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Modelling of non-linear seismic ground response using elasto-plastic constitutive framework within a finite element soil column model

Azeddine Chehat, Zamila Harichane, Amina Sadouki


DOI: https://doi.org/10.20528/cjsmec.2017.05.011

Abstract


The prediction of seismic ground response is conditioned by the knowledge of each material behavior of soil deposits. The recourse to plasticity criterion to simulate cyclic behavior of soils under seismic loading is becoming more realistic. In this study, an elasto-plastic constitutive equation is cast within the framework of one dimensional finite element (FE) soil column model to account for the spatial and material nonlinearity of the secant shear modulus. To account of the spatial non linearity, shear modulus is written in terms of rigid base shear modulus and height of the soil column, while for material nonlinearity, the shear modulus degradation is deducted by the application of the isotropic evolution of the Von Misès criterion. Obtained results proved the efficiency of the proposed methodology and the predictive capability of the elaborated elastoplastic model which captures both small- and large-strain behaviors. They likewise highlight the important roles that play the spatial and material shear modulus variation in the prediction of the seismic soil responses.


Keywords


Von Misès criterion; cyclic behaviour; shear modulus; seismic response, Bessel’s function, large-strain

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References


Billing JR (1984). Dynamic loading and testing of bridges in Ontario. Canadian Journal of Civil Engineering, 11(4), 833-843.

Brady SP, O'Brien EJ, Žnidarič A (2006). Effect of vehicle velocity on the dynamic amplification of a vehicle crossing a simply supported bridge. Journal of Bridge Engineering, 11(2), 241-249.

Brincker R, Zhang L, Andersen P (2000). Modal identification from ambient response using frequency domain decomposition. Proceedings of the 18th International Modal Analysis Conference (IMAC18), Society for Experimental Mechanics, San Antonio, TX, USA, 625-630.

Cantieni R (1983). Dynamic load tests on highway bridges in Switzerland. Rep. No. 211, Eidgenossische Material-prufungs-und Versuchsantalt (EMPA), Dubendorf, Switzerland.

Chen Y, Feng MQ, Tan CA (2006). Modeling of traffic excitation for system identification of bridge structures, Computer‐Aided Civil and Infrastructure Engineering, 21(1), 57-66.

Feng MQ, Kim DK, Yi J-H, Chen Y (2004). Baseline models for bridge performance monitoring, Journal of Engineering Mechanics, 130(5), 562-569.

Gomez HC (2011). System identification of highway bridges using long-term vibration monitoring data, Ph.D. thesis, University of California, Irvine, USA.

Gomez HC, Fanning PJ, Feng MQ, Lee S (2011). Testing and long-term monitoring of a curved concrete box girder bridge, Engineering Structures, 33(10), 2861-2869.

Huang D (2008). Dynamic loading of curved steel box girder bridges due to moving vehicles. Structural Engineering International, 18(4), 365-372.

Kim CY, Jung DS, Kim NS, Kwon DS, Feng MQ (2003). Effect of vehicle weight on natural frequencies of bridges measured from traffic-induced vibration. Earthquake Engineering and Engineering Vibration, 2(1), 109-115.

Kim S, Sokolik A, Nowak A (1996). Measurement of truck load on bridges in Detroit, Michigan, area. Transportation Research Record: Journal of the Transportation Research Board, 1541(1), 58-63.

Senthilvasan J, Thambiratnam DP, Brameld GH (2002). Dynamic response of a curved bridge under moving truck load. Engineering Structures, 24(10), 1283-1293.


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