Engineering Geology

Engineering Geology

Evaluation of Piled Raft Behavior based on the Taguchi Method subjected to Combination of Vertical and Horizontal Loads

Authors
Yasaman Salahshour
Alireza Ardakani
Imam Khomeini International University
10.18869/acadpub.jeg.11.3.183
Abstract
The results of an ongoing FEM parametric study are presented regarding the dependence of the resulting piled raft behavior under lateral load and combination of loads on pile diameter, pile length, arrangement of piles and raft thickness. Taguchi method with Analysis of Variance (ANOVA) was employed to calculate the contribution ratio of these factors on the lateral displacement of piled raft. The obtained results of this study show that the pile diameter is an effective factor in horizontal deformation of the piled raft under pure horizontal load. However, in the case of load combinations, the pile length has the highest participation ratio in reducing the horizontal deformations.




Keywords
piled raft
optimum design
vertical load
lateral load
Taguchi method
1. Poulos H. G., "Piled raft foundations: design and applications", Geotechnique 51.2 (2001) 95-113. 2. Kim K. N., Lee S. H., Kim K. S., Chung C. K., Kim M. M., Lee H. S., "Optimal pile arrangement for minimizing differential settlements in piled raft foundations", Computers and Geotechnics 28, no. 4 (2001) 235-253. 3. Katzenbach R., Bachmann G., Boled-Mekasha G., Ramm H., "Combined pile raft foundations (CPRF): An appropriate solution for the foundations of high-rise buildings", Sloak Journal of Civil Engineering (SJCE) (2005) 19-29. 4. Nguyen D. D., Kim D. S., Jo S. B., "Settlement of piled rafts with different pile arrangement schemes via centrifuge tests", Journal of Geotechnical and Geoenvironmental Engineering 139.10 (2013) 1690-1698. 5. Brown D. A., Morrison C., Reese L. C., "Lateral load behavior of pile group in sand", Journal of Geotechnical Engineering 114.11 (1988) 1261-1276. 6. Rollins K. M., Peterson K. T., Weaver T. J., "Lateral load behavior of full-scale pile group in clay", Journal of geotechnical and geoenvironmental engineering 124.6 (1998) 468-478. 7. Comodromos E. M., Pitilakis K. D., "Response evaluation for horizontally loaded fixed‐head pile groups using 3‐D non‐linear analysis, "International Journal for Numerical and Analytical Methods in Geomechanics 29.6 (2005) 597-625. 8. Kim B. T., Yoon G. L., "Laboratory modeling of laterally loaded pile groups in sand", KSCE Journal of Civil Engineering 15.1 (2011) 65-75. 9. Meyerhof G. G., Yalcin A. S., "Pile capacity for eccentric inclined load in clay", Canadian Geotechnical Journal 21.3 (1984) 389-396. 10. Davisson M. T., Robinson K. E., "Bending and buckling of partially embedded piles", Proceeding of the 6th International Conference on Soil Mechanics and Foundation Engineering. Montreal; (1965) 243-246. 11. Goryunov B. F., "Analysis of piles subjected to the combined action of vertical and horizontal loads (discussion)", Soil Mechanics and Foundation Engineering 10.1 (1973) 10-13. 12. Zhang L. M., McVay M. C., Han S. J., Lai P. W., Gardner R., "Effects of dead loads on the lateral response of battered pile groups" Canadian Geotechnical Journal 39, No. 3 (2002) 561-575. 13. Hussien M. N., Tobita T., Iai S., Rollins K. M., "Vertical loads effect on the lateral pile group resistance in sand", Geomechanics and Geoengineering 7, no. 4 (2012) 263-282. 14. Hussien M. N., Tobita T., Iai S., Karray M., "On the influence of vertical loads on the lateral response of pile foundation." Computers and Geotechnics 55 (2014) 392-403. 15. Yazdani M., Ghahremani P., "Determination of bearing capacity for piles using systematic numerical analyses of pile load testing based on Taguchi method", Journal of Sharif Civil Engineering 2.28, No. 4 (2012) 39-51. 16. Brinkgreve R. B. J., Broere W., "Plaxis 3D Foundation Version 1.5 user’s manual", Delft University of Technology and PLAXIS bv?, The Netherlands (2006). 17. Nguyen D. D. C., Kim D. S., Jo S. B., "Parametric study for optimal design of large piled raft foundations on sand", Computers and Geotechnics 55 (2014) 14-26. 18. Roy R. K., "Design of experiments using the Taguchi approach: 16 steps to product and process improvement", John Wiley & Sons (2001). 19. Anagnostopoulos C., Georgiadis, "A simple analysis of piled raft foundations", Geotechnical Engineering 29, No. 1 (1998).