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Influence of Absorptive Reservoir Bottom on the Performance of Dam–Reservoir-Foundation Coupled System


Affiliations
1 Department of Civil Engineering, Jadavpur University, Kolkata 700 032, India
2 Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721 302, India
 

In this article we present the performance of concrete gravity with absorptive reservoir bottom and soil–structure–fluid interaction. A two-dimensional direct coupling methodology is presented to evaluate the performances of dam–reservoir-foundation coupled system. A reflection coefficient is introduced to simulate the reservoir bottom absorption. The fundamental frequency of reservoir has a decreasing trend with increase of reflection coefficient and the responses of individual sub-systems with different reservoir bottom depend on exciting frequency. However, this effect decreases continuously with fluid–structure and soil–structure-fluid interaction.

Keywords

Absorptive Reservoir Bottom, Added Response, Coupled Systems, Free Field Response, Reflection Coefficient.
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  • Influence of Absorptive Reservoir Bottom on the Performance of Dam–Reservoir-Foundation Coupled System

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Authors

Kalyan Kumar Mandal
Department of Civil Engineering, Jadavpur University, Kolkata 700 032, India
Damodar Maity
Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721 302, India

Abstract


In this article we present the performance of concrete gravity with absorptive reservoir bottom and soil–structure–fluid interaction. A two-dimensional direct coupling methodology is presented to evaluate the performances of dam–reservoir-foundation coupled system. A reflection coefficient is introduced to simulate the reservoir bottom absorption. The fundamental frequency of reservoir has a decreasing trend with increase of reflection coefficient and the responses of individual sub-systems with different reservoir bottom depend on exciting frequency. However, this effect decreases continuously with fluid–structure and soil–structure-fluid interaction.

Keywords


Absorptive Reservoir Bottom, Added Response, Coupled Systems, Free Field Response, Reflection Coefficient.

References





DOI: https://doi.org/10.18520/cs%2Fv114%2Fi11%2F2292-2301