Coupled systems mechanics

  • 제2권1호
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  • Pages.85-110
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  • 2013
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  • 2234-2184(pISSN)
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  • 2234-2192(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Strain-based seismic failure evaluation of coupled dam-reservoir-foundation system

  • Hariri-Ardebili, M.A. (Department of Civil Environmental and Architectural Engineering, University of Colorado at Boulder) ;
  • Mirzabozorg, H. (Department of Civil Engineering, K. N. Toosi University of Technology) ;
  • Ghasemi, A. (Department of Civil Engineering, K. N. Toosi University of Technology)
  • 투고 : 2013.01.27
  • 심사 : 2013.03.10
  • 발행 : 2013.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

Generally, mass concrete structural behavior is governed by the strain components. However, relevant guidelines in dam engineering evaluate the structural behavior of concrete dams using stress-based criteria. In the present study, strain-based criteria are proposed for the first time in a professional manner and their applicability in seismic failure evaluation of an arch dam are investigated. Numerical model of the dam is provided using NSAD-DRI finite element code and the foundation is modeled to be massed using infinite elements at its far-end boundaries. The coupled dam-reservoir-foundation system is solved in Lagrangian-Eulerian domain using Newmark-${\beta}$ time integration method. Seismic performance of the dam is investigated using parameters such as the demand-capacity ratio, the cumulative inelastic duration and the extension of the overstressed/overstrained areas. Real crack profile of the dam based on the damage mechanics approach is compared with those obtained from stress-based and strain-based approaches. It is found that using stress-based criteria leads to conservative results for arch action while seismic safety evaluation using the proposed strain-based criteria leads to conservative cantilever action.

키워드

참고문헌

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피인용 문헌

  1. A smeared crack model for seismic failure analysis of concrete gravity dams considering fracture energy effects vol.48, pp.1, 2013, https://doi.org/10.12989/sem.2013.48.1.017
  2. Impact of load combination on the stability analysis of an arch dam subjected to stochastic non-uniform excitations vol.19, pp.3, 2015, https://doi.org/10.1080/19648189.2014.960097
  3. Quantification of seismic potential failure modes in concrete dams vol.45, pp.6, 2016, https://doi.org/10.1002/eqe.2697
  4. Quantitative failure metric for gravity dams vol.44, pp.3, 2015, https://doi.org/10.1002/eqe.2481
  5. Forced vibration analysis of a dam-reservoir interaction problem in frequency domain vol.3, pp.4, 2014, https://doi.org/10.12989/csm.2014.3.4.385
  6. Free vibration analysis of gravity dam-reservoir system utilizing 21 node-33 Gauss point triangular elements vol.5, pp.1, 2016, https://doi.org/10.12989/csm.2016.5.1.059