Dynamic Response of Sand Reinforced with Randomly Distributed Fibers
Publication: Journal of Geotechnical Engineering
Volume 116, Issue 7
Abstract
Laboratory resonant‐column and torsional shear tests are performed to determine the dynamic response (i.e., shear modulus and damping) of sands reinforced with discrete, randomly distributed fibers. The effect of fiber inclusion is evaluated as a function of shearing‐strain amplitude, confining stress, prestrain, number of cycles, fiber content, aspect ratio, and modulus. The dynamic modulus increases with increasing fiber aspect ratio, modulus, and with increasing fiber content to a limiting weight fraction. The presence of fibers reduces prestrain effects often observed in unreinforced sands. The increase in dynamic modulus of fiber‐reinforced sand is decidedly more pronounced at high shearing‐strain amplitudes. The maximum percentage increase in modulus as a result of fiber inclusions occurred over a narrow range of confining stresses from 3 to 10 psi (21 to 48 kPa). Damping was less affected by the inclusion of fibers than shear modulus. The dynamic response of sands reinforced with vertically oriented fibers is very similar to that of randomly distributed fibers.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Alcarcon‐Guzman, A. (1986). “Cyclic stress‐strain and liquefaction characteristics of sands,” thesis presented to Purdue University, at West Lafayette, Ind., in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
2.
Drnevich, V. P. (1978). “Resonant column testing—problems and solutions.” Dynamic Geotechnical Testing, ASTM STP 645, ASTM, Chicago, Ill., 384–398.
3.
Drnevich, V. P. (1985). “Recent developments in resonant column testing.” R. D. Woods, ed., Proc., Geotechnical Engineering Division, Oct. 79–107.
4.
Drnevich, V. P., and Richart, F. E., Jr. (1970). “Dynamic prestraining of dry sand,” J. Soil Mech. and Found. Engrg. Div., ASCE, 96(2), 453–469.
5.
Gray, D. H., and Al‐Refeai, T. (1986). “Behavior of fabric‐versus fiber‐reinforced sand.” J. Geotech. Engrg., ASCE, 112(8), 804–820.
6.
Gray, D. H., and Maher, M. G. (1989). “Admixture stabilization of sands with discrete, randomly distributed fibers.” Proc. XIIth Int. Conf. on Soil Mech. and Foundation Engrg., 1363–1366.
7.
Gray, D. H., and Ohashi, H. (1983). “Mechanics of fiber reinforcements in sands.” J. Geotech. Engrg. Div., ASCE, 108(3), 335–353.
8.
Hardin, B. O., and Drnevich, V. P. (1972). “Shear modulus and damping in soils: Design equations and curves.” J. Soil Mech. and Found. Engrg. Div., ASCE, 98(7), 667–692.
9.
Hardin, B. O., and Richart, F. E., Jr. (1963). “Elastic wave velocities in granular soils.” J. Soil Mech. and Found. Engrg. Div., ASCE, 89(1), 33–65.
10.
Maher, M. H. (1988). “Static and dynamic responce of sands reinforced with discrete, randomly distributed fibers,” thesis presented to the University of Michigan, at Ann Arbor, Mich., in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
11.
Noorany, I., and Uzdavines, M. (1989). “Dynamic behavior of saturated sand reinforced with geosynthetic fibers.” Proc. Geosynthetics' 89 Conf., North American Geosynthetics Society, 385–396.
12.
Ray, R. P. (1983). “Changes in shear modulus and damping in cohesionless soils due to repeated loading,” thesis presented to the University of Michigan, at Ann Arbor, Mich., in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
13.
Uzdavines, M. (1987). “Effect of soil reinforcement on the liquefaction potential of saturated sand,” thesis presented to San Diego State University, at San Diego, Calif., in partial fulfillment of the requirements for the degree of Master of Science.
14.
Woods, R. D. (1978). “Measurement of dynamic soil properties.” Proc. Speciality Conf. on Earthquake Engrg. and Soil Dynamics, ASCE, 1, 91–178.
15.
Wu, S. (1983). “Capillary effects on dynamic modulus of fine‐grained cohesionless soils,” thesis presented to the University of Michigan, at Ann Arbor, Mich., in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
Information & Authors
Information
Published In
Journal of Geotechnical Engineering
Volume 116 • Issue 7 • July 1990
Pages: 1116 - 1131
Copyright
Copyright © 1990 ASCE.
History
Published online: Jul 1, 1990
Published in print: Jul 1990
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.