Dynamic Response of Pile Groups under Vertical Forces in Saturated Soil

Abstract:

Based on Biot’s wave propagation equation and boundary conditions, this paper builds up pile group and soil system used for calculation in 3 dimension models, though mass conservative and motion equation. The results of ground surface movement are obtained under the effect of vertical dynamic force though Newmark direct integration. Compared with the measured results, the numerical outcomes conform accurately. The calculating results show that vibration of ground surface can be affected by several parameters such as soils’ possion ratio, permeability coefficient, different types of pile groups and so on. Different factors have different effects on ground’s surface vibration in both far field and near field.

• Periodical: Advanced Materials Research (Volumes 261-263)
• Pages: 1499-1504
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.261-263.1499
• Online since: May 2011
• Authors: Yuan Yi Zhao, Zhou Hong Tao
• Keywords: Numerical Simulation, Response Characteristic, TEM, Unfavorable Geological Conditions

References

[1] Biot M A. The theory of propagation of elastic waves in a fluid-saturated porous solid: I Low-frequency range. J.Acoust.Soc.Am, 1956a,28:168-178

DOI: 10.1121/1.1908239

[2] Biot M A. The theory of propagation of elastic waves in a fluid-saturated porous solid: I Higher-frequency range. J.Acoust. Soc. Am, 1956b,28:179-191

DOI: 10.1121/1.1908241

[3] HUANG Mao-song, WU Zhi-ming, REN Qing, Lateral vibration of pile groups in layered soil[J]. Chinese Journal of Geotechnical Engineering, 2007, 29(1):32-38

[4] ZHOU Xiang-lian, ZHOU Guang-ming，WANG Jian-hua. Dynamic response of pile group in saturated soil subjected to horizontal loads[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24 (8): 1433-1438

[5] JIANG Tong, CHENG Chang-shu. Environmental vibration induced by elevated railway traffic using thin- layer method[J]. Jou rnal of Vibration Engineering 2007, 20 (6): 623-628.

[6] ZHOU Hai-lin, LIU Bao-cheng. Experiment and FEM analysis of bridge pier with high rise pile cap under dynamic train loading. 2000, 67 (3): 36-40.

[7] KUAI Xing-cheng, TIAN Jian- hua. Finite element analysis of dynamic impedances of pile groups with embedded caps [J]. Journal of Hunan University, 2004, 31 (4): 55-59.

[8] XIONG Hui , LU Xi-lin, 　HUANG Liang. A dynamic FEM analysis considering the SSI effect on 3D pile-supported structures[J]. Chinese Journal of Computational Mechanics, 2007, 24 (6): 756-762.

[9] FANG Ying-guan, SUN Jun. Earthquake response analysis of platform-pile group-water-soil system [J]. China Civil Engineering Journal 1998, 31 (5): 56-64.