하천 만곡부에서의 세굴심 산정식에 관한 연구

• 영문명: A Study on the Scour Depth Equation in Bight River
• 발행기관: 강원대학교 산업기술연구소
• 저자명: 최한규(Choi, Han-Kuy) 박제완(Park, Je-Wan) 박수진(Park, Soo-Jin)
• 간행물 정보: 『산업기술연구』vol.32, 47~56쪽, 전체 10쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2012.09.30

영문 초록

Currently, we only estimate the average flood water level by the cross-sections of the river using one-dimensional numerical analysis when establishing the basic plans. However, the reliability decreases when it comes to the river bend. In river bend, the difference of water-level between the inside and the outside of the river arises by centrifugal force. And it is estimated less than what it could be estimated when establishing the plan with average estimate of flood level. It is apprehended that the exterior of the river will be under-constructed when establishing the scour depth only with the mean depth. In the case of local scour of the abutment, it is difficult to estimate its depth precisely, and it tends to be over-estimated in the case of the empirical formulas. Therefore, the modification considering the deviation of the water depth of the exterior of the river bend is needed. In observing the deviation of each formula in river bend, it is found: Andru’s formula for 58%, followed by the Laursen’s for 26%, and the C.S.U’s for 17% in pier, while it is 44% for Froehlich’s formula in abutment. Under the 500CMS of the flood discharge, the deviation of the scour depth between pier and abutment was about 10 %. However, in further flood discharge, it shows 24∼58% the biggest in deviation of piers. It is concluded that the scour depth estimate should be done with 2-dimensional numerical analysis.

목차

1. 서론

2. 연구 방법

3. 세굴심 산정 및 고찰

4. 결론

키워드

만곡부 하천 교각 국부세굴심 교대 국부세굴심 bight river pier scour depth abutment scour depth