Estimation of undrained shear strength for saturated clay using shear wave velocity

Undrained shear strength is a fundamental parameter for estimating the stability of soft soils. This study explores the relationship between undrained shear strength, void ratio, and shear wave velocity for saturated and normally consolidated clay specimens. The undrained shear strength void ratio-shear wave velocity relationship was correlated to empirically determined parameters of selected marine clay specimens. To verify the proposed relationship between undrained shear strength and shear wave velocity, in situ flat dilatometer tests were used for determining the undrained shear strength, and downhole tests were used to assess the shear wave velocity on a natural soil deposit at various depths. The undrained shear strength estimated from the in situ shear wave velocities was compared to the undrained shear strength obtained in the field. The results show that the inferred undrained shear strength yield similar values and follow the same trends as the in situ undrained shear strength data. This method using shear wave velocity can help to nondestructively estimate the undrained shear strength of soft soils in the field and be used in both on-shore and off-shore geotechnical engineering projects.
Publisher
Taylor and Francis
Issue Date
2017
Language
ENG
Citation

Marine Georesources & Geotechnology, v.35, no.2, pp.236 - 244

ISSN
1521-0618
DOI
10.1080/1064119X.2016.1140855
URI
http://hdl.handle.net/10203/214378
Appears in Collection
CE-Journal Papers(저널논문)
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