Canadian Geotechnical Journal · 1992 · 241 citations · 0 references
EngineeringSoil LiquefactionSoil-structure InteractionStructural EngineeringGeotechnical EngineeringPenetration ResistanceGeotechnical ProblemSeismic AnalysisCyclic LoadingSeabed LiquefactionEarthquake EngineeringStructural Health MonitoringLiquefaction HazardsEngineering GeologySeismologyGeotechnical PropertyCivil EngineeringGeomechanicsLiquefaction PotentialStructural Mechanics
Liquefaction hazards have been increasingly recognized and analyzed over the past 25 years, improving understanding of the phenomenon and site evaluation. The study reviews recent SCPT findings for liquefaction assessment under cyclic loading and proposes a new normalized shear‑wave velocity method. SCPT rapidly measures penetration resistance, pore pressure, and shear‑wave velocity, and the authors evaluate existing resistance‑based methods while introducing a normalized shear‑wave velocity correlation supported by limited case data. A worked example demonstrates SCPT’s usefulness for site liquefaction assessment. Keywords: liquefaction, in situ tests, seismic.
Impressive progress has been made in the last 25 years in recognizing liquefaction hazards, understanding liquefaction phenomena, and analyzing and evaluating the potential for liquefaction at a site. Recent findings related to the application of the seismic cone penetration test (SCPT) for the evaluation of liquefaction potential under cyclic loading are presented and discussed. The SCPT provides independent measurements of penetration resistance, pore pressures, and shear-wave velocity in a fast, continuous, and economic manner. The current methods available for evaluating liquefaction using penetration resistance are presented and discussed. Recent developments in the application of shear-wave velocity to evaluate liquefaction potential are discussed, and a new method based on normalized shear-wave velocity is proposed. Limited case-history data are used to evaluate and support the proposed correlation. A worked example is presented to illustrate the potential usefulness of the SCPT for evaluating liquefaction potential at a site. Key words : liquefaction, in situ tests, seismic.