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Effects of loading frequency and control on the liquefaction behavior of clean sands

Riemer, Michael F.; Gookin, Wiliam B.; Bray, Jonathan D.; Arango, Ignacio

UCB/GT-94-07, University of California, Berkeley, Geotechnical Engineering, Final report on testing sponsored by Bechtel Corporation and the National Science Foundation through PYI Award #BCS-9157083, 1994-12, PDF (4 MB)

This study discusses the liquefaction behavior of remolded sand in response to the effects of loading frequency and control. Specific areas investigated are: the effects of loading frequency on the number of cycles to liquefaction, the development of pore pressures prior to liquefaction, the strains and stiffness associated with given loading levels, and the damping and energy dissipation during loading. The scope of the program included a total of 26 tests, all performed on a single type of sand at relative densities of 40%, 50% and 60%. The specimens were loaded at frequencies of 0.1, 1, 10, 15, and 20 hertz, and both stress and strain controlled loading conditions were investigated.

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