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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
On the influence of uplift pressure in concrete gravity dams
Cracks are often present in concrete dams, and may have relevant dimensions. The evaluation of the safety factor of old dams under higher flood levels has been investigated through fracture mechanics in previous years. Crack stability in concrete dams can correctly be predicted when uplift pressures are accurately modelled. Current models consider a uniform uplift pressure distribution, but recent experimental results show that it varies along the crack faces. In the present paper, uplift pressure effects in cracked concrete gravity dams are studied. A parametric study on the influence of uplift pressure on stress intensity factors and crack-propagation angle is performed. Furthermore, uplift pressure effects on the LEFM scale law for the maximum water level carried by cracked gravity dams are examined.
On the influence of uplift pressure in concrete gravity dams
Cracks are often present in concrete dams, and may have relevant dimensions. The evaluation of the safety factor of old dams under higher flood levels has been investigated through fracture mechanics in previous years. Crack stability in concrete dams can correctly be predicted when uplift pressures are accurately modelled. Current models consider a uniform uplift pressure distribution, but recent experimental results show that it varies along the crack faces. In the present paper, uplift pressure effects in cracked concrete gravity dams are studied. A parametric study on the influence of uplift pressure on stress intensity factors and crack-propagation angle is performed. Furthermore, uplift pressure effects on the LEFM scale law for the maximum water level carried by cracked gravity dams are examined.
On the influence of uplift pressure in concrete gravity dams
Plizzari, G.A. (Autor:in)
Engineering Fracture Mechanics ; 59 ; 253-267
1998
15 Seiten, 11 Bilder, 27 Quellen
Aufsatz (Zeitschrift)
Englisch
On the influence of uplift pressure in concrete gravity dams
| British Library Online Contents | 1998
Uplift pressure in gravity dams
| Engineering Index Backfile | 1930
Uplift pressure in gravity dams
| Engineering Index Backfile | 1929
Uplift pressure in gravity dams
| Engineering Index Backfile | 1928
Uplift pressure in gravity dams
| Engineering Index Backfile | 1930