Effects of Axial Loads and Soil Density on Pile Group Subjected to Triangular Soil Movement
Laboratory tests have been carried out to investigate the response of 2x2 pile group subjected to triangular soil movement. The pile group was instrumented with displacement and tilting devices at the pile cap and strain gauges on two piles of the group. In this paper, results from four model tests were presented to study the effects of axial loads and soil density on the lateral behavior of piles. The responses in terms of bending moment, shear force, soil pressure, deflection, and rotation of piles were compared. Test results indicate that increasing the soil strength could increase the measured moment, shear, soil pressure, and pile deformations. Most importantly, adding loads to the pile cap induces additional moment to the head of front-pile row unlike the back-pile row which was influenced insignificantly.
[1] D. E. L Ong, C. F. Leung, and Y. K. Chow, “Piles subject to excavation-induced soil movement in clay,” in Proc. 13th Annu. European Conf. on Soil Mechanics and Geotechnical Engineering, Prague, 2003.
[2] N. Kalteziotis, H. Zervogiannis, R. Frank, G. Seve, and J. -C. Berche, “Experimental study of landslide stabilization by large diameter piles,” in Proc. the International Symposium on Geotechnical Engineering of Hard Soils – Soft Rocks, Athens. 1993.
[3] A. Feddema, J. Breedeveld, and A. F. Tol, “Lateral loading of pile foundations due to embankment construction,” in Proc. 7th European Conference on Numerical Methods in Geotechnical Engineering (NUMGE 2010), Trondheim, 2010.
[4] H. G. Poulos, L. T. Chen, and T. S. Hull, “Model tests on single piles subjected to lateral soil movement,” Soils and Foundation, Vol. 35, No. 4, pp. 85-92. 1995.
[5] J. L. Pan, A. T. C. Goh, K. S. Wong, and C. I. The, “Model tests on single piles in soft clay,” Canadian Geotechnical Journal, Vol. 37, No. 4, pp. 890-897. 2000.
[6] D. J. White, M. J. Thompson, M. T. Suleiman, and V. R. Schaefer, “Behavior of slender piles subject to free-field lateral soil movement,” J. of Geotechnical and Geoenvironmental Engineering, ASCE, Vol. 134, No. 4, pp. 428-436. 2008.
[7] W. Guo, and H. Y. Qin, “Thrust and bending moment of rigid piles subjected to moving soil,” Canadian Geotechnical Journal, Vol. 47, No. 2, pp. 180-196. 2010.
[8] M. T. Suleiman, L. Ni, J. D. Helm, and A. Raich, “Soil-pile interaction for a small diameter pile embedded in granular soil subjected to passive loading,” J. of Geotechnical and Geoenvironmental Engineering, ASCE, Vol. 140, No. 5, pp. 04014002. 2014.
[9] L. T. Chen, and H. G. Poulos, “Piles subjected to lateral soil movements,” J. of Geotechnical and Geoenvironmental Engineering, Vol. 123, No. 9, pp. 802-811. 1997.
[10] M. F. Bransby, and S. M. Springman, “Centrifuge modelling of pile groups adjacent to surcharge loads,” Soils and Foundations, Vol. 37, No. 2, pp. 39-49. 1997.
[11] C. F. Leung, J. K. Lim, R. F. Shen, and Y. K. Chow, “Behavior of pile groups subject to excavation-induced soil movement,” J. of Geotechnical and Geoenvironmental engineering, ASCE, Vol. 129, No. 1, pp. 58–65. 2003.
[12] L. F. Miao, A. T. C. Goh, K. S. Wong, and C. I. The, “Ultimate soil pressure for pile groups in soft clay subjected to lateral soil movements,” Deep Foundation Institute Journal, Vol. 2, No. 1, pp. 42-51. 2008.
[13] H. Ghee, “The Behavior of Axially Loaded Piles Subjected to Lateral Soil Movements,” Doctorate Thesis, Griffith University, Australia, pp. 431. 2009.
[1] D. E. L Ong, C. F. Leung, and Y. K. Chow, “Piles subject to excavation-induced soil movement in clay,” in Proc. 13th Annu. European Conf. on Soil Mechanics and Geotechnical Engineering, Prague, 2003.
