Characteristics of Local scour at Trunk Section of a Ruble Mound Breakwater with Inclined Slope (사석 방파제의 경사각에 따른 선단부에서의 국부세굴 특성)

조갑필; KIM KYOUNG HO (김경호); 오현식

Characteristics of Local scour at Trunk Section of a Ruble Mound Breakwater with Inclined Slope

Crisisonomy
Abbr : KRCEM
2014, 10(12), pp.41-55
Publisher : Crisis and Emergency Management: Theory and Praxis
Research Area : Social Science > Public Policy > Public Policy in general

조갑필 ¹, KIM KYOUNG HO ², 오현식 ²

¹㈜K.C.C.
²충북대학교

Accredited

ABSTRACT

A breakwater is a structure protecting an area from wave action. Scour is one of the failure modes of breakwater. Soundings reveal large potential risks. Scour at rubble mound breakwater is caused by the steady streaming induced by the standing waves. The steady streaming depends on the angle of the breakwater slope, , the incident wave height, H, the incident wave period, the water depth, , the bed roughness characterized by the sand-grain size, , the water density, and the water viscosity, . From dimensional analysis, the scour characteristics for the case of the no-suspension-mode transport can be found to depend on the number, , Shields number, , number. The scour depth in the equilibrium scour phase were analyzed by non-dimensional parameters such these. Especially the scour depth have good correlation with the KC number which includes the Irribaren number

KEYWORDS

ruble-mound breakwater, local scour, KC number, Irribaren number

Citation status

* References for papers published after 2023 are currently being built.

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