Behavior of Connected and Unconnected Back-to-Back Walls for Bridge Approaches
Publication: International Journal of Geomechanics
Volume 20, Issue 7
Abstract
Back-to-back mechanically stabilized earth (MSE) walls are commonly used in the construction of transportation infrastructure facilities. Federal Highway Administration (FHWA) guidelines discuss briefly the design of reinforced back-to-back walls. In this study, a numerical model was developed to study the behavior of connected and unconnected back-to-back walls under working stresses. The effect of reinforcement stiffness on tensile force profiles, the maximum tensile force developed in the reinforcement, and lateral pressures and lateral deformations for both unconnected and connected walls are discussed in detail. A well-defined critical slip surface was observed for the case of the unconnected back-to-back wall with relatively extensible reinforcement. Lateral pressures at the facing in both the cases were found to be almost equal, and the tensile forces developed in the reinforcement for the connected case were found to be uniform along the length of the reinforcement (except at higher depths).
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References
Allen, T. M., R. J. Bathurst, R. D. Holtz, D. Walters, and W. F. Lee. 2003. “A new working stress method for prediction of reinforcement loads in geosynthetic walls.” Can. Geotech. J. 40 (5): 976–994. https://doi.org/10.1139/t03-051.
Anubhav, S., and P. K. Basudhar. 2011. “Numerical modelling of surface strip footings resting on double-faced wrap-around vertical reinforced soil walls.” Geosynth. Int. 18 (1): 21–34. https://doi.org/10.1680/gein.2011.18.1.21.
Balunaini, U., S. M. Sravanam, and M. R. Madhav. 2017. “Effect of compaction stresses on performance of back-to-back retaining walls.” In Proc., 19th Int. Conf. Soil Mechanics and Geotechnical Engineering, Seoul, South Korea, edited by W. Lee, J.-S. Lee, H.-K. Kim, and D.-S. Kim, 1951–1954.
Bathurst, R. J., A. Nernheim, D. L. Walters, T. M. Allen, P. Burgess, and D. D. Saunders. 2009. “Influence of reinforcement stiffness and compaction on the performance of four geosynthetic-reinforced soil walls.” Geosynth. Int. 16 (1): 43–59. https://doi.org/10.1680/gein.2009.16.1.43.
Benmebarek, S., S. Attallaoui, and N. Benmebarek. 2016. “Interaction analysis of back-to-back mechanically stabilized earth walls.” J. Rock Mech. Geotech. Eng. 8: 697–702. https://doi.org/10.1016/j.jrmge.2016.05.005.
Benmebarek, S., and M. Djabri. 2017. “FEM to investigate the effect of overlapping-reinforcement on the performance of back-to-back embankment bridge approaches under self-weight.” Transp. Geotech. 11: 17–26. https://doi.org/10.1016/j.trgeo.2017.03.002.
Berg, R. R., B. R. Christopher, and N. C. Samtani. 2009. Vol. I of Design and construction of mechanically stabilized earth walls and reinforced soil slopes. Geotechnical Engineering Circular No. 011, FHWA-NHI-10-024. Washington, DC: FHWA.
Djabri, M., and S. Benmebarek. 2016. “FEM analysis of back-to-back geosynthetic-reinforced soil retaining walls.” Int. J. Geosynth. Ground Eng. 2 (3): 26. https://doi.org/10.1007/s40891-016-0067-1.
Duncan, J. M., P. Byrne, K. S. Wong, and P. Mabry. 1980. Strength, stress-strain and bulk modulus parameters for finite element analyses of stresses and movements in soil masses. Berkeley, CA: Univ. of California.
Dyer, N. R. and G. W. E. Milligan. 1984. A photoelastic investigation of the interaction of a cohesionless soil with reinforcement placed at different orientations. In Int. Conf. on In situ Soil and Rock Reinforcement, Paris, 257–262.
Ehrlich, M., and J. K. Mitchell. 1994. “Working stress design method for reinforced soil walls.” J Geotech. Eng. 120 (4): 625645.
Ehrlich, M., and S. H. Mirmoradi. 2013. “Evaluation of the effects of facing stiffness and toe resistance on the behavior of GRS walls.” Geotext. Geomembr. 40: 28–36. https://doi.org/10.1016/j.geotexmem.2013.07.012.
El-Sherbiny, R., E. Ibrahim, and A. Salem. 2013. “Stability of back-to-back mechanically stabilized earth walls.” In Geo-Congress 2013: Stability and Performance of Slopes and Embankments III, Geotechnical Special Publication 231, edited by C. Meehan, D. Pradel, M. A. Pando, and J. F. Labuz, 555–565. San Diego, CA: ASCE.
Fakharian, K., and I. H. Attar. 2007. “Static and seismic numerical modeling of geosynthetic-reinforced soil segmental bridge abutments.” Geosynth. Int. 14 (4): 228–243. https://doi.org/10.1680/gein.2007.14.4.228.
