Determination of added mass for earthquake induced hydrodynamic loadings on vertical structures
Determination of added mass for earthquake induced hydrodynamic loadings on vertical structures
Earthquakes can induce severe hydrodynamic loadings on dams and their equipment. The dynamic dam-reservoir interaction is usually modelled by the so-called added mass. There are two theoretical approaches in the literature, employing either momentum or compressibility theory. Both assume zero pressures at the top of the structure, leading to comparatively low design pressures for control structures. A new theory was developed for a simple approximation for added mass and hydrodynamic pressures. The added mass is assumed to be uniform over the dam height. The added mass becomes a linear function of acceleration and water depth. Comparison with 'classic' theories showed good agreement for accelerations up to 0.3g, and higher pressures for higher accelerations.
dam-reservoir interaction, simplified theory, added mass
215-231
Muller, Gerald
f1a988fc-3bde-429e-83e2-041e9792bfd9
Kisliakov, Dimitar
872ed209-feae-4a01-b9ed-d51980761579
1 September 2022
Muller, Gerald
f1a988fc-3bde-429e-83e2-041e9792bfd9
Kisliakov, Dimitar
872ed209-feae-4a01-b9ed-d51980761579
Muller, Gerald and Kisliakov, Dimitar
(2022)
Determination of added mass for earthquake induced hydrodynamic loadings on vertical structures.
Journal of Theoretical and Applied Mechanics, Sofia, 52 (3), .
(doi:10.55787/jtams.22.52.3.215).
Abstract
Earthquakes can induce severe hydrodynamic loadings on dams and their equipment. The dynamic dam-reservoir interaction is usually modelled by the so-called added mass. There are two theoretical approaches in the literature, employing either momentum or compressibility theory. Both assume zero pressures at the top of the structure, leading to comparatively low design pressures for control structures. A new theory was developed for a simple approximation for added mass and hydrodynamic pressures. The added mass is assumed to be uniform over the dam height. The added mass becomes a linear function of acceleration and water depth. Comparison with 'classic' theories showed good agreement for accelerations up to 0.3g, and higher pressures for higher accelerations.
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JTAM2022_3_215-231
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Accepted/In Press date: 5 April 2022
Published date: 1 September 2022
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© 2022 Bulgarian Academy of Sciences, National Committee of Theoretical and Applied Mechanics. All rights reserved.
Keywords:
dam-reservoir interaction, simplified theory, added mass
Identifiers
Local EPrints ID: 470770
URI: http://eprints.soton.ac.uk/id/eprint/470770
ISSN: 1314-8710
PURE UUID: 8cb21146-59d0-4e62-8de1-36ec80cd2814
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Date deposited: 19 Oct 2022 17:04
Last modified: 05 Jun 2024 17:26
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Author:
Dimitar Kisliakov
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