A Review on Seismic Response of Concrete Arch Dam
Abstract
Abstract - Seismic safety of concrete arch dams are of significant concern as it may exhaust the social and economic wellbeing of humanity. Dam –Foundation and Dam- Reservoir interactions greatly influenced the dynamic behavior of arch dams. Under earthquake excitations, geological features of dam systems behave rigorously. Therefore, the evaluation of concrete arch dam involves the comprehensive inquisition of responses from the far–field and free-field boundaries. Models developed so far with simplified assumptions explicit the need for the identification of factors in the analysis and design of dam structures. Traditional analytical methods result in over-rigid dam structures that can upshot over-estimated stresses and strains. In the earlier researches, the foundation rocks were assumed massless. It easily simplifies the uncertainty in inertia and damping but gives inaccurate solutions. Thus, approximations in the dam-water-foundation system by ignoring the mainframe parameters play a crucial role in analyzing structure. Finite Element Method with relevant factors under consideration brings up the solution with most negligible errors. FE model calibrated with appropriate parameters will predict the exact behavior of dam structures under seismic excitations. This paper presents the review of research conducted on the concrete arch dam focusing on dam-foundation, dam–water interactions, massed and massless foundation, water compressibility, thermal variations, spatial variations in the ground motion, etc.
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References
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