Analysis of Site Liquefaction Using Earthquake Records

Mourad Zeghal and Ahmed-W. Elgamal
Rensselaer Polytechnic Institute, Troy, New York 12180, USA

A one-of-a-kind set of surface and downhole acceleration and pore pressure records were recovered at the Wildlife Refuge site (Imperial country, southern California) during the 1987 Superstition Hills earthquake (Holzer, Youd, and Hanks 1989). These records documented for the first time ever the phenomenon of seismically induced site liquefaction. An analysis of these records produced valuable insight into the site seismic behavior during liquefaction and associated loss of soil stiffness. This analysis is summarized in the following sections, and is fully detailed in the article entitled ``Analysis of Site Liquefaction Using Earthquake Records,'' M. Zeghal, and A.-W. Elgamal, Journal of Geotechnical Engineering, ASCE, Vol. 120 No. 6, pp. 996-1017, June 1994.

The site description, recorded data, and its interpretation were presented in T. L. Holzer, T. L. Youd and T. C. Hanks, ``Dynamics of Liquefaction During the 1987 Superstition Hills, California, Earthquake,'' Science, Vol. 244, pp. 56-59, 1989; and in T. L. Youd and T. L. Holzer ``Piezometer Performance at the Wildlife Liquefaction Site,'' Journal of Geotechnical Engineering, ASCE, Vol. 120, No. 6, 975-995, June 1994.


  1. INSTRUCTIONS

  2. INTRODUCTION

  3. SITE PROFILE AND INSTRUMENTATION

  4. THE SUPERSTITION HILLS 1987 EARTHQUAKE RECORDS

  5. SHEAR STRESS-STRAIN AND EFFECTIVE-PATH HISTORIES

  6. REFERENCES

  7. ACKNOWLEDGMENTS


    Updated August 29, 1995
    For further information or comments, contact: Mourad Zeghal at zegham@rpi.edu or Ahmed-W. Elgamal at elgama@rpi.edu