Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Use of earthquake-proofing to provide seismic stability of earth dams
Conclusions 1. The placement in a dam of horizontal earthquake-proofing layers of soils whose dynamic moduli of deformation are lower than for the main soils of the structure makes it possible to alter purposefully the dynamic characteristics of the dam (natural frequency and modes of oscillations), to reduce the level of the seismic load on the structure within given limits, and to restrict the distribution of zones of the limit state. 2. The presence of one earthquake-proofing layer directly at the base of the dam or of several layers alternating with the main soil located at a height up to 0.5Hd from the base can reduce the level of the seismic load on the structure by a factor of 1.5–2. 3. By varying the location of the earthquake-proofing layers over the height of the dam it is possible to locally influence a change in the level of the seismic load on the structure and dimensions and location of zones of the limit state. 4. The investigated design measures can effect a savings in certain cases due to using cheaper soils for the earthquake-proofing layers compared to the main soils of the dam, and mainly due to depressing the profile when providing its seismic stability. 5. The investigated designs are sufficiently efficient technologically, and their practical realization is not related to any changes in traditional construction methods.
Use of earthquake-proofing to provide seismic stability of earth dams
Conclusions 1. The placement in a dam of horizontal earthquake-proofing layers of soils whose dynamic moduli of deformation are lower than for the main soils of the structure makes it possible to alter purposefully the dynamic characteristics of the dam (natural frequency and modes of oscillations), to reduce the level of the seismic load on the structure within given limits, and to restrict the distribution of zones of the limit state. 2. The presence of one earthquake-proofing layer directly at the base of the dam or of several layers alternating with the main soil located at a height up to 0.5Hd from the base can reduce the level of the seismic load on the structure by a factor of 1.5–2. 3. By varying the location of the earthquake-proofing layers over the height of the dam it is possible to locally influence a change in the level of the seismic load on the structure and dimensions and location of zones of the limit state. 4. The investigated design measures can effect a savings in certain cases due to using cheaper soils for the earthquake-proofing layers compared to the main soils of the dam, and mainly due to depressing the profile when providing its seismic stability. 5. The investigated designs are sufficiently efficient technologically, and their practical realization is not related to any changes in traditional construction methods.
Use of earthquake-proofing to provide seismic stability of earth dams
Lyatkher, V. M. (Autor:in) / Natarius, Ya. I. (Autor:in) / Ivashchenko, I. N. (Autor:in) / Li, A. T. (Autor:in) / Gordienko, P. P. (Autor:in)
Hydrotechnical Construction ; 14 ; 457-463
01.05.1980
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Use of earthquake-proofing to provide seismic stability of earth dams
| Online Contents | 1980
| British Library Conference Proceedings | 2010
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| Springer Verlag | 1992
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