Field Tests on Bearing Characteristics of X-Section Pile Composite Foundation
Publication: Journal of Performance of Constructed Facilities
Volume 26, Issue 2
Abstract
To investigate the behavior of X-section cast-in-place concrete piles (XCC pile), a series of static load tests for piled foundation are conducted on the basis of a soft soil reinforcement engineering for a sewage treatment plant in the north of Nanjing, China. The testing results are presented in load-settlement curves, pile-soil stress ratios, distributions of skin friction (side friction) and axial force, and load-sharing between side resistance and end-bearing capacity. Comparative analysis between an XCC pile and a circular section concrete pile (circular pile) with the same cross-sectional area indicates that the XCC pile with its increased perimeter can improve the vertical-bearing capacity by 20% because of the larger skin friction. Also, the XCC pile shows increasing pile-soil stress ratio and reduces settlement. The existing design standards for traditional piles can be referenced by the XCC pile composite foundation, because the axial force and skin friction distribution are the same as those of the traditional pile. It has been found that pile spacing is an important factor for XCC piles, and the XCC pile should be considered as a special friction pile because of high skin friction sharing. Above all, the XCC pile can significantly increase ground-bearing capacity.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
The authors appreciate the support of the National Nature Science Foundation under Contract Nos. U1134207, 51008115, and 51008116.
References
Burdette, E. G., Ingram, E. E., Tidwell, J. B., Goodpasture, D. W., Deatherage, J. H., and Howard, S. C. (2004). “Behavior of integral abutments supported by steel H-pile.” Transportation Research Record 1892, Transportation Research Board, Washington, DC, 24–28.
Chen, Y. M., Liu, H. L., and Kong, G. Q. (2010). “Development and application of X-section cast-in-situ concrete pile.” Proc., 4th Japan-China Geotechnical Symp.: Recent Developments of Geotech. Eng., Japanese Geotechnical Society, Tokyo, 389–392.
China Academy of Building Research. (2002). “The quality of concrete construction and acceptance.” GB50204-2002, China Building Industry, Beijing.
Ghazavi, M. (2007). “Analysis of kinematic seismic response of tapered piles.” J. Geotech. Geolog. Eng.GGENE3, 25(1), 37–44.
Gifford, A. B., Green, G. E., Buechel, G. J., and Feldman, A. I. (1986). “In situ tests and design of a cylinder pile wall.” Use of In Situ Tests in Geotechnical Engineering (GSP 6), ASCE, New York, 569–587.
Lee, J. H., Salgado, R., and Paik, K. (2003). “Estimation of load capacity of pipe piles in sand based on cone penetration test results.” J. Geotech. Geoenviron. Eng., 129(5), 391–403.JGGEFK
Lei, G. H. (2001). “Behavior of excavated rectangular piles (barrettes) in granitic coprolites.” Ph.D. thesis, Hong Kong Univ. of Science and Technology, Hong Kong.
Lin, T. J. (1998). “Theoretical discussion on modern special-form piles and their mechanical characteristics.” Chinese J. Mech. Practice, 5(1), 1–11.
Liu, H. L., Chu, J., and Deng, A. (2009). “Use of large-diameter, cast-in situ concrete pipe piles for embankment over soft clay.” Can. Geotech. J.CGJOAH, 46(8), 915–927.
Liu, Z. P. (2008). “Research on bearing behavior of X-section concrete pile.” Ph.D. thesis, Hohai Univ., Nanjing, China.
Lu, J. H., and Lu, X. M. (2002). “Field test and study of Y-shaped pile, an unusual type of driven cast-in-situ concrete pile.” J. Zhejiang Water Conservancy Hydropower Coll., 14(4), 40–42.
Ng, C. W. W., Yau, T. L. Y., Li, J. H. M., and Tang, W. H. (2001). “Side resistance of large diameter bored piles socketed into decomposed rocks.” J. Geotech. Geoenviron. Eng.JGGEFK, 127(8), 642–657.
Sakr, M., Naggar, M. H., and Nehdi, M. (2005). “Lateral behavior of composite tapered piles in dense sand.” Proc., ICE-Geotechnical Engineering, Thomas Telford, London, 158(3), 145–157.
Thomas, H., and Mobley, K. (1986). “Special pile foundations for a coastal permafrost site.” Proc., 4th Int. Conf. Cold Regions Engineering, ASCE, New York, 1–10.
Wang, Z. Q. (2009). “Study on the vertical bearing characteristics of cast-in-place X-section concrete pile.” M.S. thesis, Hohai Univ., Nanjing, China.
William, G. D., Thomas, S., Sarah, A., John, D., and Christopher, L. (2010). “Field-measured response of an integral abutment bridge with short steel H-piles.” J. Bridge Eng., 15(1), 32–43.JBENF2
Xu, X. T., Liu, H. L., and Lehane, B. M. (2006). “Pipe pile installation effects in soft clay.” J. Geotech. Eng., 159(4), 285–296.JGENDZ
Yang, J., Tham, L. G., Lee, P. K. K., and Yu, F. (2006). “Observed performance of long steel H-piles jacked into sandy soils.” J. Geotech. Geoenviron. Eng., 132(1), 24–35.JGGEFK
Yuan, J. (2009). “Research on full-scale test for the behavior of X-section pile under lateral load.” M.S. thesis, Hohai Univ., Nanjing, China.
Zhang, Z. G., Lu, T. J., Zhao, Y. C., Wang, J. C., and Li, Y. D. (2004). “Pile-bottom grouting technology for bored cast-in-situ pile foundation.” Proc., GeoSupport Conf. 2004: Drilled Shafts, Micropiling, Deep Mixing, Remedial Methods, and Specialty Foundation Systems (GSP 124), ASCE, Reston, VA, 935–944.
Information & Authors
Information
Published In
Journal of Performance of Constructed Facilities
Volume 26 • Issue 2 • April 2012
Pages: 180 - 189
Copyright
© 2012. American Society of Civil Engineers.
History
Received: Nov 29, 2010
Accepted: May 19, 2011
Published online: May 21, 2011
Published in print: Apr 1, 2012
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.