Lateral Cyclic Loading Centrifuge Tests on Square Embedded Footing
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 124, Issue 11
Abstract
Cyclic lateral loading centrifuge tests were performed on a model of an embedded foundation to study its lateral response at various displacement levels up to ultimate lateral load capacity. The tests simulated a reinforced concrete square, 1.14 m × 1.14 m × 0.84 m high foundation embedded in a dry sand of 75% relative density. The results are relevant to shallow foundations and embedded pile caps. The tests' objective was to evaluate the relative contributions of the base, shearing sides, and active/passive sides of the foundation to the total lateral response as well as any possible interaction between these partial contributions. Lateral response parameters studied included secant stiffness and material damping ratio at various displacement amplitudes and ultimate lateral capacity of the foundation. The lateral stiffnesses measured are compared with available elastic solutions. Three-dimensional static nonlinear finite-element analyses are used to predict the measured lateral load-displacement curves of two of the tests, as well as to confirm analytically the relative contributions of base, shearing sides, and active/passive sides. Thus calibrated, the finite-element model is used to predict the lateral stiffness response of a broad range of embedded footing geometries in sand.
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References
1.
ABAQUS/standard theory manual, version 5.4. (1994). Hibbit, Karlsson & Sorensen, Inc., Pawtucket, R.I.
2.
Arulmoli, K., Muraleetharan, K. K., Hossain, M. M., and Fruth, L. S. (1992). “Verification of liquefaction analysis by centrifuge studies laboratory testing program soil data report.”Rep. from the Earth Technology Corporation, Irvine, Calif.
3.
Brown, D. A., and Shie, C. F.(1990). “Three dimensional finite element model of laterally loaded piles.”Comp. and Geotechnics, 10, 59–79.
4.
Caquot, A., and Kérisel, J. (1949). Traite de mechanique des sols. Gauthier-Villars, Paris, France (in French).
5.
Crouse, C. B., Hushmand, B., Luco, E., and Wong, H. L.(1990). “Foundation impedance functions: Theory versus experiment.”J. Geotech. Engrg., ASCE, 116(3), 432–449.
6.
Crouse, C. B., Liang, G. C., and Martin, G. R.(1985). “Experimental foundation impedance functions.”J. Geotech. Engrg., ASCE, 111(6), 819–822.
7.
Dobry, R., and Gazetas, G.(1986). “Dynamic response of arbitrarily shaped foundations.”J. Geotech. Engrg., ASCE, 112(2), 109–135.
8.
Dominguez, J. (1978). “Dynamic stiffness of rectangular foundations.”Res. Rep. R78-20, Civ. Engrg. Dept., MIT, Cambridge, Mass.
9.
Elgamal, A.-W., Dobry, R., Van Laak, P., and Nicolas-Font, J. (1991). “Design, construction, and operation of 100 g-ton centrifuge at RPI.”Proc., Int. Conf. Centrifuge '91, H.-Y. Ko and F. G. McLean, eds., 27–34.
10.
Gadre, A. D. (1997). “Lateral response of pile-cap foundation systems and seat-type bridge abutments in dry sand,” PhD thesis, Rensselaer Polytechnic Inst., Troy, N.Y.
11.
Gazetas, G.(1991). “Formulas and charts for impedances of surface and embedded foundations.”J. Geotech. Engrg., ASCE, 117(9), 1363–1381.
12.
Gazetas, G., and Stokoe, K. H.(1991). “Free vibration of embedded foundations: Theory versus experiment.”J. Geotech. Engrg., ASCE, 117(9), 1382–1401.
13.
Gazetas, G., and Tassoulas, J. L.(1987). “Horizontal stiffness of arbitrary shaped embedded foundations.”J. Geotech. Engrg., ASCE, 113(5), 440–457.
14.
Johnson, G. R., Christiano, P., and Epstein, H. I.(1975). “Stiffness coefficients for embedded footing.”J. Geotech. Engrg. Div., ASCE, 101(8), 789–800.
15.
Kausel, E., and Roesset, J. M.(1975). “Dynamic stiffness of circular foundations.”J. Engrg. Mech. Div., ASCE, 101(6), 771–785.
16.
Lambe, T. W., and Whitman, R. V. (1969). Soil mechanics, John Wiley & Sons, Inc., New York.
17.
Pais, A., and Kausel, E. (1988). “Approximate formulas for dynamic stiffness of rigid foundations.”Soil Dyn. and Earthquake Engrg., 7(4), 213–227. PATRAN user's manual, version 1.2. (1993). PDA Engineering, PATRAN Div., Costa Mesa, Calif.
18.
Richart, F. E., Jr., Hall, J. R., and Woods, R. D. (1970). Vibrations of soils and foundations. Prentice-Hall, Inc., Englewood Cliffs, N.J.
19.
Stokoe, K. H., and Richart, F. E.(1974). “Dynamic response of embedded machine foundations.”J. Geotech. Engrg. Div., ASCE, 100(4), 427–447.
20.
Wolf, J. P. (1988). Soil-structure-interaction analysis in time domain. Prentice-Hall, Inc., Englewood Cliffs, N.J.
21.
Wong, H. L., and Luco, J. E. (1978). “Tables of impedance functions and input motions for rectangular foundations.”Rep. No. CE78-15, Univ. of Southern California, Los Angeles, Calif.
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Copyright © 1998 American Society of Civil Engineers.
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Published online: Nov 1, 1998
Published in print: Nov 1998
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