Characteristics of Bored Piles Installed Through Jet Grout Layer
Publication: Journal of Performance of Constructed Facilities
Volume 16, Issue 4
Abstract
When bored piles are installed through a jet grout layer, significant interaction may take place between the piles and the jet grout. Field load tests have indicated that significant enhancement of the pile shaft capacity and axial stiffness was possible for both compression and tension piles. The influence of the jet grout layer was more pronounced for piles under compression loading compared with uplift loading. The effectiveness of the jet grout in transmitting load via shearing action was dependent on the thickness of the grouted zone, the strength of the interlocks between individual jet grout columns forming the grout slab, as well as the interface bond between the pile shafts and the grout. No apparent adverse effect on the performance of permanent foundations was envisaged as a result of the presence of the jet grout layer. However, interpretation of pile behavior from load tests was complicated by the interaction between the test pile and jet grout, resulting in overprediction of pile capacity and axial stiffness. The significance of the interaction has to be carefully evaluated so that a correct interpretation of the true pile capacity and axial stiffness can be made.
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References
Berry, G. L., Shirlaw, J. N., Hayata, K., and Tan, S. H. (1987). “A review of grouting techniques utilized for bored tunnelling with emphasis on the jet grouting method.” Proc., Singapore Mass Rapid Transit Conf., MRTC, Singapore, 207–214.
Bjerrum, L. (1972). “Embankments on soft ground.” Proc., Spec. Conf. on Performance of Earth and Earth-Supported Structures, Vol. 2, ASCE, New York, 1–54.
Chin, F. K. (1970). “Estimation of the ultimate load of pile tests not carried to failure.” Proc., 2nd Southeast Asian Conf. on Soil Engineering, SEAGS, Bangkok, 81–90.
Chin, F. K. (1972). “The inverse slope as a prediction of ultimate bearing capacity of piles.” Proc., 3rd Southeast Asian Conf. on Soil Engineering, SEAGS, Bangkok, 83–91.
Chin, F. K., and Vail, A. J. (1973). “Behavior of piles in alluvium.” Proc., 8th Int. Conf. on Soil Mechanics and Foundation Engineering, Vol. 2, Part 1, ISSMPE, Cambridge, 47–52.
Fleming, W. G. K. (1992). Proc., Int. Conf. on Piling: European Practice and Worldwide Trends, Thomas Telford, London, 302–303.
Ho, C. E. (1995). “An instrumented jet grouting trial in soft marine clay.” Verification of Geotechnical Grouting, Geotechnical Special Publication No. 57, M. J. Byle and R. H. Borden, eds., ASCE, Reston, Va., 101–115.
Ho, C. E. (1998). “A jet grout stabilized excavation beneath an existing building.” Grouts and Grouting, Geotechnical Special Publication No. 80, L. Johnson and D. Berry, eds., ASCE, Reston, Va., 1–15.
Ho, C. E. (2001). “Ground interaction effects in uplift pile load tests.” Proc., 54th Canadian Geotechnical Conf., CGS, Ottawa, 714–721.
Ho, C. E., and Lim, C. H. (1994). “Bearing capacity and settlement of slurry bored piles in Singapore old alluvium.” Proc., 3rd Int. Conf. on Deep Foundation Practice, CI Premier, Singapore, 125–132.
Ho, C. E., Tan, C. G., and Lim, C. H. (1998a). “Fan shaped jet grout strut for improved excavation support.” Proc., 2nd Int. Conf. on Ground Improvement Techniques, CI Premier, Singapore, 605–612.
Ho, C. E., Lim, C. H., and Tan, C. G. (1998b). “Large diameter slurry bored piles in tension.” Proc., 3rd Int. Geot. Sem. on Deep Foundations on Bored and Auger Piles, Ghent, Belgium, W. F. Van Impe and W. Haegeman, eds., Balkema, The Netherlands, 129–136.
Ho, C. E., Tan, C. G., and Lim, C. H. (2000). “Compression behavior of instrumented bored pile installed through deep soft clay.” Proc., 53rd Canadian Geotechnical Conf., CGS, Ottawa, 917–924.
Horvath, R. G., and Kenney, T. C. (1979). “Shaft resistance of rock-socketed drilled piers.” Proc., Symp. on Deep Foundations, ASCE, New York, 182–214.
Jayatharan, K., and Soh, K. K. (1997). “Excessive movement of retaining structures in Singapore soft marine clay.” Proc., Int. Conf. on Foundation Failure, IStructE, Singapore, 217–228.
Kulhawy, F. H., and Phoon, K. K. (1993). “Drilled shaft side resistance in clay soil to rock.” Design and Performance of Deep Foundations: Piles and Piers in Soil and Soft Rock, Geotechnical Special Publication No. 38, ASCE, New York, 172–183.
Lee, Y., Chew, S. H., Lee, F. H., Yong, K. Y., and Yogarajah, I. (1997). “Strength of jet grouted Singapore marine clay.” Proc., Int. Conf. on Ground Improvement Techniques, CI Premier, Singapore, 297–304.
Leung, C. F.(1996). “Case studies of rock-socketed piles.” Geotechnical Engineering J., 27(1), 51–67.
Liang, K. M., Ganeshan, V., and Oei, T. B. R. (1993). “Soil improvement for reconstruction of an open channel in Singapore marine clay.” Proc., 11th Southeast Asian Geotechnical Conf., SEAGS, Bangkok, 381–386.
Littlechild, B., Hill. S. J., Plumbridge, G. D., and Lee, S. C. (2000). “Load capacity of foundations on rock.” New Technological and Design Developments in Deep Foundations. Geotechnical Special Publication No. 100, N. Dennis, R. Castelli, and M. O’Neil, eds., ASCE, Reston, Va., 140–157.
O’Rouke T. D., and Kulhawy F. H. (1985). “Observations on load tests for drilled shafts.” Proc., Drilled Piers and Caissons II, Denver, Clyde N. Baker, ed., ASCE, New York, 113–128.
Radhakrishnan, R., and Leung, C. F.(1989). “Load transfer behavior of rock-socketed piles.” J. Geotech. Eng., 115(6), 755–768.
Rowe, R. K., and Armitage, H. H.(1987). “A design method for drilled piers in soft rock.” Can. Geotech. J., 24, 126–142.
Sugawara, S., and Shigenawa, S. (1996). “Large-scale jet grouting for pre-strutting in soft clay.” Proc., Int. Conf. on Grouting and Deep Mixing, Balkema, Rotterdam, The Netherlands, 353–356.
Tornaghi, R., and Cippo, A. P. (1985). “Soil improvement by jet grouting for the solution of tunnelling problems.” Proc., 4th Int. Symp. on Mining and Metallurgy: Tunnelling, IMM, London, 265–276.
Wang, J. G., Oh, B., Lim, S. W., and Kumar, G. S. (1998). “Studies on soil disturbance caused by grouting in treating marine clay.” Proc., 2nd Int. Conf. on Ground Improvement Techniques, CI Premier, Singapore, 251–258.
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Information
Published In
Journal of Performance of Constructed Facilities
Volume 16 • Issue 4 • November 2002
Pages: 160 - 168
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: Aug 7, 2001
Accepted: Feb 26, 2002
Published online: Oct 15, 2002
Published in print: Nov 2002
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