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붕괴방지수준(CLE)을 적용한 콘크리트 댐 피어부 내진성능평가 방안 개선

Improvement of Seismic Performance Evaluation Method for Concrete Dam Piers by Applying Collapse-Level Earthquake(CLE)

  • 오정근 (국토안전관리원 기반시설안전실) ;
  • 정영석 (텍사스 주립대학교 알링턴 캠퍼스 ) ;
  • 권민호 (경상국립대학교 토목공학과 )
  • 투고 : 2023.09.14
  • 심사 : 2023.11.16
  • 발행 : 2024.02.28

초록

이 논문의 목적은 붕괴방지수준의 지진력을 적용한 콘크리트 댐 피어부 동적해석 시 합리적인 댐 축방향 지진하중 재하 방법, 내하력 평가 방법 등에 대한 적용방안을 제시하는 것이다. 이를 위하여 콘크리트 댐 피어부를 대상 시설로 선정하여 다양한 위어부 폭을 적용한 동적해석을 통해 위어부 댐 축방향 동적거동 특성을 분석하고 'U.S. Army Corps, 2007'제시하는 RC수력구조물 평가기법을 적용하여 내하력 평가를 수행하였다. 연구결과 피어부 댐 축방향 지진력 적용 시 위어부 댐 축방향은 강체거동으로 가정하는 것이 보다 현실적이고 'U.S. Army Corps, 2007'에서 제시하는 모멘트와 전단에 대한 내하력 검토방법이 합리적인 것으로 판단되므로 현행 평가방법의 개선이 필요한 것으로 결과가 도출되었다. 연구 결과 개선사항을 적용할 경우 CLE를 적용한 현행 내진성능평가 방법보다 합리적인 평가결과를 도출하는 효과가 있을 것이다. 피어부에 발생하는 비틀림 모멘트에 대해서는 향후 추가적인 연구가 필요한 것으로 판단된다.

The purpose of this paper is to suggest a method for applying a reasonable dam axial seismic load loading method and load-bearing capacity evaluation method in the dynamic analysis of the pier part of a concrete dam to which the seismic force of the collapse prevention level is applied. To this end, the pier part of a concrete dam was selected as a target facility, and the characteristics of the dynamic behavior in the axial direction of the weir dam were analyzed through dynamic analysis applying various weir widths, and 'U.S. The load-bearing capacity evaluation was performed by applying the RC hydraulic structure evaluation technique suggested by the Army Corps, 2007'. As a result of the study, when applying seismic force in the axial direction of the pier part, it is more realistic to assume that the axial direction of the weir part dam behaves as a rigid body and 'U.S. Army Corps, 2007' suggested that the method of reviewing the load-bearing capacity for moment and shear was considered reasonable, so it was concluded that improvement of the current evaluation method was necessary. If the improvement of the research result is applied, it will have the effect of deriving more reasonable evaluation results than the current seismic performance evaluation method using CLE. It is judged that additional research is needed in the future on the torsional moment occurring in the pier part.

키워드

과제정보

이 성과는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(No. NRF-2019R1A2C1003007).

참고문헌

  1. Ministry of Land, Infrastructure and Transport (2019), Dam seismic design (KDS 54 17), Available at: https://www.kcsc.re.kr/Home/Index 
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  3. Ministry of Land, Transport and Maritime Affairs (2018), Seismic design general (KDS 17 10 00), Available at: https://www.kcsc.re.kr/Home/Index 
  4. U.S. Army Corps Of Enineers (2007), Earthquake Design and Evaluation of Concrete Hydraulic Structures (EM 1110-2-6053). Available at: https://www.publications.usace.army.mil/Portals/76/Publications/EngineerManuals/EM_1110-2-6053.pdf 
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  6. Ministry of Land, Transport and Maritime Affairs (2022), Concrete Structure Design Criteria KDS 14 20 00), Available at: https://www.kcsc.re.kr/Home/Index 
  7. Ministry of Land, Infrastructure and Transport, Korea Intrastructure Safety & Technology Corporation (2011), Guidelines for Seismic Performance Evaluation of Existing Facilities (Bridges), Available at: http://www.kalis.or.kr