AN EXPERIMENTAL AND NUMERICAL STUDY OF LATERALLY LOADED SMALL GROUPS CFG PILE IN SOFT CLAY
DOI:
https://doi.org/10.55766/sujst-2023-01-e01930Keywords:
CFG pile, Lateral load, Lateral deformation, Soil structure interactionAbstract
The CFG pile comprises composite materials like cement, fly ash, and gravel with adequate water to achieve various grades. It is one of the best techniques to enhance ground bearing capacity in soft and problematic soil. CFG pile has a good amount of lateral resistance capacity. This research study’s main objective is to study a single and small group of casted CFG piles in the laboratory. Also, discussion on the Installation procedure of CFG pile in a confined area, temperature, and curing process. In order to improve the workability of the CFG pile, several laboratory experiments were conducted on various groups of CFG in this experimental analysis. They are made up of a variety of Cement, Fly ash, and gravel particle proportions. Moreover, the research looked at nine pile group combinations (2×1, 2×2, 3×2, 2×3 in square Paton, subjected to a lateral load in a longer direction when in three CFG piles triangular parallel and perpendicular to the base angle of triangular subjected to the lateral load) with a 1.5 D pile spacing values (where D is the pile diameter). In terms of load vs. lateral displacement, load vs. soil resistance, and associated double tangential curved method, the effects of load intensities, group configuration, and Pile are discussed. The improved plots can be used to plan laterally filled CFG piles and equations for group action design. As a result, architecture curves for assessing pile group activity using improvements were developed and implemented in experiments. Results show that the CFG pile was subjected to lateral load and lateral displacement within the permissible limit. The CFG Pile and Pile surrounding soil interaction comparative results were discussed. Suppose the suitable soil elastic modulus is selected. In that case, the numerical, analytical solution and the back load-settlement curve approach can reasonably estimate the lateral deformation concerning Depth and the group efficiency, respectively, according to the relation between numerical and experimental findings.
References
Brown, D.A., Morrison, C., and Resse, L.C. (1988). Lateral load behavior of a pile group in sand. Journal of Geotechnical Engineering, 114 (11):1,261-1,276.
Cao, H.Y. and Liu, Y.F. (2014). Optimum design of cfg pile compound foundation based on numerical simulation method, Applied Mechanics and Materials, 346-350. doi: 10.4028/www.scientific.net/amm.578-579.346.
Doanh, B.P., Q. Luo, L. Zhang, and Y. Yang (2009). Geotechnical centrifuge experiment and force analysis of reinforced cushion with pile cap net structure embankment. Geosynthetics in Civil and Environmental Engineering, 185-190. doi: 10.1007/978-3-540-69313-037.
Dulić, O. and Aladžić, V. (2016) A note on graphical representations in architecture - diagrams over sketches. Contemporary achievements in civil engineering, 835-844. doi: 10.14415/konferencijaGFS.
Fattah, M.Y., Zabar, B.S., and Hassan, H.A. (2016). Experimental analysis of embankment on ordinary and encased stone columns. International Journal of Geomechanics, ASCE, 16(4). DOI 10.1061/(ASCE) GM.1943-5622.0000579 , 04015102.
Fattah, M.Y., Shlash, K.T., and Al-Waily, M.J. (2013). Experimental evaluation of stress concentration ratio of model stone columns strengthened by additives. International Journal of Physical Modelling in Geotechnics, ICE, 13(3):79-98, http://dx.doi.org/10.1680/ ijpmg.12.00006.
Fattah, M.Y., Shlash, Kais T., Al-Waily, and Maki J., (2011). Stress concentration ratio of model stone columns in soft clays. Geotechnical Testing Journal, ASTM, 34(1):61-71. Paper ID GTJ103060Available online at: www.astm.org.
Feng, J., Wu, X.Y. and Zhang, J.H. (2014). Settlement formula of stabilized layer in CFG composite foundation of high-speed railway. Electronic Journal of Geotechnical Engineering, 19(W), 6,867-6,878.
