Numerical Study of Laterally Loaded Piles in Soft Clay Overlying Dense Sand
This paper presents the results of three dimensional finite element analysis of laterally loaded pile groups of configuration 1×1, 2×1 and 3×1, embedded in two-layered soil consisting of soft clay at liquid limit overlying dense sand using Plaxis 3D. Effects of variation in pile length (L) and clay layer thickness (h) on lateral capacity and bending moment profile of pile foundations were evaluated by employing different values of pile length to diameter ratio (L/D) and ratio of clay layer thickness to pile length (h/L) in the analysis. Obtained results indicated that the lateral capacity reduces non-linearly with increase in clay layer thickness. Larger decrease was observed in group piles. A non-dimensional parameter Fx ratio was defined to compare lateral capacity in layered soil to that in dense sand, for which a generalized expression was derived in terms of h/L ratio and number of piles in a group. Group effect on lateral resistance and maximum bending moment was observed to become insignificant for clay layer thickness exceeding 40% of pile length. For a fixed value of clay layer thickness, lateral capacity and bending moment in a single pile increased significantly with increase in pile length only up to an optimum embedment depth in sand layer which was found to be equal to three times pile diameter and 0.21 times pile length for pile with L/D 15. Scale effect on lateral capacity has also been studied and discussed.
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Matlock, Hudson, and Lymon C. Reese. “Generalized Solutions for Laterally Loaded Piles.” Transactions of the American Society of Civil Engineers 127, no. 1 (January 1962): 1220–1248. doi:10.1061/taceat.0008439.
Broms, Bengt B. “Lateral Resistance of Piles in Cohesive Soils.” Journal of the Soil Mechanics and Foundations Division 90, no. 2 (March 1964): 27–63. doi:10.1061/jsfeaq.0000611.
Broms, Bengt B. “Lateral Resistance of Piles in Cohesionless Soils.” Journal of the Soil Mechanics and Foundations Division 90, no. 3 (May 1964): 123–156. doi:10.1061/jsfeaq.0000614.
Broms, Bengt B. “Design of Laterally Loaded Piles.” Journal of the Soil Mechanics and Foundations Division 91, no. 3 (May 1965): 79–99. doi:10.1061/jsfeaq.0000751.
Ashour, Mohamed, and G. Norris. “Modeling Lateral Soil-Pile Response Based on Soil-Pile Interaction.” Journal of Geotechnical and Geoenvironmental Engineering 126, no. 5 (May 2000): 420–428. doi:10.1061/(asce)1090-0241(2000)126:5(420).
Patra, Nihar Ranjan and Pise, Prabhakar Jagannath. “Ultimate Lateral Resistance of Pile Groups in Sand.” Journal of Geotechnical and Geoenvironmental Engineering 127, no.6 (June 2001): 481-487. doi:10.1061/(asce)1090-0241(2001)127:6(481).
Ilyas, T., C. F. Leung, Y. K. Chow, and S. S. Budi. “Centrifuge Model Study of Laterally Loaded Pile Groups in Clay.” Journal of Geotechnical and Geoenvironmental Engineering 130, no. 3 (March 2004): 274–283. doi:10.1061/(asce)1090-0241(2004)130:3(274).
Krishnamoorthy, Agrahara, N. B. S. Rao, and Nitin Rao. "Analysis of group of piles subjected to lateral load." Indian Geotechnical Journal 35, no. 2 (2005): 154-176.
Phanikanth, V.S. and Choudhury, Deepankar. “Single Piles in Cohesionless Soils under Lateral Loads using Elastic Continuum Approach.” Indian Geotechnical Journal 44, no. 3 (September 2014): 225-233. doi:10.1007/s40098-013-0072-4.
Sivapriya, S. V. and Gandhi, S. R. “Experimental and Numerical Study on Pile Behaviour under Lateral Load in Clayey Slope.” Indian Geotechnical Journal, 43, no. 1 (March 2013): 105-114. doi:10.1007/s40098-012-0037-z.
Gouw, Tjie-Liong. “Effects of Pile Lateral Movement, Pile Spacing and Pile Numbers on Laterally Loaded Group Piles.” Proceedings of PILE 2017 International Conference on Advancement of Pile Technology and Pile Case Histories, Bali, Indonesia, (ISBN 978-979-15020-4-7) (September 26-27, 2017).
Abhishek and Sharma, R.K. “A Numerical Study of Granular Pile Anchors Subjected to Uplift Forces in Expansive Soils using Plaxis 3D.” Indian Geotechnical Journal 49, no. 3 (June 2019). doi:10.1007/s40098-018-0333-3.
Choi, Younggyun, Kim, Janghwan and Youn Heejung. “Numerical Analysis of Laterally Loaded piles Affected by Bedrock Depth.” Advances in Civil Engineering (September 2018): 1-9. doi:10.1155/2018/5493579.
