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A platform for research: civil engineering, architecture and urbanism
Response Spectrum Analysis of Dams Including Dam–Water–Foundation Interaction
Dam‐water‐foundation interaction introduces frequency‐dependent, complex‐valued hydrodynamic and foundation terms in the governing equations. Based on a series of approximations, frequency‐independent values of these terms were defined and an equivalent single‐degree‐of‐freedom system developed in the previous chapters to estimate the fundamental mode response of dams. These concepts lead to the response spectrum analysis (RSA) procedure. Recognizing that the cross‐sectional geometry of concrete gravity dams does not vary widely, standard data for the vibrational properties of dams and for parameters that characterize dam‐water interaction (including reservoir bottom absorption) and dam‐foundation interaction are presented to facilitate implementation of the procedure. To enhance the accuracy of this RSA procedure, the possibility of calculating stresses by finite element analysis versus the traditional beam formulas is explored, and a correction factor for beam stresses on the downstream face of the dam is developed. The chapter ends with a comprehensive evaluation of the accuracy of the RSA procedure.
Response Spectrum Analysis of Dams Including Dam–Water–Foundation Interaction
Dam‐water‐foundation interaction introduces frequency‐dependent, complex‐valued hydrodynamic and foundation terms in the governing equations. Based on a series of approximations, frequency‐independent values of these terms were defined and an equivalent single‐degree‐of‐freedom system developed in the previous chapters to estimate the fundamental mode response of dams. These concepts lead to the response spectrum analysis (RSA) procedure. Recognizing that the cross‐sectional geometry of concrete gravity dams does not vary widely, standard data for the vibrational properties of dams and for parameters that characterize dam‐water interaction (including reservoir bottom absorption) and dam‐foundation interaction are presented to facilitate implementation of the procedure. To enhance the accuracy of this RSA procedure, the possibility of calculating stresses by finite element analysis versus the traditional beam formulas is explored, and a correction factor for beam stresses on the downstream face of the dam is developed. The chapter ends with a comprehensive evaluation of the accuracy of the RSA procedure.
Response Spectrum Analysis of Dams Including Dam–Water–Foundation Interaction
Chopra, Anil K. (author)
2020-02-25
18 pages
Article/Chapter (Book)
Electronic Resource
English