Abstract
For constructing the roads on soft grounds, basal geogrid-reinforced pile-supported embankments are a suitable solution over other conventional ground improvement techniques like preloading, embankment slope flattening, removing and replacing the soft soil, etc. Many studies are available on these basal geogrid-reinforced piled embankments to understand their behaviour under static loading conditions. But it is necessary to understand the behaviour of these geogrid-reinforced piled embankments under seismic excitations. Hence, finite element analysis of three-dimensional models of embankment having crest width of 20 m, height above ground of 6 m, with side slopes of 1V:1.5H consisting of pulverized fuel ash, overlying soft marine clay of 28 m thickness is carried out under seismic excitations corresponding to Zone III (IS:1893). Soft marine clay layer is improved by the addition of piles arranged in square grid pattern with 5.75% area replacement ratio. Geogrid with a tensile modulus of 4600 kN/m is used as the basal reinforcement. Initially, the embankment is analyzed without geogrid reinforcement and pile supports. Then, it is analyzed with (i) Basal geogrid (ii) With pile supports (iii) With basal geogrid and pile supports. The influence of various parameters of the embankment on maximum crest displacements, differential settlements at crest, toe horizontal displacements, stresses at pile head and foundation soil between piles and pile bending moment along the depth at peak acceleration are studied. Analysis of results shows that the embankment supported over piles with basal geogrid reinforcement will experience less crest settlements, differential settlements at crest and toe horizontal displacements due to earthquake load.
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References
Armstrong RJ, Boulanger RW, Beaty MH (2013) Liquefaction effects on piled bridge abutments: centrifuge tests and numerical analyses. J Geotech Geoenvironmental Eng ASCE 139(3):433–443
Ariyarathne P, Liyanapathirana DS (2015) Review of existing design methods for geosynthetic-reinforced pile-supported embankments. J Soils Found 55:17–34
BS 8006:2010. Code of practice for strengthened/reinforced soils and other fills. British Standard Institution, UK
Briançon L, Simon B (2011) Performance of pile-supported embankment over soft soil: full-scale experiment. J Geotech Geoenvironmental Eng 138(4):551–561
Bhasi A, Rajagopal K (2014) Geosynthetic-reinforced piled embankments: comparison of numerical and analytical methods. Int J Geomech ASCE. 15(5):04014074
Bhasi A, Rajagopal K (2015) Numerical study of basal reinforced embankments supported on floating/end bearing piles considering pile-soil interaction. Geotext Geomembr 43:524–536
Cakir T (2013) Evaluation of the effect of earthquake frequency content on seismic behavior of cantilever retaining wall including soil–structure interaction. Soil Dyn Earthq Eng 45:96–111
Dezi F, Carbonari S, Leoni G (2010) Kinematic bending moments in pile foundations. Soil Dyn Earthq Eng 30(3):119–132
Ghosh S, Wilson EL (1969) Analysis of axi-symmetric structures under arbitrary loading, no. 69–10, EERC Report
Han J, Gabr MA (2002) A numerical study of load transfer mechanisms in geosynthetic reinforced and pile supported embankments over soft soil. J Geotech Geoenvironmental Eng ASCE 128(1):44–53
Han J, Bhandari A, Wang F (2011) DEM analysis of stresses and deformations of geogrid-reinforced embankments over piles. Int J Geomech 12(4):340–350
Han GX, Gong QM, Zhou SH (2014) Soil arching in a piled embankment under dynamic load. Int J Geomech 15(6):04014094
IRC:113-2013 Guidelines for the design and construction of geosynthetic reinforced embankments on soft subsoils
IS 1893(Part 1):2016. Criteria for earthquake resistant design of structures
Jose BT, Sridharan A, Abraham BM (1988) A study of geotechnical properties of Cochin marine clays. Mar Georesour Geotechnol 7(3):189–209
Kianoush MR, Ghaemmaghami AR (2011) The effect of earthquake frequency content on the seismic behavior of concrete rectangular liquid tanks using the finite element method incorporating soil–structure interaction. Eng Struct 33(7):2186–2200
Liu HL, Ng CWW, Fei K (2007) Performance of a geogrid-reinforced and pile-supported highway embankment over soft clay: case study. J Geotech Geoenvironmental Eng ASCE 133(12):1483–1493
Liu KW, Rowe RK, Su Q, Liu B, Yang Z (2017) Long-term reinforcement strains for column supported embankments with viscous reinforcement by FEM. Geotext Geomembr 45(4):307–319
Panah AK, Yazdi M, Ghalandarzadeh A (2015) Shaking table tests on soil retaining walls reinforced by polymeric strips. Geotext Geomembr 43(2):148–161
Smith M, Filz G (2007) Axisymmetric numerical modeling of a unit cell in geosynthetic-reinforced, column-supported embankments. Geosynth Int 14(1):13–22
Shen P, Xu C, Han J (2017) Model tests investigating spatial tensile behavior of simulated geosynthetic reinforcement material over rigid supports. J Mater Civ Eng 30(2):04017288
Thach PN, Liu HL, Kong GQ (2013) Evaluation of PCC pile method in mitigating embankment vibrations from a high-speed train. J Geotech Geoenvironmental Eng 139(12):2225–2228
Thach PN, Liu HL, Kong GQ (2013) Vibration analysis of pile-supported embankments under high-speed train passage. Soil Dyn Earthq Eng 55:92–99
Wachman GS, Biolzi L, Labuz JF (2009) Structural behavior of a pile-supported embankment. J Geotech Geoenvironmental Eng 136(1):26–34
Wang C, Wang B, Guo P, Zhou S (2015) Experimental analysis on settlement controlling of geogrid-reinforced pile-raft-supported embankments in high-speed railway. Acta Geotech 10(2):231–242
Wang L, Chen G, Chen S (2015) Experimental study on seismic response of geogrid reinforced rigid retaining walls with saturated backfill sand. Geotext Geomembr 43(1):35–45
Yoo C, Kim SB (2009) Numerical modeling of geosynthetic-encased stone column-reinforced ground. Geosynth Int 16(3):116–126
Yu Y, Bathurst RJ (2017) Modelling of geosynthetic-reinforced column-supported embankments using 2D full-width model and modified unit cell approach. Geotext Geomembr 45(2):103–120
Zhang C, Jiang G, Liu X, Buzzi O (2016) Arching in geogrid-reinforced pile-supported embankments over silty clay of medium compressibility: field data and analytical solution. Comput Geotech 77:11–25
Zhao LS, Zhou WH, Yuen KV (2017) A simplified axisymmetric model for column supported embankment systems. Comput Geotech 92:96–107
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Patel, R.M., Jayalekshmi, B.R., Shivashankar, R. (2020). A Study on the Seismic Behaviour of Embankments with Pile Supports and Basal Geogrid. In: Prashant, A., Sachan, A., Desai, C. (eds) Advances in Computer Methods and Geomechanics . Lecture Notes in Civil Engineering, vol 56. Springer, Singapore. https://doi.org/10.1007/978-981-15-0890-5_22
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DOI: https://doi.org/10.1007/978-981-15-0890-5_22
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