[2] N. Kalteziotis, H. Zervogiannis, R. Frank, G. Seve, and J. -C. Berche, “Experimental study of landslide stabilization by large diameter piles,” in Proc. the International Symposium on Geotechnical Engineering of Hard Soils – Soft Rocks, Athens. 1993.
[3] A. Feddema, J. Breedeveld, and A. F. Tol, “Lateral loading of pile foundations due to embankment construction,” in Proc. 7th European Conference on Numerical Methods in Geotechnical Engineering (NUMGE 2010), Trondheim, 2010.
[4] H. G. Poulos, L. T. Chen, and T. S. Hull, “Model tests on single piles subjected to lateral soil movement,” Soils and Foundation, Vol. 35, No. 4, pp. 85-92. 1995.
[5] J. L. Pan, A. T. C. Goh, K. S. Wong, and C. I. The, “Model tests on single piles in soft clay,” Canadian Geotechnical Journal, Vol. 37, No. 4, pp. 890-897. 2000.
[6] D. J. White, M. J. Thompson, M. T. Suleiman, and V. R. Schaefer, “Behavior of slender piles subject to free-field lateral soil movement,” J. of Geotechnical and Geoenvironmental Engineering, ASCE, Vol. 134, No. 4, pp. 428-436. 2008.
[7] W. Guo, and H. Y. Qin, “Thrust and bending moment of rigid piles subjected to moving soil,” Canadian Geotechnical Journal, Vol. 47, No. 2, pp. 180-196. 2010.
[8] M. T. Suleiman, L. Ni, J. D. Helm, and A. Raich, “Soil-pile interaction for a small diameter pile embedded in granular soil subjected to passive loading,” J. of Geotechnical and Geoenvironmental Engineering, ASCE, Vol. 140, No. 5, pp. 04014002. 2014.
[9] L. T. Chen, and H. G. Poulos, “Piles subjected to lateral soil movements,” J. of Geotechnical and Geoenvironmental Engineering, Vol. 123, No. 9, pp. 802-811. 1997.
[10] M. F. Bransby, and S. M. Springman, “Centrifuge modelling of pile groups adjacent to surcharge loads,” Soils and Foundations, Vol. 37, No. 2, pp. 39-49. 1997.
[11] C. F. Leung, J. K. Lim, R. F. Shen, and Y. K. Chow, “Behavior of pile groups subject to excavation-induced soil movement,” J. of Geotechnical and Geoenvironmental engineering, ASCE, Vol. 129, No. 1, pp. 58–65. 2003.
[12] L. F. Miao, A. T. C. Goh, K. S. Wong, and C. I. The, “Ultimate soil pressure for pile groups in soft clay subjected to lateral soil movements,” Deep Foundation Institute Journal, Vol. 2, No. 1, pp. 42-51. 2008.
[13] H. Ghee, “The Behavior of Axially Loaded Piles Subjected to Lateral Soil Movements,” Doctorate Thesis, Griffith University, Australia, pp. 431. 2009.
@article{"International Journal of Earth, Energy and Environmental Sciences:74864", author = "Ihsan Al-Abboodi and Tahsin Toma-Sabbagh", title = "Effects of Axial Loads and Soil Density on Pile Group Subjected to Triangular Soil Movement", abstract = "Laboratory tests have been carried out to investigate the response of 2x2 pile group subjected to triangular soil movement. The pile group was instrumented with displacement and tilting devices at the pile cap and strain gauges on two piles of the group. In this paper, results from four model tests were presented to study the effects of axial loads and soil density on the lateral behavior of piles. The responses in terms of bending moment, shear force, soil pressure, deflection, and rotation of piles were compared. Test results indicate that increasing the soil strength could increase the measured moment, shear, soil pressure, and pile deformations. Most importantly, adding loads to the pile cap induces additional moment to the head of front-pile row unlike the back-pile row which was influenced insignificantly.
", keywords = "Pile group, passive piles, lateral soil movement, soil density, axial loads.", volume = "11", number = "3", pages = "215-6", }
