Two-Dimensional Finite Element Analysis of Laboratory Seawall Model

Abstract:

Two-Dimensional finite element analysis was used to investigate the performance of seawall construction over weak subgrade soil using artificial base layer material consisted of cemented sand cushion comprising geosynthetics materials. Two types of base layer materials pure sand and cemented sand comprising husk rich ash and two types of geosynthetics materials geogrid and geotextile were used. Constitutive models were used to represent different materials in numerical analysis. The competence of two-dimensional numerical analysis was compared with experimental results. Numerical results showed a superior harmony with the experimental results. Finite element analysis model proved to be a great tool to determine the parameters that are difficult to measure in laboratory experiments. In addition, finite element analysis has the benefit of cost and time saving when compared to experimental investigation work. Numerical results showed strain induced in geosynthetics eliminated beyond a distance approximately equal six times of footing width.

• Periodical: Applied Mechanics and Materials (Volumes 580-583)
• Pages: 2134-2140
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.580-583.2134
• Online since: July 2014
• Authors: Jian Zhang*, Jian Feng Zhai, Xian Mei Wang, Jie Chen
• Keywords: Constitutive Model, Numerical Analysis, Seawall, Two-Dimensional Finite Element

References

[1] Abdel-Khalek H. M. (1994). Geotechnical behaviour of soil reinforced with geogrid, M. Sc. Thesis, Civil Eng. Dept., Cairo University, Egypt.

[2] Ahmed A. (2004). Utilization of shredded waste tires in the strengthening of unpaved roads over soft clay. Ph.D. Thesis, Civil Eng. Dept., Faculty of Engineering, El-Mina University, El-Minia, Egypt.

[3] Chandra S. Desai and Khaled E. El-Hoseiny. (2005). Prediction of field behavior of reinforced soil wall using advanced constitutive model Journal of Geotechnical and Geoenvironmental Engineering, ASCE, 131 (6): 729-739.

DOI: 10.1061/(asce)1090-0241(2005)131:6(729)

[4] Duncan J.M., Chang C.Y. (1970). Nonlinear analysis of stress and strain in soils. Journal of Soil Mechanics and Foundations Divisions, ASCE, 96 (SM5): 1629-1654.

[5] Duowen Ding and S. Keith Hargrove. (2006). Non linear stress-strain relationship of soil reinforced with flexible geofibers. Journal of Geotechnical and Geoenviromental Engineering, ASCE, 132 (6): 791-794.

DOI: 10.1061/(asce)1090-0241(2006)132:6(791)

[6] Hassona F.A. Hassan M.A. Hashem M.D. Marei N.A. and Aly A.A., (2005). Numerical analysis of laboratory model footing. Bulletin of the Faculty of Engineering, Faculty of Al-Azhar Engineering, Cairo, Egypt, 119 (1).

[7] Hashem M. D., Abdel-Megeed M. and Youness A. H. (2000). Elastic-plastic finite element analysis of pullout resistance of geosynthetics in sandy Soil. Bulletin of the Faculty of Engineering, Assiut University, 29 (1): 127-134.

[8] Love J.P., Burd H.J., Milligan G.W.E. and Houlsby G.T. (1987). Analytical and model studies of reinforcement of a Granular layer on a soft clay subgrade. Can. Ceitechincal Journal, 24: 611-622.

DOI: 10.1139/t87-075

[9] Mauricio A. (1998). Numerical analysis of pavement base reinforced with geogrid, Proc. 6th. Int. Conf. on Geosynthetics, Atlanta, Georgia USA, 891 – 894.

[10] Marei E.A., (1998). Enhancing the performance of foundations resting on very soft clay using cemented and composite sand cushions. Ph. D. Thesis, Civil Eng. Dept., Faculty of Eng., Cairo University, Egypt.

[11] Rodrigues R. M. (1998). Performance predication model for asphalt overlays with geotextile interlayer on cracked pavement, Sixth international conference on geosynthetics, Atlanta, Georgia, USA, (2): 973-976.

[12] Saleh, N. S. (1996). Study of strip footings on geosynthetics-reinforced sand underlain by weak clay. Ph.D. Thesis, Civil Eng. Dept., Cairo University, Cairo, Egypt.

[13] SIGMA/W Users Guide, Version 5. (2001). Software computer program for finite element in stress-deformation analysis. Geo-Slope International Ltd., Calgary, Alberta, Canada.