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Shearing Rate Effect on Interfacial Friction Between Sand and
Steel
Al-Mhaidib, Abdullah I
ISOPE-2005: Fifteenth (2005) International Offshore and Offshore
and Polar Engineering Conference. Vol. 1-4. 2005
Direct shear tests were conducted to investigate the effect of
shearing rate on interface friction angle between sand and steel.
A total of fortyfive shear tests were carried out using the
conventional direct shear test apparatus. The tests were performed
under three values of normal stress on smooth and rough steel
surfaces. Samples were sheared at five different rates. In
addition, uplift model pile tests were conducted using the same
materials and under the same loading rates used in the direct
shear tests. Experimental results showed that both the internal
friction angle (4) of the sand and the interface friction angle
(S) increase with increasing the shearing rate. The relationship
between angles t and S and the shearing rate can be represented by
a straight line on a semilogarithimic plot The values of the
interface friction angles were back-calculated from the measured
uplift capacity in the model pile tests and compared with the
corresponding interface friction angles obtained from direct shear
tests.
 Descriptors: Sand | Friction | Shear tests | Steels | Offshore structures | Piles | Loading rate | Stresses
ANTE | Sand | Friction | Shear tests | Steels | Offshore
structures | Piles | Loading rate | Stresses
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