Experimental Evaluation of Pullout Analyses for Planar Reinforcements
Publication: Journal of Geotechnical Engineering
Volume 121, Issue 6
Abstract
This paper presents results of laboratory pullout experiments with planar soil reinforcements that are used to evaluate the proposed shear-lag analyses described in a companion paper. Measurements of tensile stress distributions were obtained for thin steel and nylon 6/6 sheet inclusions embedded in dense Ticino sand. The steel reinforcement is relatively inextensible, with linear stress distribution and load-elongation behavior. The interface friction is well defined from repeatable measurements of the peak pullout resistance. In contrast, the response of the extensible nylon 6.6 reinforcements is highly nonlinear with a pronounced postpeak reduction in pullout resistance. The interface friction can be interpreted reliably from the residual pullout resistance, although these data are affected by stick-slip behavior in tests performed at low displacement rates. The measured data are in good agreement with shear-lag predictions of nonlinear load distributions throughout the test and illustrate very clearly the postpeak “snap-through” mechanism described by the analysis. Further experimental measurements are required to evaluate other aspects of the analyses such as stress concentrations at the sliding front.
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References
1.
Abramento, M. (1993). “Analysis and measurement of stresses in planar soil reinforcements,” PhD thesis, Dept. of Civ. and Envir. Engrg., Massachusetts Inst. of Technol., Cambridge, Mass.
2.
Abramento, M., and Whittle, A. J.(1995). “Analysis of pullout tests for planar reinforcements in soil.”J. Geotech. Engrg., ASCE, 121(6), 476–485.
3.
Arthur, J. R. F., and Menzies, B. K.(1972). “Inherent anisotropy in a sand.”Géotechnique, London, 22(1), 115–128.
4.
Baldi, G., et al. (1985). “Laboratory validation of in-situ tests.”AGI Jubilee Vol., Proc. 11th Int. Conf. on Soil Mech. and Found. Engrg., ICSMFE, San Francisco.
5.
Bowden, F. P., and Tabor, D. (1950). The friction and lubrication of solids, Clarendon Press, Oxford, U.K.
6.
Chang, J. C., Hannon, J. B., and Forsyth, R. A. (1977). “Pull-out resistance and interaction with earth reinforcement and soil.”Transp. Res. Rec. No. 640, Washington, D.C.
7.
Chauhan, S. (1995). PhD thesis, Massachusetts Inst. of Technol., Dept. of Civ. and Envir. Engrg., Cambridge, Mass.
8.
Delmas, P., Gourc, J. P., and Giroud, J. P. (1979). “Analyse expérimentale de l'interaction mécanique sol-géotextile.”Proc., Int. Conf. on Soil Reinforcement, Paris, 1, 29–34 (in French).
9.
Juran, I., and Christopher, B.(1989). “Laboratory model study on geosynthetic reinforced soil retaining walls.”J. Geotech. Engrg., ASCE, 115(7), 905–926.
10.
Kishida, H., and Uesugi, M.(1987). “Tests of the interface between sand and steel in the simple shear apparatus.”J. Geotech. Engrg., ASCE, 37(1), 45–52.
11.
Larson, D. G. (1992). “A laboratory investigation of load-transfer in reinforced soil,” PhD thesis, Massachusetts Inst. of Technol., Dept. of Civ. and Envir. Engrg., Cambridge, Mass.
12.
Miura, S., and Toki, S. (1983). “A sample preparation method and its effect on static and cyclic deformation-strength properties of sand.”Soils and Found. 22(1), 61–77.
13.
O'Rourke, T. D., Druschel, S. J., and Nevratali, A. N.(1990). “Shear strength characteristics of sand-polymer interfaces.”J. Geotech. Engrg., ASCE, 116(3), 451–469.
14.
Palmeira, E. M. (1987). “The study of soil-reinforcement interaction by means of large scale laboratory tests,” PhD thesis, Univ. of Oxford, U.K.
15.
Palmeira, E. M., and Milligan, G. W. E.(1989). “Scale and other factors affecting the results of pullout tests of grids buried in sand.”Géotechnique, London, 39(3), 511–524.
16.
“Plastics (2): D1601-D3099.” (1988). Annual book of ASTM standards, Vol. 08.02, ASTM, Philadelphia, Pa.
17.
Rowe, R. K., Ho, S. K., and Fisher, D. G. (1985). “Determination of soil-geotextile interface strength properties.”Proc., 2nd Can. Symp. on Geotextiles and Geomembranes, Edmonton, Canada, 25–34.
18.
Schlosser, F., and Elias, V. (1978). “Friction in reinforced earth.”Proc., ASCE Symp. on Earth Reinforcement, Pittsburg, 735–762.
19.
Shen, C. K., Mitchell, J. K., deNatale, J. S., and Romstad, K. M.(1979). “Laboratory testing and model studies of friction in reinforced earth.”Proc. Int. Conf. on Soil Reinforcement, Paris, France, 1, 169–174.
20.
Whittle, A. J., Germaine, J. T., Larson, D. G., and Abramento, M. (1992). “Measurement and interpretation of reinforcement stresses in the APSR cell.”Proc. Int. Symp. on Earth Reinforcement Practice, Fukuoka, Japan.
21.
Whittle, A. J., Larson, D. G., Germaine, J. T., and Abramento, M. (1993). “A new device for evaluating load-transfer in geosynthetic reinforced soils.”Geosynthetic soil reinforcement testing procedures: ASTM STP 1190, S. C. Jonathan Cheng, Ed., ASTM, Philadelphia, Pa., 1–19.
Information & Authors
Information
Published In
Journal of Geotechnical Engineering
Volume 121 • Issue 6 • June 1995
Pages: 486 - 492
Copyright
Copyright © 1995 American Society of Civil Engineers.
History
Published online: Jun 1, 1995
Published in print: Jun 1995
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