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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.79 No.2
- 발행연도
- 2021.1
- 수록면
- 169 - 198 (30page)
이용수
초록· 키워드
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The purpose of this study is to investigate the size effect, loading rate, and smeared crack models in the nonlinear seismic behavior of concrete arch dams. One of the important parameters in the design of arch concrete dams is the tensile strength of unreinforced mass concrete. Various fracture parameters obtained from experimental results reported for concrete in order to study the size-effect is used in this paper. In the present analysis, the smeared crack method is used in finite element analysis of the Morrow Point arch dam subjected to three components of the TAFT earthquake as a case study. The dependence of fracture, and especially of the size effect, on the loading rate is described. Models incorporating nonlinear analysis in three cases with and without the size effect of dam concrete and fluid-structure interaction are employed to evaluate and compare them. The water is taken as an inviscid, compressible fluid, and the foundation is rigid. From the study, it is concluded that the participation of the size effect leads to higher values of maximum displacements and stresses in benchmark points compared to the model that ignores the size effect. The crack initiation criterion based on the maximum tensile stress according to the size effect of concrete, and also the dynamic loading range should be defined. Results show considering fixed smeared crack models used in the concrete specimen as well as the size effect of concrete materials, will lead to the crack profile is more realistic and will represent near to real behavior of concrete fracture. The results are of significant interest for the concrete fracture of dams; hence the loading rate should be adopted for fracture properties obtained in dams.
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참고문헌 (61)
참고문헌 신청
1997 / ACI 446, Finite Element Analysis of Fracture in Concrete Structures: State-of-the-Art (ACI 446.3R-97) / American Concrete Institute
Alam, S. Y. / 2020 / A new way to analyse the size effect in quasi-brittle materials by scaling the heterogeneity size / Eng. Fract. Mech 225:106864
Alembagheri, M. / 2013 / Damage assessment of a concrete arch dam through nonlinear incremental dynamic analysis / Soil Dyn. Earthq. Eng 44:127~137
Alembagheri, M. / 2015 / Seismic performance evaluation of a jointed arch dam / Struct. Infrastruct. Eng 12:256~274
Alijani-Ardeshir, M. / 2019 / Comparative study of various smeared crack models for concrete dams / Gradevinar 71(4):305~318
Alam, S. Y. / 2020 / A new way to analyse the size effect in quasi-brittle materials by scaling the heterogeneity size / Eng. Fract. Mech 225:106864
Alembagheri, M. / 2013 / Damage assessment of a concrete arch dam through nonlinear incremental dynamic analysis / Soil Dyn. Earthq. Eng 44:127~137
Alembagheri, M. / 2015 / Seismic performance evaluation of a jointed arch dam / Struct. Infrastruct. Eng 12:256~274
Alijani-Ardeshir, M. / 2019 / Comparative study of various smeared crack models for concrete dams / Gradevinar 71(4):305~318
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