A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Parameter Study of Joint Opening Effects on Earthquake Response of Arch Dams
Since arch dams are constructed as cantilever monoliths, the joints between the monoliths cannot develop the tensile stresses predicted in a linear analysis. In reality, the contraction joints will open and close during an earthquake, releasing arch tensile stresses and redistributing the internal forces between arch action and cantilever action. The results of a parameter study show that the opening of contraction joints in Morrow Point dam has a significant effect on the displacements and stresses that develop in response to a maximum credible earthquake. A linear analysis of the dam assuming t is a monolithic structure does not provide realistic maximum tensile stresses because the linear model cannot account for the distribution of internal forces between arch action and cantilever action as the contraction joints periodically open and close during the earthquake. On the basis of the study, a model of the dam with one contraction joint at the crown section represents the most important effects of joint opening on the earthquake response to symmetric ground motion components (stream and vertical directions).
Parameter Study of Joint Opening Effects on Earthquake Response of Arch Dams
Since arch dams are constructed as cantilever monoliths, the joints between the monoliths cannot develop the tensile stresses predicted in a linear analysis. In reality, the contraction joints will open and close during an earthquake, releasing arch tensile stresses and redistributing the internal forces between arch action and cantilever action. The results of a parameter study show that the opening of contraction joints in Morrow Point dam has a significant effect on the displacements and stresses that develop in response to a maximum credible earthquake. A linear analysis of the dam assuming t is a monolithic structure does not provide realistic maximum tensile stresses because the linear model cannot account for the distribution of internal forces between arch action and cantilever action as the contraction joints periodically open and close during the earthquake. On the basis of the study, a model of the dam with one contraction joint at the crown section represents the most important effects of joint opening on the earthquake response to symmetric ground motion components (stream and vertical directions).
Parameter Study of Joint Opening Effects on Earthquake Response of Arch Dams
G. L. Fenves (author) / S. Mojtahedi (author) / R. B. Reimer (author)
1992
70 pages
Report
No indication
English
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