Jiang, A. and Wang, M. (2011). Composite foundation on bearing characteristics and simulation analysis CFG pile for the high speed railway. Applied Mechanics and Materials, 3,827-3,831. doi: 10.4028/www.scientific.net/AMM.71-78.3827.
Jiang, D.P. and Wang, B.L. (2012). An Analysis on Failure Pattern of CFG Pile-Net Composite Foundation of High-Speed Railway, Advanced Materials Research, 1,357-1,362. doi: 10.4028/www.scientific.net/amr.594-597.1357.
Jiang, Y., Han, J., and Zheng, G. (2014). Numerical analysis of a pile-slab-supported railway embankment. Acta Geotechnica, 9(3):499-511 doi: 10.1007/s11440-013-0285-9.
Jin, Y., Wang, X., and Chen, X. (2011) Icctp 2011 © asce 2011 346, 346-359.
Kwa, S.F., Kolosov, E.S., and Fattah, M.Y., (2018). Ground improvement using stone column construction encased with geogrid. Construction of Unique Buildings and Structures, 3(66):49-59.
Khari, M., Kassim, K.A., and Adnan, A. (2013) An experimental study on pile spacing effects under lateral loading in sand. The Scientific World Journal, 2013. doi: 10.1155/2013/734292.
Niu, X., Yangping Yao, Yanfang Sun, Yuhao He, and Haiqing Zhang (2018). 3D Numerical Analysis of Synergetic Interaction between High-Rise Building Basement and CFG Piles Foundation. Applied Sciences, 8(11):2040. doi: 10.3390/app8112040.
Pile, C.S. (2014). Experimental Study of Dynamic Characteristics on Composite Foundation with CFG Long Pile and Rammed., (March), 1-12.
Rao, S.N., Ramakrishan, V.G.S.T., and Rao, M.B. (1998). Influence of Rigidity on Laterally Loaded Pile Groups in. Journal of Geotechnical and Geoenvironmental Engineering, 549(JUNE), 542-549.
Reese, L.C., Cox, W.R., and Koop, F.D. (1974). Analysis of laterally loaded piles in sand. Proceedings of VI Annual Offshore Technology Conference, Houston, Texas, USA, 2 (OTC 2080), 473-485.
Shen, Y. and Wang, H. (2016). Optimization Design on CFG-Pile Foundation with Different Cushion Thickness in Beijing-Shanghai High-Speed Railway. Transportation Infrastructure Geotechnology, 3(1):3-20. doi: 10.1007/s40515-015-0026-7.
Sivapriya, S.V. and Gandhi, S.R. (2013). Experimental and Numerical Study on Pile Behaviour Under Lateral Load in Clayey Slope. Indian Geotechnical Journal, 43(1):105-114. doi: 10.1007/s40098-012-0037-z.
Solanki, C.H., Umravia, N.B., and Solanki, C.H. (2020). Experimental and Numerical study Behaviors on Single Cement Flyash Gravel pile under the combined effect of axial compression and Lateral load. IOP Conference Series: Materials Science and Engineering, 814(1). doi: 10.1088/1757-899X/814/1/012002.
Tandel, Y.K., Solanki, C.H., and Desai, A.K. (2013). Laboratory experimental analysis on encapsulated stone column. Archives of Civil Engineering, 59(3):359-379. doi: 10.2478/ace-2013-0020.
Uge, B.U. (2020). CFG Pile Composite Foundation : Its Engineering Applications and Research Advances, 2020.
Umravia, N.B. C.H. Solanki, Hojifa Mustafa, and Mala Arjun Ashutosh. (2020). Evaluation of Ultimate Behavior of Cement Fly Ash Gravel Pile in Soft Silty Clay by Lateral Loading Test, 6(11):423-427.