Guler, E., M. Hamderi, and M. M. Demirkan. 2007. “Numerical analysis of reinforced soil-retaining wall structures with cohesive and granular backfills.” Geosynth. Int. 14 (6): 330–345. https://doi.org/10.1680/gein.2007.14.6.330.
Han, J., and D. Leshchinsky. 2010. “Analysis of back-to-back mechanically stabilized earth walls.” Geotext. Geomembr. 28 (3): 262–267. https://doi.org/10.1016/j.geotexmem.2009.09.012.
Hardianto, F. S., and K. M. Truong. 2010. “Seismic deformation of back-to-back mechanically stabilized earth (MSE) walls.” In Earth Retent. Conf. 3, Geotechnical Special Publication 208, edited by R. Finno, Y. M. A. Hashash, and P. Arduino, 704–711. Bellevue, WA: ASCE.
Hatami, K., and R. J. Bathurst. 2005. “Development and verification of a numerical model for the analysis of geosynthetic-reinforced soil segmental walls under working stress conditions.” Can. Geotech. J. 42 (4): 1066–1085. https://doi.org/10.1139/t05-040.
Hatami, K., and R. J. Bathurst. 2006. “Numerical model for reinforced soil segmental walls under surcharge loading.” J. Geotech. Geoenviron. Eng. 132 (6): 673–684. https://doi.org/10.1061/(ASCE)1090-0241(2006)132:6(673).
Ho, S. K., and R. K. Rowe. 1996. “Effect of wall geometry on the behaviour of reinforced soil walls.” Geotext. Geomembr. 14 (10): 521–541. https://doi.org/10.1016/S0266-1144(97)83183-4.
Holtz, R. D., and W. F. Lee. 2002. Internal stability analyses of geosynthetic reinforced retaining walls. Rep. No. WA-RD 532.1. Seattle: Washington State Transportation Center, Univ. of Washington.
Huang, B., Bathurst, R. J., Hatami, K., and T. M. Allen. 2010. “Influence of toe restraint on reinforced soil segmental walls.” Canadian Geotechn. J. 47 (8): 885904.
Jewell, R. A. 1980. Some effects of reinforcement on the mechanical behavior of soils. Cambridge: University of Cambridge.
Lambe, T. W., and R. V. Whitman. 1969. Soil mechanics. New York: Wiley.
Leshchinsky, B. 2014. “Limit analysis optimization of design factors for mechanically stabilized earth wall-supported footings.” Transp. Infrastruct. Geotechnol. 1 (2): 111–128. https://doi.org/10.1007/s40515-014-0005-4.
Ling, H. I., C. P. Cardany, L.-X. Sun, and H. Hashimoto. 2000. “Finite element study of a geosynthetic-reinforced soil retaining wall with concrete block facing.” Geosynth. Int. 7 (2): 137–162. https://doi.org/10.1680/gein.7.0170.
Ling, H. I., and D. Leshchinsky. 2003. “Finite element parametric study of the behavior of segmental block reinforced-soil retaining walls.” Geosynth. Int. 10 (3): 77–94. https://doi.org/10.1680/gein.2003.10.3.77.
Mirmoradi, S. H., and M. Ehrlich. 2015. “Numerical evaluation of the behavior of GRS walls with segmental block facing under working stress conditions.” J. Geotech. Geoenviron. Eng. 141 (3): 04014109. https://doi.org/10.1061/(ASCE)GT.1943-5606.0001235.
Rowe, R. K., and G. D. Skinner. 2001. “Numerical analysis of geosynthetic reinforced retaining wall constructed on a layered soil foundation.” Geotext. Geomembr. 19 (7): 387–412. https://doi.org/10.1016/S0266-1144(01)00014-0.
Sravanam, S. M., U. Balunaini, and M. R. Madhav. 2019. “Behavior and design of back-to-back walls considering compaction and surcharge loads.” Int J Geosyn Ground Eng. 5 (4): 117.
Wu, J. T. H., C. Y. Ma, T. Q. Pham, and M. T. Adams. 2011. “Required minimum reinforcement stiffness and strength in geosynthetic-reinforced soil (GRS) walls and abutments.” Int. J. Geotech. Eng. 5 (4): 395–404. https://doi.org/10.3328/IJGE.2011.05.04.395-404.
Yang, K.-H., J. G. Zornberg, and R. J. Bathurst. 2010. “Mobilization of reinforcement tension within geosynthetic-reinforced soil structures.” In Earth Retent. Conf. 3, Geotechnical Special Publication 208, edited by R. Finno, Y. M. A. Hashash, and P. Arduino, 494–501. Bellevue, WA: ASCE.
Yoo, C., and A. R. Song. 2006. “Effect of foundation yielding on performance of two-tier geosynthetic-reinforced segmental retaining walls: A numerical investigation.” Geosynth. Int. 13 (5): 181–194. https://doi.org/10.1680/gein.2006.13.5.181.
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© 2020 American Society of Civil Engineers.
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Received: Feb 1, 2019
Accepted: Nov 18, 2019
Published online: Apr 22, 2020
Published in print: Jul 1, 2020
Discussion open until: Sep 22, 2020
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