Correlating q_c and Cyclic Resistance of a Silty Sand through Laboratory Calibration Tests

摘要

The Chi Chi earthquake of September 21, 1999 triggered extensive soil liquefaction in Central Western Taiwan. The majority of the sand deposit in this region had significant amounts of fines. The back analysis of liquefaction potential for the sand deposit in this region using standard penetration (SPT), cone penetration (CPT) and shear wave velocity (Vs) test vales yielded contradicting results. The authors performed a series of CPT chamber calibration tests and cyclic triaxial tests on remolded Mai Liao Sand (MLS) with various fines contents and densities. With these data, the authors were able to calibrate the correlations between CRR and q_c for MLS. This paper describes the geological background of MLS, the laboratory calibration tests and their implications in the assessment of liquefaction potential for MLS.