규칙파 작용시 경사식구조물의 상치콘크리트에 작용하는 양압력: 여유고와 피복재 높이가 동일한 조건
Uplift Pressures Acting on the Crown Wall of Rubble Mound Structure under Monochromatic Wave Conditions: Case for the Same Level as the Freeboard and Armour Height
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초록
국내에서는 경사식구조물의 상치콘크리트에 작용하는 양압력을 산정하는 지침이 부재함에 따라 Goda의 양압력 산정법을 변형하여 사용하고 있다. 이러한 양압력 산정법은 명확하게 정립된 것이 아니며, 상치콘크리트에 작용하는 양압력을 직접 산정할 수 있는 방안의 도출이 필요한 실정이다. 그러나 양압력의 크기 및 분포에 대한 검토는 제체사석의 투수성 및 균질성 등에 영향을 받기 때문에 상당히 어려운 실정이다. 본 연구에서는 상치콘크리트에작용하는 양압력을 검토하기 위해 규칙파를 적용한 2차원 수리모형실험을 수행한 후, 양압력에 영향을 미치는 주요변수를 검토하였다. 그리고 실험결과를 이용하여 규칙파 조건에서 양압력을 산정할 수 있는 경험식을 도출하였다.
Abstract
In Korea, since there is no guidelines for calculating the uplift pressure acting on the concrete of rubble mound structure, a modified form of Goda’s formula is used. The current design method by Goda’s formula has not been clearly established. Therefore, it is necessary to develop a design guidelines to directly estimating the uplift pressure acting on the crown wall. The magnitude and distribution of the uplift pressure are quite difficult because they are affected by the permeability and homogeneity of the core stones. In this study, a two-dimensional hydraulic model experiment using regular waves was performed to examine the uplift pressure acting on the crown wall, and then the main variables affecting the uplift pressure were examined. Using the experimental results, an empirical formula was derived to calculate the uplift pressure under regular wave conditions.
참고문헌 (11)
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