Browse > Article
http://dx.doi.org/10.9765/KSCOE.2011.23.1.118

Experimental Study on Hydraulic Resistance of Sea Ground Considering Tidal Current Flow  

Kim, Young-Sang (Department of Marine and Civil Engineering, Chonnam National University)
Gang, Gyeong-O (Department of Civil and Environmental Engineering, Chonnam National University)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.23, no.1, 2011 , pp. 118-125 More about this Journal
Abstract
Conventional erosion function apparatus (EFA) which has been used to measure the hydraulic resistance of soil was improved to consider direction change of the current flow. Using improved apparatus, hydraulic resistance capacities of the artificially composed clayey soil and sandy soil were compared. Test result shows that scour rates which were measured under the bi-directional flow were much higher than those measured under unidirectional flow for both type soils. Scour rate of sandy soil was higher than that of clayey soil. Velocity averaged scour rate of specimen which was consolidated under the relatively large consolidation pressure is higher than that of specimen which is consolidated under small consolidation pressure, which means scour problem under bidirectional flow may be more serious for the deep seabed ground.
Keywords
Soft seabed ground; tidal flow; bi-directional current flow; hydraulic resistance;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 황규남, 소상돈 (2002). 환형수조를 이용한 미세-점착성 퇴적물의 침식특성 조사. 한국수자원학회 논문집, 20(2-B), 1075-286.
2 Breusers, H. N. C., Niccollet, G. and Shen, H. W. (1977). Local scour around offshore cylindrical pier. Journal of Hydraulic Research, 15(3), 211-215.   DOI   ScienceOn
3 Briaud, J. L., Ting, F., Chen, H. C., Cao, Y., Han, S. W. and Kwak, K. S. (2001). Erosion Function Apparatus for Scour Rate Predictions. Journal of Geotechnical and Geoenvironmental Engineering. ASCE, 127(2), 105-113.   DOI   ScienceOn
4 Briaud, J. L., Chen, H. C., Nurtjahyo, P. and Wang, J. (2004). Pier and contraction scour in cohesive soils. NCHRP Rep. NO.516, Transportation Research Board, Washington, D.C.
5 Nakagawa, H. and Suzuki, K. (1976). Local scour around bridge pier in tidal current. Coastal Engineering in Japan,1(19), 89-100
6 김남형, 김영수 (1998). 해양구조물과 기초. 원기술.
7 곽기석, 이주형, 박재현, 정문경, 배규진 (2004). 세립토의 침식 능에 대한 토질정수의 영향. 한국지반공학회 논문집, 20(8), 89-96.
8 김경호, 이호진, 김완식 (2008). 파랑과 정상흐름의 공존역에서 해저관로 주변의 국부세굴. 한국해안해양공학회 논문집, 20(5), 510-521.
9 김규한 (1999). 조류가 탁월한 해역에서의 해상 교량세굴. 관동대학교 산업기술논문집, 1(15).
10 정현철 (2007). 연약한 해저지반의 세굴에 대한 지반공학적 특성. 석사학위논문, 전남대학교.