Application of thermodynamics-based rate-dependent constitutive models of concrete in the seismic analysis of concrete dams
This paper discusses the seismic analysis of concrete dams with consideration of material nonlinearity. Based on a consistent rate-dependent model and two thermodynamics-based models, two thermodynamics-based rate-dependent constitutive models were developed with consideration of the influence of th...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2008-09-01
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| Series: | Water Science and Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674237015300272 |
| _version_ | 1818512987082719232 |
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| author | Leng Fei Lin Gao |
| author_facet | Leng Fei Lin Gao |
| author_sort | Leng Fei |
| collection | DOAJ |
| description | This paper discusses the seismic analysis of concrete dams with consideration of material nonlinearity. Based on a consistent rate-dependent model and two thermodynamics-based models, two thermodynamics-based rate-dependent constitutive models were developed with consideration of the influence of the strain rate. They can describe the dynamic behavior of concrete and be applied to nonlinear seismic analysis of concrete dams taking into account the rate sensitivity of concrete. With the two models, a nonlinear analysis of the seismic response of the Koyna Gravity Dam and the Dagangshan Arch Dam was conducted. The results were compared with those of a linear elastic model and two rate-independent thermodynamics-based constitutive models, and the influences of constitutive models and strain rate on the seismic response of concrete dams were discussed. It can be concluded from the analysis that, during seismic response, the tensile stress is the control stress in the design and seismic safety evaluation of concrete dams. In different models, the plastic strain and plastic strain rate of concrete dams show a similar distribution. When the influence of the strain rate is considered, the maximum plastic strain and plastic strain rate decrease. |
| first_indexed | 2024-12-10T23:54:41Z |
| format | Article |
| id | doaj.art-0ddc43fe59eb4a37b5da3e7ac37bab16 |
| institution | Directory Open Access Journal |
| issn | 1674-2370 |
| language | English |
| last_indexed | 2024-12-10T23:54:41Z |
| publishDate | 2008-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Water Science and Engineering |
| spelling | doaj.art-0ddc43fe59eb4a37b5da3e7ac37bab162022-12-22T01:28:37ZengElsevierWater Science and Engineering1674-23702008-09-0113546410.3882/j.issn.1674-2370.2008.03.006Application of thermodynamics-based rate-dependent constitutive models of concrete in the seismic analysis of concrete damsLeng Fei0Lin Gao1Earthquake Engineering Research Division, Dalian University of Technology, Dalian 116024, P. R. ChinaEarthquake Engineering Research Division, Dalian University of Technology, Dalian 116024, P. R. ChinaThis paper discusses the seismic analysis of concrete dams with consideration of material nonlinearity. Based on a consistent rate-dependent model and two thermodynamics-based models, two thermodynamics-based rate-dependent constitutive models were developed with consideration of the influence of the strain rate. They can describe the dynamic behavior of concrete and be applied to nonlinear seismic analysis of concrete dams taking into account the rate sensitivity of concrete. With the two models, a nonlinear analysis of the seismic response of the Koyna Gravity Dam and the Dagangshan Arch Dam was conducted. The results were compared with those of a linear elastic model and two rate-independent thermodynamics-based constitutive models, and the influences of constitutive models and strain rate on the seismic response of concrete dams were discussed. It can be concluded from the analysis that, during seismic response, the tensile stress is the control stress in the design and seismic safety evaluation of concrete dams. In different models, the plastic strain and plastic strain rate of concrete dams show a similar distribution. When the influence of the strain rate is considered, the maximum plastic strain and plastic strain rate decrease.http://www.sciencedirect.com/science/article/pii/S1674237015300272concreteconstitutive modelrate dependencyconcrete damnonlinearityseismic analysis |
| spellingShingle | Leng Fei Lin Gao Application of thermodynamics-based rate-dependent constitutive models of concrete in the seismic analysis of concrete dams Water Science and Engineering concrete constitutive model rate dependency concrete dam nonlinearity seismic analysis |
| title | Application of thermodynamics-based rate-dependent constitutive models of concrete in the seismic analysis of concrete dams |
| title_full | Application of thermodynamics-based rate-dependent constitutive models of concrete in the seismic analysis of concrete dams |
| title_fullStr | Application of thermodynamics-based rate-dependent constitutive models of concrete in the seismic analysis of concrete dams |
| title_full_unstemmed | Application of thermodynamics-based rate-dependent constitutive models of concrete in the seismic analysis of concrete dams |
| title_short | Application of thermodynamics-based rate-dependent constitutive models of concrete in the seismic analysis of concrete dams |
| title_sort | application of thermodynamics based rate dependent constitutive models of concrete in the seismic analysis of concrete dams |
| topic | concrete constitutive model rate dependency concrete dam nonlinearity seismic analysis |
| url | http://www.sciencedirect.com/science/article/pii/S1674237015300272 |
| work_keys_str_mv | AT lengfei applicationofthermodynamicsbasedratedependentconstitutivemodelsofconcreteintheseismicanalysisofconcretedams AT lingao applicationofthermodynamicsbasedratedependentconstitutivemodelsofconcreteintheseismicanalysisofconcretedams |