Experimental Study on Hydraulic Characteristics of Wave Dissipating Modified- Tribar

J. Ocean Eng. Technol. 2004;18(4):23-32.

KIM IN-CHUL;PARK YOUNG-WOO;KWEON HYUCK-MIN;

Division of Architecture and Civil Engineering, Dongseo University;Pusan New Port Co. Ltd.;Division of Civil and Environmental Engineering, Kyung-Ju University;

Modified- Tribar의 수리특성에 관한 실험적 연구

김인철;박영우;권혁민;

동서대학교 건설공학부;(주) 부산신항만;경주대학교 건설환경시스템공학부;

Keywords: Armor Layer, Modified-Tribar MTB, Tetrapod, Stability Coefficients, Reflection Coefficients, Wave Overtopping Rate

핵심용어: 소파블록, 테트라포드, 안정계수, 반사계수, 월파량

Abstract

Specially shaped concrete blocks are used for the armor layer of rubble structure for breakers, seawalls, or other shore protection work. In this study, the hydraulic characteristics of the Modified-Tribar(MTB), which addresses the shortcomings of the Arch-Tribar, and the most widely used Tetrapod(TTP) in Korea are examined through hydraulic model tests. The MTB are much more stable than the TTP, as shown through the stability model tests under non-breaking and non-overtopping condition. The value of the stability coefficient(KD) was obtained at around 30. The model tests show that the TTP random two layers and MTB uniform 1.5 layers have similar effects, but the MTB one layer shows slightly low effects in dissipating wave energy. The TTP random two layer model is the most effective in reducing wave overtopping rate, under overtopping condition, while the MTB uniform one layer and the MTB uniform 1.5 layer models follow respectively.