Structural Capacity of Precast Piles with Grouted Base
Publication: Journal of Geotechnical Engineering
Volume 120, Issue 8
Abstract
To improve the performance of a precast pile installed in a prebored hole, a grouted base is often made around the base of the pile. The structural capacity of a precast pile with a grouted base was studied by three series of model loading tests. Two failure mechanisms were observed, punching failure and splitting failure, which depended upon the geometry of the grouted base. Punching failure occurs in cases in which the grouted base is thin, less than twice the pile diameter. In contrast, splitting failure develops in cases in which the grouted base is thicker than twice the pile diameter. Structural capacity increases with increasing the thickness of grouted base. The effect of diameter of grouted base was also examined. Based on the experimental observations, a theoretical model was developed to evaluate the structural capacity. The theoretical prediction agreed well with the experimental results. A parametric study was performed to determine the optimum shape and strength of the grouted base.
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References
1.
Chen, W. S. (1975). Limit analysis and soil plasticity. Elsevier Science Publishing Co., Amsterdam, The Netherlands, 447–491.
2.
Horiguchi, T. (1986). “An example of grout pile in Japan.” Proc., 8th Asian Regional Conf. on Soil Mech. and Found. Engrg., Vol. 2, Japanese Society of Soil Mechanics and Foundation Engineering, Tokyo, Japan, 344.
3.
Japanese Society of Soil Mechanics and Foundation Engineering. (1990). “Test method for maximum and minimum densities of sands.” Rep.; Soil testing methods and their explanations, Tokyo, Japan, 106–115 (in Japanese).
4.
Okamoto, T., Tamura, T., Takano, K., Hayashi, M., Shimaoka, H., Homma, T., and Chida, S. (1991). “A new deep foundation composed of soil‐cement mixture and steel tubular pile.” Proc., 4th Int. Conf. on Piling and Deep Found., Deep Foundation Institute, Vol. 1, 287–296.
5.
Roark, R. J., and Young, W. C., (1975). Formulas for stress and strain, 5th Ed., McGraw‐Hill Kogakusha Ltd., 503–508.
6.
Yamashita, I. (1991). “Bearing capacity of large diameter piling by the internal boring and bottom enlarging installation method, NAKS method.” Proc., 4th Int. Conf. on Piling and Deep Found., Vol. 1, Deep Foundation Institute, 161–167.
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Copyright © 1994 American Society of Civil Engineers.
History
Received: Apr 9, 1993
Published online: Aug 1, 1994
Published in print: Aug 1994
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