NIST Time|NIST Home|About NIST|Contact NIST

HomeAll Years:AuthorKeywordTitle2005-2010:AuthorKeywordTitle

Energy-Based Method for Liquefaction Potential Evaluation. Phase 1. Feasibility Study.


pdf icon Energy-Based Method for Liquefaction Potential Evaluation. Phase 1. Feasibility Study. (7383 K)
Ostadan, F.; Deng, N.; Arango, I.

NIST GCR 96-701; 272 p. August 1996.

Sponsor:

National Institute of Standards and Technology, Gaithersburg, MD

Available from:

National Technical Information Service
Order number: PB96-214747

Keywords:

building technology; liquefaction; strain energy; earthquakes; ground response; cyclic testing; laboratory measurements; ground motion; pore pressure

Abstract:

This report presents the results of the first phase of a three-phase study on development and application of the energy-based method for prediction of the liquefaction potential of sandy soils. The formulation of the method is based on the convolution of the basic elements from both the "stress" and "strain" approaches and is very flexible in incorporating the special characteristics of ground motion such as the near-field effects. The feasibility phase consists of the tasks: 1) to collect and synthesize laboratory data; 2) to perform ground response analyses at the Wildlife Site, which suffered a massive ground liquefaction failure during the Superstition Hills Earthquake; and finally 3) to compare and to assess the differences between the field and the laboratory data. Even though the scope of the feasibility study did not permit cyclic testing of the soil samples from the Wildlife Site, the correlation of the field response data and the applicable laboratory data are strong. The results of this phase suggest that development of an energy-based method to evaluate liquefaction potential is feasible.