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Shake table calibration and specimen preparation for liquefaction studies in the centrifuge
Faculty
Not Specified
Year:
2003
Type of Publication:
Article
Pages:
402-409
Authors:
Dief, HM, Figueroa, JL
Journal:
GEOTECHNICAL TESTING JOURNAL AMER SOC TESTING MATERIALS
Volume:
26
Research Area:
Engineering; Geology
ISSN
ISI:000186864100005
Keywords :
centrifuge modeling, dynamic testing, pore fluid, shake table calibration, signal feedback correction, soil model preparation, liquefaction
Abstract:
Recently, a new geotechnical centrifuge was installed at Case Western Reserve University (CWRU). To use this facility in studying soil liquefaction required the development of a feedback correction procedure for the shake table input signals and an appropriate procedure for model preparation, as well as the design of a saturation system setup. These procedures are discussed in detail. Dynamic centrifuge tests at a scale of 60 g's were conducted on scaled pore fluid-saturated models. This fluid is a solution of a water-soluble polymer derived from cellulose at 60 times the viscosity of water. A comparison between the behavior of pore pressure responses during two identical dynamic centrifuge tests using either water or a scaled viscous fluid is documented in this paper.
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