Shear band formation behind retaining structures subjected to seismic excitation

• Autorzy: Green R. A. , Michalowski R. L.
• Języki publikacji: EN

Abstrakty

EN

The behaviour of soil retaining structures during earthquakes is investigated. Seismic excitation imparts inertial forces to the soil retaining system, and, once the seismic acceleration reaches the yield level, the structure exhibits permanent displacements. This is typically associated with appearance of a shear band in the backfill. The application of the kinematic approach of limit analysis is briefly discussed. A specific example of a retaining wall with one distinct shear band is then presented. The inclination of the shear band is found to be dependent on the acceleration amplitude of the seismic excitation, per classical earth pressure theory. Also, it was found that the inclination of the shear band docs not remain stationary, but rather changes throughout the shaking in response to the variation in the acceleration amplitude of the excitation. This phenomenon is illustrated by results from both a physical experiment and a numerical prediction, which indicate a distinct change in the shear band inclination during seismic excitation, leaving a clear pattern of "shear banding".

Słowa kluczowe

EN

seismic excitation; earthquake; yield acceleration; shear band; retaining wall; plasticity

PL

sejsmiczność; trzęsienie ziemi; ściana oporowa; plastyczność

• Wydawca: Wydawnictwo Politechniki Poznańskiej
• Czasopismo: Foundations of Civil and Environmental Engineering
• Rocznik: 2006
• Tom: No. 7
• Strony: 157--169
• Opis fizyczny: Bibliogr. 14 poz.

Twórcy

autor

Green R. A.

autor

Michalowski R. L.

• University of Michigan, Ann Arbor, USA Tel.: [phone]; fax: [phone],

Bibliografia

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• 3. Green, R.A., Ebcling, R.M.: Seismie Analysis of Canlilevcr Rclaining Walls, Phasc l, Technieal Rcport ERDC/ITL TR-02-3, US Army Corps of Enginccrs Enginecring Research and Development Ccntcr, Yicksburg, MS, (2002) 104pp.
• 4. Green, R.A., Ebeling, R.M.: Modeling the Dynamic Response of Cantilever Earth-Rctaining Walls Using FLAC, Proc., 3' International Symposium on FLAC and FLAC30 Numerical Modeling in Gcomechanics (R. Brummer, P. Andricux, C. Detournay, and R. Hart, cds.), A.A. Balkcma Publishcrs: (2003) 333-342.
• 5. Green, R.A., Olgun, C.G., Ebcling, R.M., Cameron, W.L: Scismically Induccd Lateral Earth Prcssurcs on a Cantilcver Retaining Wall, Advancing Mitigation Technologies and Disastcr Response for Lifclinc Systems (J.E. Beavcrs, ed.), ASCH Technieal Council on Lifcline Earthąuake Engineering Monograph No. 25 (2003) 946-955.
• 6. Green, R.A., Olgun, C.G., Cameron, W.I.: The Dynamic Response of Cantilever Retaining Walls Subjectcd to Earthąuake Motions, Proc. 23 Southeastern Conference on Theoretical and Applied Mechanics (M.A. Pando, F.J. Acosta, and L.E. Suarez, eds.), Mayague/, Puerto Rico, May 21 -23, (2006) 14 pp.
• 7. Ilasca Consulting Group: FLAC, Fast Lagranglan Analysis of Continua, User's Manual. Minncapolis, Minnesota, USA, 1997.
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• 14. Whitman, R.V.: Letters to the Army Enginecr Division, South Pacific, dated: 14 April 1953, 19 May 1953, and 20 May 1953.