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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Steel and Composite Structures, An International Journal Steel and Composite Structures, An International Journal Vol.25 No.2
- 발행연도
- 2017.1
- 수록면
- 231 - 244 (14page)
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This paper presents the structural identification of an arch dam model for the damaged, repaired and strengthened conditions under different water levels. For this aim, an arch dam-reservoir-foundation model has been constructed. Ambient vibration tests have been performed on the damaged, repaired and strengthened dam models for the empty reservoir (0 cm), 10 cm, 20 cm, 30 cm, 40 cm, 50 cm and full reservoir (60 cm) water levels to illustrate the effects of water levels on the dynamics characteristics. Enhanced Frequency Domain Decomposition Method in the frequency domain has been used to extract the dynamic characteristics. The dynamic characteristics obtained from the damaged, repaired and strengthened dam models show that the natural frequencies and damping ratios are considerably affected from the varying water level. The maximum differences between the frequencies for the empty and full reservoir are obtained as 16%, 33%, and 25% for damaged, repaired and strengthened model respectively. Mode shapes obtained from the all models are not affected by the increasing water level. Also, after the repairing and strengthening implementations, the natural frequencies of the arch dam model increase significantly. After strengthening, between 46-92% and 43-62% recovery in the frequencies are calculated for empty and full reservoir respectively. Apparently, after strengthening implementation, the mode shapes obtained are more acceptable and distinctive compared to those for the damaged model.
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참고문헌 (41)
참고문헌 신청
Akköse, M. / 2008 / Reservoir water level effects on nonlinear dynamic response of arch dams / J. Fluids Struct 24(3):418~435
Alves, S. W. / 2006 / System identification of a concrete arch dam and calibration of its finite element model / Earthq. Eng. Struct. Dyn 35(11):1321~1337
Arch Dams / 1968 / A review of British research and development / Proceedings of the Symposium Held at the Institution of Civil Engineers
Bayraktar, A. / 2011 / Finite element model updating effects on nonlinear seismic response of arch dam-reservoir-foundation systems / Finite Elem. Anal. Des 47(2):85~97
Calayır, Y. / 1996 / Earthquake analysis of gravity dam-reservoir systems using the Eulerian and Lagrangian approaches / Comput. Struct 59(5):877~890
Alves, S. W. / 2006 / System identification of a concrete arch dam and calibration of its finite element model / Earthq. Eng. Struct. Dyn 35(11):1321~1337
Arch Dams / 1968 / A review of British research and development / Proceedings of the Symposium Held at the Institution of Civil Engineers
Bayraktar, A. / 2011 / Finite element model updating effects on nonlinear seismic response of arch dam-reservoir-foundation systems / Finite Elem. Anal. Des 47(2):85~97
Calayır, Y. / 1996 / Earthquake analysis of gravity dam-reservoir systems using the Eulerian and Lagrangian approaches / Comput. Struct 59(5):877~890
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