Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30124
Numerical Investigation on the Effects of Deep Excavation on Adjacent Pile Groups Subjected to Inclined Loading

Authors: Ashkan Shafee, Ahmad Fahimifar

Abstract:

There is a growing demand for construction of high-rise buildings and infrastructures in large cities, which sometimes require deep excavations in the vicinity of pile foundations. In this study, a two-dimensional finite element analysis is used to gain insight into the response of pile groups adjacent to deep excavations in sand. The numerical code was verified by available experimental works, and a parametric study was performed on different working load combinations, excavation depth and supporting system. The results show that the simple two-dimensional plane strain model can accurately simulate the excavation induced changes on adjacent pile groups. It was found that further excavation than pile toe level and also inclined loading on adjacent pile group can severely affect the serviceability of the foundation.

Keywords: Deep excavation, pile group, inclined loading, lateral deformation.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1317426

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 386

References:


[1] W. D. Goh aTC, Wong KS, Teh CI, “Pile responce adjacent to braced excavation,” J. Geotech. geoenvironmental Eng., 2003.
[2] H. I. Finno RJ, Lawrence SA, Allawh NF, “Analysis of Performance of Pile Groups Adjacent to Deep Excavations,” J. Geotech. Eng., 1991.
[3] D. E. L. Ong, C. F. Leung, and Y. K. Chow, “Behavior of Pile Groups Subject to Excavation-Induced Soil Movement in Very Soft Clay,” J. Geotech. Geoenvironmental Eng., vol. 135, no. 10, pp. 1462–1474, 2009.
[4] C. F. L. K. L. R. F. S. and Y. K. Chow, “Behavior of pile subject to excavation-induced soil movement,” J. Geotech. Geoenvironmental Eng., vol. 126, no. 11, pp. 947–954, 2000.
[5] 2 and R. F. Shen C. F. Leung, 1 Y. K. Chow, “Behavior Of Pile Subject To Excavation-Induced Soil Movement,” J. Geotech. Geoenvironmental Eng., no. November, 2000.
[6] C. F. Leung, D. E. Ong, and Y. K. Chow, “Pile Behavior Due to Excavation-Induced Soil Movement in Clay. II: Collapsed Wall,” J. Geotech. Geoenvironmental Eng., vol. 132, no. 1, pp. 45–53, 2006.
[7] J. Chai, S. Shen, W. Ding, H. Zhu, and J. Carter, “Numerical investigation of the failure of a building in Shanghai, China,” Comput. Geotech., vol. 55, no. 7, pp. 482–493, 2014.
[8] D. S. Liyanapathirana and R. Nishanthan, “Influence of deep excavation induced ground movements on adjacent piles,” Tunn. Undergr. Sp. Technol., vol. 52, pp. 168–181, 2016.
[9] M. Shakeel and C. W. W. Ng, “Settlement and load transfer mechanism of a pile group adjacent to a deep excavation in soft clay,” Comput. Geotech., no. December 2016, pp. 0–1, 2017.
[10] and C. T. G. M.R. Karim, S.-C.R. Lo, “Behaviour of piles subjected to passive loading due to embankment construction,” Can. Geotech. J., 2014.
[11] P. D. 1. R. J. M. and F. A. F. V. T. Mandy Korff, “Pile-Soil Interaction and Settlement Effects Induced by Deep Excavations,” J. Geotech. Geoenvironmental Eng., 2016.
[12] R. Zhang, J. Zheng, H. Pu, and L. Zhang, “Analysis of excavation-induced responses of loaded pile foundations considering unloading effect,” Tunn. Undergr. Sp. Technol., vol. 26, no. 2, pp. 320–335, 2011.
[13] M. El Sawwaf, “Experimental and Numerical Study of Eccentrically Loaded Strip Footings Resting on Reinforced Sand,” J. Geotech. Geoenvironmental Eng., vol. 135, no. 10, pp. 1509–1518, 2009.
[14] E. Conte, A. Troncone, and M. Vena, “Behaviour of flexible piles subjected to inclined loads,” Comput. Geotech., vol. 69, pp. 199–209, 2015.