Effect of Foundation Nonlinearity on Modal Properties of Offshore Towers
Publication: Journal of Geotechnical Engineering
Volume 121, Issue 9
Abstract
An analysis of pile axial and lateral response to transient dynamic loading is presented allowing for nonlinear soil behavior, the discontinuity conditions at the pile-soil interface, and energy dissipation through radiation damping and soil hysteresis. In addition, the effect of neighboring piles is taken into account for piles in a group. This analysis is used to derive the stiffness of foundation piles of fixed offshore towers. The effect of foundation nonlinearity and pile-soil-pile interaction on the dynamic characteristics of the tower is investigated. It was found that the tower's dynamic characteristics are greatly influenced by the foundation nonlinearity and the pile-soil-pile interaction.
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References
1.
American Petroleum Institute. (1991). “Recommended practice for planning, designing and constructing fixed offshore platforms.”API Recommended Practice 2A (RP 2A), 19th Ed., Washington, D.C.
2.
Bathe, K. J. (1982). Finite element procedures in engineering analysis . Prentice-Hall, Inc., Englewood Cliffs, N.J.
3.
El-Marsafawi, H., Kaynia, A. M., and Novak, M. (1992). “The superposition approach to pile group dynamics. Piles under dynamic loads.”Geotech. Spec. Publ. No. 34, ASCE, New York, N.Y., 114–135.
4.
El Naggar, M. H. (1994). “Nonlinear analysis of piles with application to offshore tower response,” PhD thesis, Univ. of Western Ontario, London, Ontario, Canada.
5.
El Naggar, M. H., and Novak, M.(1994a). “Nonlinear model for dynamic axial pile response.”J. Geotech. Engrg., ASCE, 120(2), 308–329.
6.
El Naggar, M. H., and Novak, M.(1994b). “Nonlinear axial interaction in pile dynamics.”J. Geotech. Engrg., ASCE, 120(4), 678–696.
7.
Gazetas, G., and Dobry, R.(1984). “Simple radiation damping model for piles and footings.”J. Engrg. Mech., ASCE, 110(6), 937–956.
8.
Kondner, R. L.(1963). “Hyperbolic stress strain response: cohesive soils.”J. Soil Mech. and Found. Div., ASCE, 89(1), 115–143.
9.
Makris, N., and Gazetas, G.(1992). “Dynamic pile-soil-pile interaction. Part II: lateral and seismic response.”J. Earthquake Engrg. and Struct. Dynamics, 21(2), 145–162.
10.
Novak, M.(1977). “Vertical vibration of floating piles.”J. Engrg. Mech., ASCE, 103(1), 153–167.
11.
Novak, M., and El Hifnawy, L. (1983). “Effect of soil structure interaction on damping of structures.”J. Earthquake Engrg. and Struct. Dynamics, 11(Sep.), 595–621.
12.
Novak, M., and Howell, J. I.(1978). “Dynamic response of pile foundations in torsion.”J. Geotech. Engrg., ASCE, 104(5), 535–552.
13.
Novak, M., Nogami, T., and Aboul-Ella, F.(1978). “Dynamic soil reactions for plane strain case.”J. Engrg. Mech., ASCE, 104(4), 953–959.
14.
Novak, M., and Sheta, M. (1980). “Approximate approach to contact problems of piles.”Proc., ASCE, Nat. Convention, “Dynamic Response of Pile Foundations: Analytical Aspects,” ASCE, New York, N.Y., 53–79.
15.
Poulos, H. G.(1971). “Behaviour of laterally loaded piles: II-pile groups.”J. Soil Mech. and Found. Div., ASCE, 97(5), 733–751.
16.
Winkler, E. (1867). Die Lehre vonder Elastizitat und Festigkeit . Dominicus, Prague, Czech Republic.
Information & Authors
Information
Published In
Journal of Geotechnical Engineering
Volume 121 • Issue 9 • September 1995
Pages: 660 - 668
Copyright
Copyright © 1995 American Society of Civil Engineers.
History
Published online: Sep 1, 1995
Published in print: Sep 1995
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