Experiment and analysis of the seismic characteristics of liquefiable ground under near-field and far-field ground motion

摘要

This paper documents a series of large-scale shaking table experiments to investigate the dynamic response of liquefaction soil. Test results are discussed in terms of pore water pressure, earthquake-induced ground settlement, and acceleration of soil. The measured data show that, under strong ground motion, the model foundation was more sensitive to the ground motion whose low frequency component is more. Arias intensity of ground motion was associated with the peak of pore water pressure ratio. Under lower PGA ground motion, the magnification effect of acceleration response spectra appeared at the range of low-period component, however, in higher PGA ground motion, the model foundation shows obviously high frequency filtering characteristic. Observations in this study may serve as basis for engineers and researchers.