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Static penetration resistance of soilsModel test results were used to define the failure mechanism associated with the static penetration resistance of cohesionless and low-cohesion soils. Knowledge of this mechanism has permitted the development of a new analytical method for calculating the ultimate penetration resistance which explicitly accounts for penetrometer base apex angle and roughness, soil friction angle, and the ratio of penetration depth to base width. Curves relating the bearing capacity factors to the soil friction angle are presented for failure in general shear. Strength parameters and penetrometer interaction properties of a fine sand were determined and used as the basis for prediction of the penetration resistance encountered by wedge, cone, and flat-ended penetrometers of different surface roughness using the proposed analytical method. Because of the close agreement between predicted values and values measured in laboratory tests, it appears possible to deduce in-situ soil strength parameters and their variation with depth from the results of static penetration tests.
Document ID
19730019713
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Durgunoglu, H. T.
(California Univ. Berkeley, CA, United States)
Mitchell, J. K.
(California Univ. Berkeley, CA, United States)
Date Acquired
September 2, 2013
Publication Date
April 1, 1973
Subject Category
Geophysics
Report/Patent Number
SSL-SER-14-ISSUE-24
NASA-CR-133460
Report Number: SSL-SER-14-ISSUE-24
Report Number: NASA-CR-133460
Accession Number
73N28445
Funding Number(s)
CONTRACT_GRANT: NGR-05-003-406
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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