지진진동수에 따른 콘크리트 중력댐의 내진성능에 대한 해석적 사례연구

• Published in: 한국안전학회지 Vol. 31; no. 4; pp. 64 - 74
• Main Authors: 채영석, 민인기, Chai, Young-Suk, Min, In-Ki
• Format: Journal Article
• Language: Korean
• Published: 한국안전학회 01.08.2016
• Subjects: 안전공학; earthquake stability; quasi static; gravity dam; seismic coefficient method
• ISSN: 1738-3803; 2383-9953

Recently, the seismic stability evaluation of concrete gravity dams is raised due to the failure of dams occurred by the Izmit, Turkey and JiJi, Taiwan earthquake in 1999. Dams failure may incur loss of life and properties around the dam as well as damage to dam structure itself. Recently, there has been growing much concerns about "earthquake - resistance" or "seismic safety" of existing concrete gravity dams designed before current seismic design provisions were implemented. This research develops three evaluation levels for seismic stability of concrete gravity dams on the basis of the evaluation method of seismic stability of concrete gravity dams in U.S.A., Japan, Canada, and etc. Level 1 is a preliminary evaluation which is for purpose of screening. Level 2 is a pseudo-static evaluation on the basis of the seismic intensity method. And level 3 is a detail evaluation by the dynamic analysis. Evaluation results on existing concrete gravity dams on operation showed good seismic performance under designed artificial earthquake(KHC earthquake).