STOCHASTIC SEISMIC STABILITY PREDICTION OF EARTH DAMS

A method, based on stochastic principles, is presented for seismic stability prediction of earth dams. The problem of nonlinearity due to strain dependent soil properties is solved through the stochastic linearization technique; the formulation for applying this technique to a finite element discretization of a dam is developed. The method is iterative and step-wise linear. Stochastic description of seismic input in terms of spectral density function can be conveniently used in this method. The method can also be used directly with the ground response spectra curves usually prescribed in seismic designs. The concept of linear cumulative damage is used to define failure. Zero crossing the peak statistics of the stress response are used to define the statistics of cumulative damage. The damage is related to the factor of safety which is conventionally used with civil engineering structures. The application of the method is demonstrated with an example of an earth dam. /Author/

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 875-889

Subject/Index Terms

Filing Info

  • Accession Number: 00179786
  • Record Type: Publication
  • Report/Paper Numbers: Proceeding
  • Files: TRIS
  • Created Date: Oct 12 1978 12:00AM