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Dynamic centrifuge testing of a cantilever retaining wall

Ortiz, L. A. and Scott, R. F. and Lee, J. (1983) Dynamic centrifuge testing of a cantilever retaining wall. Earthquake Engineering and Structural Dynamics, 11 (2). pp. 251-268. ISSN 0098-8847. doi:10.1002/eqe.4290110207.

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Two correctly-scaled model cantilever retaining walls of different stiffnesses were tested under dynamic loading conditions in a centrifuge. A medium-dense fine sand was retained with a range of backfill slopes. For the centrifuge model, an earthquake-generating mechanism was designed to produce seismic shaking equivalent to that generated at ground surface in the epicentral area of an earthquake of approximate magnitude 5–5. The response of the model retaining walls to the input dynamic motion was measured by strain gauges, pressure transducers and accelerometers. From the measurements plots were constructed of moment, shear, pressure and displacement over the height of the walls as a function of time. The results are compared with calculations based on the quasi-static Mononobe-Okabe theory. Although the calculated resultant force is in reasonable agreement with the experiments, the moments can be substantially different. Residual values of all parameters at the end of shaking are considerably greater than the initial static values. It is recommended that dynamic behaviour be incorporated in the earthquake design of retaining walls.

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Additional Information:© 1983 by John Wiley & Sons, Ltd. Received 9 October 1981; Revised 17 July 1982. This work was performed under Grant No. CME79-13822 from the National Science Foundation. Any opinions, findings and conclusions or recommendations expressed in this publication are those of the authors and do not necessarily reflect the views of the National Science Foundation.
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Official Citation:Ortiz, L. A., Scott, R. F. and Lee, J. (1983), Dynamic centrifuge testing of a cantilever retaining wall. Earthquake Engng. Struct. Dyn., 11: 251–268. doi: 10.1002/eqe.4290110207
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:51101
Deposited By: Tony Diaz
Deposited On:31 Oct 2014 16:06
Last Modified:10 Nov 2021 19:05

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