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논문 기본 정보

자료유형
학술저널
저자정보
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)
저널정보
테크노프레스 Coupled systems mechanics Coupled systems mechanics 제2권 제1호
발행연도
2013.1
수록면
85 - 110 (26page)

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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.

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