Yang, K. and Liang, R. “Numerical Solution of Laterally Loaded Piles in a Two-Layer Soil Profile.” Journal of Geotechnical and Geoenvironmental Engineering 132, no. 11 (November 2006): 1436–1443. doi:10.1061/(asce)1090-0241(2006)132:11(1436).
Li, R. and Gong, J. “Analysis of Laterally Loaded Pile in Layered Soils.” Electronic Journal of Geotechnical Engineering 13, no. J (2008): 1-16.
Hirai, Hiroyoshi. “A Winkler Model Approach for Vertically and Laterally Loaded Piles in Nonhomogeneous Soil.” International Journal for Numerical and Analytical Methods in Geomechanics 36, no. 17 (December 10, 2012): 1869-1897. doi:10.1002/nag.1078.
Ai, Zhi Yong, Feng, Dong Liang and Cheng, Yi Chong. “BEM Analysis of Laterally Loaded Piles in Multi-Layered Transversely Isotropic Soils.” Engineering Analysis with Boundary Elements 37, no. 7-8 (July 2013): 1095–1106. doi:10.1016/j.enganabound.2013.04.009.
Gupta, Bipin K. and Basu, Dipanjan. “Analysis of Laterally Loaded Short and Long Piles in Multilayered Heterogeneous Elastic Soil.” Soils and Foundations 57, no. 1 (February 2017): 92–110. doi:10.1016/j.sandf.2017.01.007.
Gerolymos, Nikos, Giannakos, Spyros and Drosos, Vasileios. “Generalised Failure Envelope for Laterally Loaded piles: Analytical Formulation, Numerical Verification and Experimental Validation.”Geotechnique 70, no. 3 (March 2020): 248-267. doi:10.1680/jgeot.18.P.051.
Gupta, Bipin K. and Basu, Dipanjan. “Soil Resistance for Laterally Loaded Rigid Piles in Multi-layered Elastic Soil.” Geomechanics and Geoengineering 15, no. 1 (January 2020): 10–28. doi:10.1080/17486025.2019.1601267.
Rathod, Deendayal, Muthukkumaran K. and Sitharam T.G. “Response of Laterally Loaded piles in Soft Clay on Sloping Ground.”International Journal of Geotechnical Engineering 10, no. 1 (January 2016): 10-22. doi:10.1179/1939787915y.0000000013.
Rathod, Deendayal, Muthukkumaran K. and Sitharam T.G. “Bahviour of Laterally Loaded piles in Soft Clay on Sloping Ground.” In: Abdoun T., Elfass S. (eds) Soil Dynamics and Soil-Structure Interaction for Resilient Infrastructure. GeoMEast 2017. Sustainable Civil Infrastructures. Springer, Cham. (2018) doi:10.1007/978-3-319-63543-9_13.
Kaur A., Singh H. and Jha J.N. “Study of Lateral Capacity of a Single Pile in Clay Overlying Sand.” In: Singh H., Singh Cheema P.P., Garg P. (eds) Sustainable Development Through Engineering Innovations. Lecture Notes in Civil Engineering, vol 113. Springer, Singapore. (2 March, 2021). doi:10.1007/978-981-15-9554-7_25.
Plaxis 3D Material Models Manual (2012) 34-40.
Bolton, M.D. “The strength and Dilatancy of Sands.” Geotechnique 36, no. 1 (March 1986): 65-78. doi:10.1680/geot.19184.108.40.206.
Obrzud, Rafal F. and Truty, Andrzej. “The Hardening Soil Model - A Practical Guidebook, Z_Soil.PC 100701 Report (Revised October 21, 2018), Edition 2018”.
Kezdi, A. “Handbook of Soil Mechanics.” Elsevier, Amsterdam, (1974).
Prat, M., Bisch, E., Millard, A., Mestat, P. and Cabot, G. “La modelisation des ouvrages.” Hermes, Paris, (1995).
Sridharan, A. “Engineering Behaviour of Fine Grained Soils: A Fundamental Approach.” Indian Geotechnical Journal, (1991): 447-540.
Uncuoğlu, Erdal and Laman, Mustafa. “Lateral Resistance of a Short Rigid Pile in a Two-Layer Cohesionless Soil.” Acta Geotechnica Slovenica 2 (2011): 19-43.
Kim, Byung-Tak and Kim, Young-Su. “Back Analysis for Prediction and Behavior of Laterally Loaded Single Piles in Sand.” KSCE Journal of Civil Engineering, 3, no. 3 (September 1999): 273-288. doi:10.1007/bf02823813.
Reese, Lymon C., and William F. Van Impe. “Single Piles and Pile Groups under Lateral Loading” (December 15, 2010). doi:10.1201/b17499.
Abdrabbo, F.M. and Gaaver, K.E. “Simplified Analysis of Laterally Loaded Pile Groups.” Alexandria Engineering Journal 51, no. 2 (June 2012): 121-127. doi:10.1016/j.aej.2012.05.005.
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