期刊
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
卷 30, 期 8, 页码 757-766出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.soildyn.2010.03.006
关键词
P-wave velocity; Constrained elastic modulus; Poisson's ratio; Quartz sand; Grain size distribution curve; Coefficient of uniformity; Resonant column tests
The paper presents an experimental study on the influence of the grain size distribution curve on dynamic soil properties. More than 160 resonant column tests with additional P-wave measurements have been performed on 27 different grain size distribution curves of a quartz sand. While the small-strain shear modulus has been discussed by Wichtmann and Triantafyllidis [1] the present paper focusses on P-wave velocity v(P), on the small-strain constrained elastic modulus M-max and on Poisson's ratio v. It is demonstrated that while v(P) and M-max, do not significantly depend on mean grain size d(50) in the investigated range, they decrease with increasing coefficient of uniformity C-u=d(60)/d(10) of the grain size distribution curve. Poisson's ratio does also not depend on d(50) but increases with increasing C-u. An empirical formula similar to Hardin's equation has been developed for M-max, considering the influence of the grain size distribution curve. It predicts quite well the experimental data. (C) 2010 Elsevier Ltd. All rights reserved.
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