Displacements of Reinforced Slopes Subjected to Seismic Loads
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 126, Issue 8
Abstract
Traditional analyses of stability of slopes subjected to seismic loads entail global equilibrium considerations with seismic influence included as a quasi-static force. Such an analysis does not reflect the earthquake shaking process, and it does not provide any information about permanent displacements that may have occurred as a result of that process. Earthquake events in recent years have brought about renewed interest in analyses of slopes subjected to seismic loads. This paper focuses on displacement calculations of reinforced slopes. Design of reinforced slopes using the quasi-static approach may lead to an unrealistically long reinforcement for large ground accelerations. If slopes are allowed to move by even a small displacement, then the reinforcement length can be reduced significantly. Two mechanisms of failure of reinforced slopes subjected to seismic conditions are considered: (1) Rotational collapse; and (2) sliding directly over the bottom layer of reinforcement. Yield accelerations and integrals of seismic records are presented in charts for easy use in practical applications. An example is shown to illustrate the method.
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References
1.
Bathurst, R. J., and Alfaro, M. C. (1996). “Review of seismic design, analysis and performance of geosynthetic reinforced walls, slopes and embankments.” Proc., Int. Symp. on Earth Reinforcement, 23–52.
2.
Bathurst, R. J., and Cai, Z. (1995). “In-isolation cyclic load-extension behavior of two geogrids.” Geosynthetics Int., 1(1), 1–19.
3.
Cai, Z., and Bathurst, R. J. (1996). “Deterministic sliding block methods for estimating seismic displacements of earth structures.” Soil Dyn. and Earthquake Engrg., 15, 255–268.
4.
Chang, C. J., Chen, W. F., and Yao, J. T. P. (1984). “Seismic displacements in slopes by limit analysis.”J. Geotech. Engrg., ASCE, 110(7), 860–874.
5.
Chen, W. F., Giger, M. W., and Fang, H. Y. (1969). “On the limit analysis of stability of slopes.” Soils and Found., Tokyo, 9(4), 23–32.
6.
Jewell, R. A. ( 1990). “Revised design charts for steep reinforced slopes.” Reinforced embankments, theory and practice, Thomas Telford, London, 1–30.
7.
Leshchinsky, D., and Boedecker, R. H. (1989). “Geosynthetic reinforced soil structures.”J. Geotech. Engrg., ASCE, 115(10), 1459–1478.
8.
Ling, H. I., Leshchinsky, D., and Perry, E. B. (1997). “Seismic design and performance of geosynthetic-reinforced soil structures.” Géotechnique, London, 47(5), 933–952.
9.
Michalowski, R. L. (1997). “Stability of uniformly reinforced slopes.”J. Geotech. and Geoenvir. Engrg., ASCE, 123(6), 546–556.
10.
Michalowski, R. L. (1998a). “Soil reinforcement for seismic design of geotechnical structures.” Comp. and Geotechnics, 23(1–2), 1–17.
11.
Michalowski, R. L. (1998b). “Limit analysis in stability calculations of reinforced soil structures.” Geotextiles and Geomembranes, 16(6), 311–331.
12.
Moraci, N., and Montanelli, F. (1997). “Behavior of geogrids under cyclic loads.” Proc., Geosynthetics '97, Vol. 2, Industrial Fabrics Association, St. Paul, Minn., 961–976.
13.
Newmark, N. M. (1965). “Effects of earthquakes on dams and embankments.” Géotechnique, London, 15, 139–160.
14.
Schmertmann, G. R., Chouery-Curtis, V. E., Johnson, R. D., and Bonaparte, R. (1987). “Design charts for geogrid-reinforced soil slopes.” Proc., Geosynthetics '87, Vol. 1, Industrial Fabrics Association International, 108–120.
15.
Tatsuoka, F., Tateyama, M., and Koseki, J. (1995). “Performance of geogrid-reinforced soil retaining walls during the Great Hanshin-Awaji earthquake.” Proc., 1st Int. Symp. on Earthquake Geotech. Engrg., 55–60.
16.
White, D. M., and Holtz, R. D. (1995). “Performance of geosynthetic-reinforced slopes and walls during the Northridge, California earthquake of January 17, 1994.” Rep., University of Washington, Seattle.
17.
Williams, J. G. (1980). Stress analysis of polymers, Wiley, New York.
18.
You, L., and Michalowski, R. L. (1999). “Displacement charts for slopes subjected to seismic loads.” Comp. and Geotechnics, 25(1), 45– 55.
Information & Authors
Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 126 • Issue 8 • August 2000
Pages: 685 - 694
History
Received: Jul 7, 1999
Published online: Aug 1, 2000
Published in print: Aug 2000
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