Analysis on the Stability of Rubble Mound Breakwater and Wave Overtopping Phenome
Kyu-Han Kim1, O-Gi Kwon2, Kyu-Tae Shim3
1Kyu-Han Kim, Department of Civil Engineering, Catholic Kwandong University, Korea.
2O-Gi Kwon, Department of Infra Engineering, Team, SK E&C, Korea.
3Kyu-Tae Shim, Department of Civil Engineering, Catholic Kwandong University, Korea.
Manuscript received on 01 May 2019 | Revised Manuscript received on 15 May 2019 | Manuscript published on 30 May 2019 | PP: 2349-2358 | Volume-8 Issue-7, May 2019 | Retrieval Number: G6386058719/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: This study, by Physical Model Test, has reviewed the displacement of blocks and wave overtopping due to the external force change when constructing breakwater as a counter facility in the area of Nghi Son of Vietnam, where the construction of a Refinery & Petrochemical Complex is planned. The front of the breakwater is coated with two layers of RAKUNA-IV, which is concrete armor unit. 100yr Return Period Tidal Level (C.D+5.45m) and 100yr Return Period Storm Wave (Hm0: 3.7m,Tp: 11.8sec) are set for the design wave condition to take into account the influence of sea-level rise caused by global warming. The test revealed that the stability of the blocks against the occurrence of incident waves is affected by wave run-up at the front of the breakwater, wave overtopping discharge and JET flow between blocks. Also, it found that there was displacement of blocks at the crest and rear slope of the sections without any coping concrete along with local exposures of core stone. Therefore, cap concrete on the breakwater was installed to decrease wave overtopping discharge and overflow velocity, which resulted in the increase of stability of the armor unit, when Damage Parameter of Nod, which is suggested by The Rock Manual 2007 was applied and the value of EurOtop 2007 was employed as Allowable Overtopping Rate.
Keyword: Armor unit, Physical Model Test, Rubble Mound Breakwater, Stability, Wave overtopping
Scope of the Article: Structural Reliability Analysis.