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Analysis of wedge penetration in clay

Baligh, Mohsen M. and Scott, Ronald F. (1976) Analysis of wedge penetration in clay. Géotechnique, 26 (1). pp. 185-208. ISSN 0016-8505. doi:10.1680/geot.1976.26.1.185.

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A variety of devices designed to penetrate soil is used in soil engineering practice to measure soil properties or to emplace instrumentation, although the mechanics of the steady state penetration process is not well understood. Consequently the two-dimensional problem of steady state wedge penetration is examined. Solutions are obtained for wedge penetration in an ideal rigid plastic medium representing a clay. It is found that the solution requires the presence of a cavity behind the wedge, and the geometry of this cavity is established. A lower limit of the soil/wedge friction coefficient is derived, above which the wedge is considered rough. The force required to push the wedge is calculated as a function of wedge point angle and is shown to reach a minimum for a rough wedge at a point angle of about 67°. For axisymmetric penetration some finite element solutions were obtained and show that cone and wedge penetration mechanisms are similar. The mechanism and patterns of flow movement past the wedge for different point angles are demonstrated. Practical implication of the results and their extension to axisymmetric cone penetration are discussed.

Item Type:Article
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Additional Information:© 1976 ICE Publishing Ltd.
Issue or Number:1
Record Number:CaltechAUTHORS:20151104-153837151
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Official Citation:Analysis of wedge penetration in clay Mohsen M. Baligh and Ronald F. Scott Géotechnique 1976 26:1, 185-208
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:61856
Deposited By: Tony Diaz
Deposited On:05 Nov 2015 02:35
Last Modified:10 Nov 2021 22:54

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