Practical Method for the Pile Composite Ground under Flexible Foundation Based on Super-Substructure Interaction

Abstract:

The technology of the composite ground under a flexible foundation have been widely used in transportation, water conservancy and other departments, yet its theory of characterizing the behavior of the composite ground needs to be further researched. A simplified analytical model is presented, considering the above four parts which includes the flexible foundation, the cushion, the composite ground, and the underlying soils as an interactive system, allowing for the relative movement between piles and soils, and assuming different settlement of foundation soil at the same elevation. The force equilibriums of a typical element are established. And then, according to the compatibility of stress and deformation on the interfaces between these four components, the formulas on settlement and stress ratio of pile-soil, which is used to characterize the behavior of the composite ground, are derived.

• Periodical: Advanced Materials Research (Volumes 250-253)
• Pages: 2575-2582
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.250-253.2575
• Online since: May 2011
• Authors: Yong Fei Peng, Jian Lin Yu, Xiao Nan Gong, Wen Zhi Lv
• Keywords: Analytic Model, Flexible Foundation, Ineractions, Pile Composite Ground

References

[1] Alamgir, M., Mjura, N., and Poorooshasb, H.B. "Deformation analysis of soft ground reinforced by columnar inclusions. Computers and Geotechnics, 1996, (4): 267-290.

DOI: 10.1016/0266-352x(95)00034-8

[2] Allersma, H.G.B. and Bartsch, M. Centrifuge Tests on Methods Stabilizing Embankments. ASCE Geo Jordan, 2004,311-322.

DOI: 10.1061/40735(143)26

[3] Chew, S.H., Phoon, H.L., and Loke, K.H. Geotextile Reinforced Piled Embankment for Highway Bridges. ACSE Transportation Engineering, 2004, 438-443.

DOI: 10.1061/40730(144)82

[4] Gong, X.N. Theory of Composite Foundations and Engineering Applications. Beijing:China Architecture and Building Press. 2002 (in Chinese).

[5] Li, H.F., Wen, X.G., and Gong, X.N. Analytical-function for compressive deformation of stabilized layer in composite foundation under load of embankment. China Civil Engineering Journal, 2005, 38(3):77-80(in Chinese).

[6] Liu, J.F.. Analysis on pile-soil stress ratio for composite ground under embankment. Chinese Journal of Rock Mechanics and Engineering, 2003, 22(4):674-677 (in Chinese).

[7] Mankbadi, R. and Mansfield, J. "Ground Improvement Utilizing Vibro-Concrete Columns." ASCE Geo-Support, 2004, 1-12.

DOI: 10.1061/40713(2004)55

[8] Miki, H. and Nozu, M. Design and Numerical Analysis of Road Embankment with Low Improvement Ratio Deep Mixing Method. ASCE Geotechnical Engineering for Transportation Projects, 2004, 1395-1402.

DOI: 10.1061/40744(154)129

[9] Randolph, M.F., and Wroth, C.P.. Analysis of deformation of vertically loaded piles. Journal of the Geotechnical Engineering Division, ASCE, 1978, 104: 1465–1488.

DOI: 10.1061/ajgeb6.0000729

[10] R.P. Chen, Y.M. Chen, J. Han, et al.. A theoretical solution for pile-supported embankments on soft soils under one-dimensional compression. Can. Geotech., 2008, 45:611-623.

DOI: 10.1139/t08-003

[11] Shi, J.Y. and Zou, J. (2002). "Study on calculative theory of settlement of composite ground reinforced by deep-mixing pile group." Rock and Soil Mechanics, 23(3):309-315(in Chinese).

[12] Terzaghi, K. 1943. Theoretical soil mechanics. John Wiley & Sons, New York.

[13] Wong, K.S., and Teh, C.T. 1995. Negative skin friction on piles in layered soil deposits. Journal of Geotechnical EngineeringASCE,121: 457–465.

DOI: 10.1061/(ASCE)0733-9410(1995)121:6(457)