chonnam National University) ;
  • Young-Taek Kim (Department of Hydro Science and Engineering Research, Korea Institute of Civil Engineering and Building Technology)
  • 이종인 (전남대학교 공과대학 토목공학과) ;
  • 김영택 (한국건설기술연구원 수자원하천연구본부)
  • Received : 2023.06.15
  • Accepted : 2023.06.26
  • Published : 2023.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

The allowable mean overtopping discharge is used as a design parameter for coastal structures. The crest elevation of coastal structures should ensure the wave overtopping discharge within acceptable limits for structural safety and the safety of pedestrians, vehicles, operations, and so on. In this study, two-dimensional physical model tests on typical rubble-mound structure geometries were performed and the the mean wave overtopping discharges under various water depth and wave conditions were measrued. The various test conditions were applied to the tests with the change of the wave steepness, relative freeboard and relative wave height. An empirical formula from the experimental data was proposed to predict the mean wave overtopping volumes.

해안구조물 설계시 허용평균월파량은 설계요소 중의 하나이며, 구조물의 마루높이는 구조물의 안전, 보행자의 안전 및 운영 등에 요구되는 월파량 이하가 되도록 하여야 한다. 본 연구에서는 경사식구조물의 기하학적 형상을 고려하고, 다양한 수심조건에서 평균월파량 계측을 위한 2차원 수리실험을 수행하였다. 수리실험은 서로 다른 파형경사, 상대여유고, 상대파고 등을 적용하여 수행되었다. 실험결과를 이용하여 경사식구조물의 평균월파량을 산정할 수 있는 경험식을 제안하였다.

Keywords

Acknowledgement

본 연구는 한국에너지기술평가원의 연구비 지원(과제번호: 20224B10200040)을 받아 수행되었으며, 연구비 지원에 감사드립니다.

References

  1. Altomare, C., Suzuki, T., Chen, X., Verwaest, T. and Kortenhaus, A. (2016). Wave overtopping of sea dikes with very shallow foreshores. Coastal Engineering, 116, 236-257. https://doi.org/10.1016/j.coastaleng.2016.07.002
  2. Aminti, P. and Franco, L. (1988). Wave overtopping on rubble mound breakwaters. Proc. of the 21th International Coastal Engineering Conference, ASCE, 1, 770-781.
  3. Bradbury, A.P. and Allsop, N.W. (1988). Hydraulic performance of breakwater crown walls. Report No. SR146, Wallingford, UK.
  4. Kim, Y.T., Choi, H.J. and Lee, H.G. (2022). Hydraulic and numerical tests on wave overtopping for vertical seawall with relatively shallow and steep sloped water depth. Journal of Korean Society of Coastal and Ocean Engineers, 34(6), 258-265 (in Korean). https://doi.org/10.9765/KSCOE.2022.34.6.258
  5. Kim, Y.T. and Lee, J.I. (2012). Wave overtopping formula for vertical structure including effects of wave period: non-breaking conditions. Journal of Korean Society of Coastal and Ocean Engineers, 24(3), 228-234 (in Korean). https://doi.org/10.9765/KSCOE.2012.24.3.228
  6. Kim, Y.T. and Lee, J.I. (2023). Physical model test for wave overtopping for vertical seawall with relatively steep bottom slope for the impulsive wave condition. Journal of Korean Society of Coastal and Ocean Engineers, 35(2), 33-40 (in Korean). https://doi.org/10.9765/KSCOE.2023.35.2.33
  7. Korea Construction Engineering and Transport Developement Collaboratory Management Institute (KOCED) (2019), Wave setting up technique for physical model test of harbor and coastal engineering field, SPS-F KOCED 0004-7382:2019, Available at: www.standard.go.kr (Accessed: March 2, 2020).
  8. Owen, M.W. (1982). The hydraulic design of seawall profiles. Proc. of the Coastal Protection Conference, Institution of Civil Engineers, Thomas Telford Publishing, London, UK, 185-192.
  9. Pedersen, J. (1996). Experimental study of wave forces and wave overtopping on breakwater crown walls. Series Paper 12, Hydraulic and Coastal Engineering Lab., Dept. of Civil Eng., Aalborg Univ., Denmark.
  10. Pedersen, J. and Burcharth, H.F. (1992). Wave forces on crown walls. Proc. of the 23th International Coastal Engineering Conference, ASCE, 2, 1489-1502.
  11. van der Meer, J.W., Allsop, N.W.H., Bruce, T., De Rouck, J., Kortenhaus, A., Pullen, T., Schuttrumpf, H., Troch, P. and Zanuttigh, B. (2018). EurOtop, Manual on wave overtopping of sea defences and related structures. An overtopping manual largely based on European research, but for worldwide application (www.overtopping-manual.com).
  12. van der Meer, J.W. and Bruce, T. (2014). New physical insights and design formulas on wave overtopping at sloping and vertical structures. Journal of Waterway, Port, Coastal, and Ocean Engineering, ASCE, 140(6), 04014025.
  13. van der Meer, J.W. and Janssen, W. (1995). Wave run-up and wave overtopping at dikes. In Wave Forces on Inclined and Verical Wall Structures, ASCE, 1-27.