Energy-Based Method for Liquefaction Potential Evaluation. Phase 1. Feasibility Study.
Energy-Based Method for Liquefaction Potential
Evaluation. Phase 1. Feasibility Study.
Ostadan, F.; Deng, N.; Arango, I.
NIST GCR 96-701; 272 p. August 1996.
Sponsor:National Institute of Standards and Technology,
Available from: National Technical Information Service
Order number: PB96-214747
building technology; liquefaction; strain energy;
earthquakes; ground response; cyclic testing; laboratory
measurements; ground motion; pore pressure
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.