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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.14 No.6
- 발행연도
- 2020.11
- 수록면
- 959 - 975 (17page)
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초록· 키워드
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This paper proposes an approach to assess and predict the seismic risk of existing concrete gravity dams (CGDs) considering the ageing effect. The combination of fragility function and cumulative absolute velocity (CAV) depending on two failure states has been used in the analysis. It represents the time-variant degradation of the concrete structure and the conditional change of structural vulnerability in the case of the seismic excitation. Therefore, the seismic risk assessment captures here the nonlinear dynamic behavior of a concrete gravity dam through the fragility analysis. Incremental dynamic analysis for the fragility curves is adopted to state the performance of the dam in terms of different intensity measures. To assess the capacity of the aged concrete gravity dam, this research introduces a way to estimate the CAV<SUB>limit</SUB> of CGDs with varying time. For a case study, an existing concrete gravity dam in Korea has been taken into consideration to apply this approach. The numerical finite element model is validated by optimizing the recorded field data. The proposed approach and its findings will be helpful to CGDs operators to ensure whether a dam needs to stop after a specific time using the extracted mathematical model. Furthermore, as this mathematical model is the function of time, the operator can get an idea about dam conditions at any specific time and can take necessary steps.
목차
Abstract
1. Introduction
2. Theoretical Background
3. Case Study of the Proposed Approach
4. Risk Assessment and Analysis of Aged CGD
5. Conclusion
References
참고문헌 (12)
참고문헌 신청
Reed, J. / 1994 / Methodology for developing seismic fragilities epri tr-103959
Sadhukhan, B. / 2016 / Optimisation using central composite design(ccd)and the desirability function for sorption of methylene blue from aqueous solution onto lemna major / Karbala International Journal of Modern Science 2(3):145~155
Sen, U. / 2018 / Risk assessment of concrete gravity dams under earthquake loads
Shah, C. / 2002 / Mesh discretization error and criteria for accuracy of finite element solutions / Ansys users conference
Tekie, P. B. / 2003 / Seismic fragility assessment of concrete gravity dams / Earthquake Engineering and Structural Dynamics 32(14):2221~2240
Sadhukhan, B. / 2016 / Optimisation using central composite design(ccd)and the desirability function for sorption of methylene blue from aqueous solution onto lemna major / Karbala International Journal of Modern Science 2(3):145~155
Sen, U. / 2018 / Risk assessment of concrete gravity dams under earthquake loads
Shah, C. / 2002 / Mesh discretization error and criteria for accuracy of finite element solutions / Ansys users conference
Tekie, P. B. / 2003 / Seismic fragility assessment of concrete gravity dams / Earthquake Engineering and Structural Dynamics 32(14):2221~2240
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