NEHRP Clearinghouse
- Title
- Evaluation of Techniques for Predicting Soil Liquefaction and Verification of Field Techniques to Predict In situ Shear Wave Velocity.
- File
- PB82168444.pdf
- Author(s)
- Chak, J. S.; McRae, C. M.; Arulanandan, K.; Bailey, A. D.
- Source
- National Science Foundation, Washington, DC., July 1981, 76 p.
- Identifying Number(s)
- 78-22
- Abstract
- The liquefaction potential for a site near the San Andreas fault was evaluated by the standard penetration test and analytical, strain potential, and electrical methods. Each method examined influences on the liquefaction characteristics of a saturated sand deposit including density, grain structure, and length of time the sand was subjected to sustained pressure. The standard penetration test procedure indicated that a potential for liquefaction existed in the upper 20 feet of the soil strata; below 20 feet, the site was less likely to liquefy. Results derived by the other three methods indicated a high potential for liquefaction for the total depth explored. Although the degree of liquefaction varied according to the method used, overall results indicated that the sight will liquefy during an earthquake similar to the 1906 San Francisco earthquake. The report also examines the relationship between seismic shear wave velocity and structure index, one of the parameters derived from the electrical probe measurements.
- Keywords
- Predictions; California; Soil tests; Earthquake engineering; San Andreas fault; Liquefaction (Soils); Soil properties; Seismic surveys; Penetration tests; Earthquakes; Geological faults