DRAINAGE EFFECTS OF SEISMIC STABILITY OF ROCKFILL DAMS

A simplified method is presented for incorporating the effect of drainage in seismic stability computations for rockfill dams. The method is intended to supplement the currently used dynamic analysis procedures which are primarily applicable to undrained field conditions. In the proposed method, the effects of drainage are considered by making simplifying assumptions with regard to: a) dissipation of excess pore-water pressures within the embankment; and b) cyclic strength characteristics of embankment materials under partially-drained conditions. This provides a convenient as well as a reasonably adequate basis for arriving at a more realistic assessment of the seismic stability of rockfill dams. However, where more accurate results are required, more elaborate analysis procedures for computing the distribution of excess pore-water pressures in conjunction with appropriate laboratory procedures for conducting partially-drained cyclic strength tests when developed can readily be incorporated in the evaluations. /Author/

Media Info

  • Features: Figures; References;
  • Pagination: p. 802-818

Subject/Index Terms

Filing Info

  • Accession Number: 00179781
  • Record Type: Publication
  • Report/Paper Numbers: Proceeding
  • Files: TRIS
  • Created Date: Oct 12 1978 12:00AM