DOI QR코드

DOI QR Code

가능최대지진(MCE)을 적용한 중력식 콘크리트 댐 내진성능평가 방안 개선

Improvement of Seismic Performance Evaluation Method of Gravity Type Concrete Dam Applying Maximum Credible Earthquake (MCE)

  • 오정근 (국토안전관리원 댐항만실) ;
  • 정영석 (경상국립대학교 토목공학과) ;
  • 권민호 (경상국립대학교 토목공학과)
  • 투고 : 2022.08.29
  • 심사 : 2022.09.29
  • 발행 : 2022.10.30

초록

이 논문의 목적은 MCE를 적용한 콘크리트 중력식 댐의 동적소성해석에 의한 내진성능평가 수행 시 입력변수, 성능수준 평가 방법에 대한 현행 기준의 적용성을 검토하고 개선안을 제시하는 것이다. 이를 위하여 국내 콘크리트 중력식 댐을 대상 시설로 선정하여 다양한 조건으로 동적소성해석을 수행하였으며 입력변수인 콘크리트 인장강도, 파괴에너지 등에 대한 적용성을 검토하였다. 중력식 댐체 저면의 균열이 활동의 안정성 미치는 영향을 분석하여 저수기능 확보에 필요한 성능수준 평가 방법의 개선안을 도출하였다. 연구 결과 개선사항을 적용할 경우 MCE를 적용한 현행 내진성능평가 방법보다 합리적인 평가결과를 도출하는 효과가 있을 것이다.

The purpose of this paper is to review the applicability of the current standards for the evaluation method of input variables and performance level in seismic performance evaluation by dynamic plastic analysis of the concrete gravity-type dam to which MCE is applied, and to suggest improvements. To this end, a domestic concrete gravity-type dam was selected as a target facility, dynamic plasticity analysis was performed under various conditions, and applicability to input variables such as concrete tensile strength and breaking energy, was reviewed. By analyzing the effect of cracks at the bottom of the gravity dam on the stability of the activity, an improvement plan for the performance level evaluation method required to secure the water storage function was derived. If the proposed improvement plan is applied, it will have the effect of deriving more reasonable evaluation results than the current seismic performance evaluation method to which MCE is applied.

키워드

과제정보

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

참고문헌

  1. Ministry of Land, Infrastructure and Transport, Dam seismic design, 54 17 : 2019.
  2. Ministry of Land, Infrastructure and Transport, Korea Intrastructure Safety & Technology Corporation. (2019), Seismic performance evaluation and improvement tips for existing facilities (Dam).
  3. FEMA, Federal Guidelines for Dam Safety, Earthquake Analyses and Design of Dams, May 2005.
  4. Lee, J. H. (2005), Earthquake Analysis of Concrete Gravity Dams Considering Inelastic Damage of Dam-foundation Boundary, Journal of the Korean Society of Safety, 20(3), 174-179.
  5. Report of the evaluation review committee on the seismic performance of the civil society dam, 2017 Japan.
  6. A Study on the Advanced Seismic Evaluation of Existing Dams (III) KOREA 2014, WATER RESOURCES CORPORATION SASEED.
  7. U.S. Army Corps, Earthquake Design and Evaluation of Concrete Hydraulic Structures, May 2007.
  8. Dam Design Criteria. Commentary. 2011, Korea Water Resources Association.
  9. Special seismic performance verification service for hydro pumping dams, 2019.12, KHNP.
  10. Seismic performance evaluation of dams for large-scale earthquakes (plan), East interpretation (March 2017), Ministry of Land, Infrastructure and Transport.
  11. Yang, I. H., Yoo, S. W., and Seo, J. I. (2009), An Experimental Study on Flexural Tensile Strength and Bond Strength Between Concrete- to-Concrete, Journal of the Society for Structural Diagnosis, 13(3), 155-163.
  12. Kim, J. S. (2017), Suspension Bridge Tunnel Type Anchorage Construction Example, Korea Association of Construction Engineering & Management News, 65.
  13. Jonas Magnusson. (2014), Mechanical properties of rock-concrete interface, Mathias Flansbjer, SP Technical Research Institute of Sweden.
  14. Ministry of Land, Transport Affairs, Structure foundation design standard. Commentary, 2016 Chapter 6 Retaining Walls.
  15. Ministry of Land, Transport and Maritime Affairs. (2018), Seismic design general.
  16. Kim, D. K. (2013), Structural dynamics, Gumi Library
  17. ProShake Ground Response Analysis Program Version 2.0 User's Manual.
  18. UNITED STATES DEPARTMENT OF THE INTERIOR BUREAU OF RECLAMATION, DESIGN OFGRAVITY DAMS, A Water Resources Technical Publication, Denver, Colorado 1976
  19. Cho, S. J., Shin, S. W., Sim, S. H., and Lim, J. Y. (2016), Failure Probability Assessment for Risk Analysis of Concrete Gravity Dam under Flood, Journal of the Korean Society of Safety, 31(6), 58-66. https://doi.org/10.14346/JKOSOS.2016.31.6.58
  20. ABAQUS, Dassault System Simulia Corp. (2011), Abaqus Analysis User's Manual. Version 6.10, 2011.