Infrastructures, Volume 10, Issue 8
2025 August - 31 articles
Cover Story: This paper presents a formulation for the dynamic analysis of dam–reservoir–foundation systems, based on a true coupled approach. A state-space method is used for modal analysis, resulting in non-stationary vibration modes. A time-stepping method is applied for seismic analysis; nonlinear behavior is simulated by combining a constitutive joint model and a concrete damage model with tension and compression damage variables. The case study is the Cahora Bassa arch dam, instrumentalized in 2010 with a continuous dynamic monitoring system. The natural frequencies and mode shapes, obtained from ambient vibrations recorded over the years, are analyzed and compared to numerical results for different reservoir levels. The nonlinear seismic response is simulated to evaluate the structural effects due to vertical joint movements and concrete damage. View this paper - Issues are regarded as officially published after their release is announced to the table of contents alert mailing list .
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