Earthquake engineering for concrete dams : design, by National Research Council (U.S.). Panel on Earthquake

By National Research Council (U.S.). Panel on Earthquake Engineering for Concrete Dams

The risk posed by means of huge dams has lengthy been recognized. This booklet evaluates modern wisdom in regards to the earthquake functionality of concrete dams, together with tactics for investigating the seismic safeguard of such buildings. It informs researchers approximately earthquake research of concrete dams and identifies components the place extra wisdom is required.

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Extra resources for Earthquake engineering for concrete dams : design, performance, and research needs

Sample text

EARTHQUAKE INPUT 31 Fault Displacement All the above-mentioned analyses were for vibratory seismic input motions. The case of a fault-displacement offset occurring directly beneath the base of a concrete gravity dam also has been studied. In a two-dimensional nonlinear analysis of a dam-foundation system (2-61), a reverse fault was simulated by applying concentrated forces along an assumed fault zone that extended from the finite element boundary of the modeled foundation rock to the base of the dam body.

For the first two modes of a symmetric arch dam (fundamental symmetric and antisymmetric modes), the coefficient may vary over the dam face, as shown in Figure 3-5. These figures are in sharp contrast with the uniform distribution of seismic coefficient that has been assumed traditionally and that has led to erroneous distribution of lateral forces and hence of stresses in the dam. One of the results of assuming a heightwise-uniform seismic coefficient is that calculated stresses in gravity dams are found to be greatest at the base of the dam.

Three-Dimensional Case Analytical solutions for three-dimensional canyon topography are much more difficult to obtain. For the simple case of a hemispherical cavity at the surface of an elastic half-space, series solutions have been obtained for About this PDF file: This new digital representation of the original work has been recomposed from XML files created from the original paper book, not from the original typesetting files. Page breaks are true to the original; line lengths, word breaks, heading styles, and other typesetting-specific formatting, however, cannot be retained, and some typographic errors may have been accidentally inserted.

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