Effects of Base and Lift Joints on the Dynamic Response of Concrete Gravity Dams to Pulse-Like Excitations |
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| Authors: | Yadollah Yazdani Mohammad Alembagheri |
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| Institution: | 1. Department of Civil and Environmental Engineering, Amirkabir University of Technology, Tehran, Iranalembagheri@modares.ac.ir;3. Department of Civil and Environmental Engineering, Tarbiat Modares University, Tehran, Iran |
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| Abstract: | Near-fault earthquakes with forward-directivity effects produce pulse-like excitations. This article studies the dynamic response of monolithic and cracked sections of gravity dam under symmetric and anti-symmetric pulse-like excitations. The pulses are generated by the modified Gabor Wavelet transform. Two main characteristics of the pulses are pulse period and amplitude. The prescribed cracks are located along the base and two distinct lift joints through the dam body. The dam is modeled along with its reservoir using finite element method. The effects of base and lift joints, pulses shape, period, and amplitude, and reservoir height on the dam dynamic response are studied. |
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| Keywords: | Concrete Gravity Dams Near-Fault Earthquakes Pulse-Like Excitations Dam-Reservoir Interaction Base and Lift Joints |
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