Xiao, D., G.L. Jiang, D. Liao, Y.F. Hu, and X.F. Liu (2018). Influence of cement-fly ash-gravel pile-supported approach embankment on abutment piles in soft ground. Journal of Rock Mechanics and Geotechnical Engineering, 10(5):977-985. doi: 10.1016/j.jrmge.2018.06.001.
You, Shuang, Xiaohui Cheng, Hongxian Guo, and Zhiquan Yao (2016). Experimental study on structural response of CFG energy piles. Applied Thermal Engineering, 96:640-651. doi: 10.1016/j.applthermaleng.2015.11.127.
Zeng, J., Ji-wen Zhang, Yong-ming Tu, and Xiao-dong Tong (2009). In-Situ test of pile-soil stress ratio of cfg pile-net composite foundation in beijing-shanghai high-speed railway. 2009 Second International Conference on Intelligent Computation Technology and Automation, 638-640. doi: 10.1109/ICICTA.2009.619.
Zhang, C., Guanlu Jiang, Xianfeng Liu, and Zhimeng Wang (2015). Deformation performance of cement-fly ash-gravel pile-supported embankments over silty clay of medium compressibility: a case study. Arabian Journal of Geosciences, 8(7):4,495-4,507. doi: 10.1007/s12517-014-1559-8.
Zhang, C. lei, Guan-lu Jiang, Xian-feng Liu, and Zhi-meng Wang (2015a). Lateral displacement of silty clay under cement-fly ash-gravel pile-supported embankments: Analytical consideration and field evidence. Journal of Central South University, 22(4):1,477-1,489. doi: 10.1007/s11771-015-2665-9.
Zhang, C. lei, Guan-lu Jiang, Xian-feng Liu, and Zhi-meng Wang (2015b). Lateral displacement of silty clay under cement-fly ash-gravel pile-supported embankments: Analytical consideration and field evidence. Journal of Central South University, 22(4):1,477-1,489. doi: 10.1007/s11771-015-2665-9.
Zhang, D., Yi Zhang, Chul Woo Kim, Yuan Meng, Akhil Garg, Ankit Garg, and Kun Fang (2018). Effectiveness of CFG pile-slab structure on soft soil for supporting high-speed railway embankment. Soils and Foundations, 58(6):1,458-1475. doi: 10.1016/j.sandf.2018.08.007.
Zhang, D.B., Y. Zhang, T. Cheng, and J.Y. Yuan (2017) Soft foundation strengthening effect and structural optimization of a new cement fly-ash and gravel pile-slab structure. International Journal of Engineering, 30(7):955-963. doi: 10.5829/ije.2017.30.07a.04.
Zhang, Y., Andersen, K.H. and Tedesco, G. (2016) Ultimate bearing capacity of laterally loaded piles in clay - Some practical considerations. Marine Structures, 50:260-275. doi: 10.1016/j.marstruc.2016.09.002.
Zheng, G., Yan Jiang, Jie Han, and Yuan-Feng Liu (2011a). Performance of cement-fly ash-gravel pile-supported high-speed railway embankments over soft marine clay. Marine Georesources and Geotechnology, 29(2):145-161. doi: 10.1080/1064119X.2010.532700.
Zheng, G., Yan Jiang, Jie Han, and Yuan-Feng Liu (2011b). Performance of cement-fly ash-gravel pile-supported high-speed railway embankments over soft marine clay. Marine Georesources and Geotechnology, 29(2):145-161. doi: 10.1080/1064119X.2010.532700.
Zhenxing, R., Hong Xiao, Xiao Guo, and Luwei Huang (2015). Analysis of the Effect of Groundwater Exploitation on High-Speed Railway Pile-Slab Structure Subgrade. The Open Mechanical Engineering Journal, 9(1):455-459. doi: 10.2174/1874155x01509010455.
Zhuang, Y. and Cui, X. (2015) Reinforced piled embankment for a high-speed railway over soft soil: A numerical and analytical investigation. Acta Geotechnica Slovenica, 12(2):57-65.
