Catastrophic Analysis of Nonlinear Response of Arch Dams under the Horizontal Earthquake

Abstract:

Abstract. According to the characteristics of large bending deformation produced in the process of vibration due to big high-thickness ratio of arch dam, the principle of total potential energy with stationary value is employed to establish the nonlinear vibration equation based on cantilever beam model to calculate arch dam. By means of catastrophe theory, the jumping and hysteresis phenomena of the vibration amplitude of the dam are analyzed, and the factors which cause instability and the parameter range of stable region are discussed. The analysis results show that response behaviors of dam are very sensitive to the change of system parameters, but catastrophic behaviors disappear and pseudo-linear characteristics arise when system parameters are selected rationally. The results obtained in the paper are of significant value for understanding the damage mechanism of arch dams subjected to earthquake, as well as guiding the design of arch dams

• Periodical: Advanced Materials Research (Volumes 446-449)
• Pages: 2745-2749
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.446-449.2745
• Online since: January 2012
• Authors: Dun Ben Sun, Qing Wen Ren
• Keywords: Arch Dam, Catastrophic Behavior, Horizontal Seismic Action, Nonlinear Response, Pseudo-Linear

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