Strength and Behavior of Grouted Pile‐To‐Sleeve Connections
Publication: Journal of Structural Engineering
Volume 117, Issue 8
Abstract
Eighteen grouted pile‐to‐sleeve connections were tested to examine the influence of combined loading, relative shear‐key location between pile and sleeve, pile‐sleeve eccentricity, and grout strength. The results indicated that combined loading had no detrimental effect on ultimate capacity of a grouted connection. Ultimate capacity was not affected by the position of shear keys in the pile relative to those in the sleeve or by thickness variations in the grout annulus. The capacity of connections varied with the square root of the grout strength. Results were compared with recognized empirical formulations. The results indicated that safety factors could be reduced and yet maintain acceptable safety indices. Examination of tested grouted‐connection specimens indicated that the major load‐resisting mechanisms are grout commpression struts and friction that develops at the grout‐steel interface. A simplified analytical model was developed using concrete constitutive relationships, and various geometric and material parameters were investigated. The analytical results indicated that increases in shear‐key height or reduction of shear‐key spacing may not lead to higher ultimate strength of the connection.
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References
1.
Billington, C. J., and Tebbett, I. E. (1980). “The basis of new design formulae for grouted jacket to pile connections.” Offshore Tech. Conf., Proc., 21, 449–450.
2.
Fardis, M. N., Alibe, B., and Tassoulas, J. L. (1983). “Monotonic and cyclic constitutive law for concrete.” J. Engrg. Mech., ASCE, 109(4), 527–535.
3.
Karsan, D. I., and Krahl, N. W. (1984). “New API equation for grouted pile‐to‐structure connections.” Offshore Tech. Conf., Proc., 2, 49–56.
4.
Krahl, N. W., and Karsan, D. I. (1985). “Axial strength of grouted pile‐to‐sleeve connections.” J. Struct. Engrg., ASCE, 111(4), 889–905.
5.
Lamport, W. B., Jirsa, J. O., and Yura, J. A. (1986). “Grouted pile‐to‐sleeve connection tests.” PMFSEL Report No. 86‐7, The University of Texas at Austin, Austin, Tex.
6.
Moses, F. (1987). “Load and resistance factor design‐recalibration.” API Prac Project 87‐22, American Petroleum Institute, Dallas, Tex.
7.
Moses, F. (1988). “Program notes prepared in cooperation with API Prac 22—Project, Tutorial RP 2A‐LRFD.” Load and resistance factor design application to design of fixed offshore platforms, American Petroleum Institute, Dallas, Tex.
8.
Moses, F., and Russell, L. (1980). “Applicability of reliability analysis in offshore design practice.” API Prac Project 79‐22, Final Report, American Petroleum Institute, Dallas, Tex.
9.
Rabbat, B. G., and Russell, H. G. (1985). “Friction coefficient of steel on concrete or grout.” J. Struct. Engrg., ASCE, 111(3), 505–515.
10.
“Recommended LRFD practice for planning, designing and constructing fixed offshore platforms.” (1988). DRAFT API RP 2A‐LRFD, American Petroleum Institute, Dallas, Tex.
11.
“Recommended practice for planning, designing, and constructing fixed offshore platforms.” (1976). API RP 2A, 7th Ed., American Petroleum Institute, Dallas, Tex.
12.
“Recommended practice for planning, designing and constructing fixed offshore platforms.” (1987). API RP 2A, 17th Ed., American Petroleum Institute, Dallas, Tex.
13.
“Rules for classification—Fixed offshore installations, Draft.” (1986). Det norske Veritas Classification A/S, Høvik, Norway.
14.
Sele, A. B., Veritec, A. S., and Kjeoy, H. (1989). “Background for the new design equations for grouted connections in the DnV draft rules for fixed offshore structures.” Offshore Tech. Conf., Proc., 4.
15.
“United Kingdom Department Energy—Report of the working party on the strength of grouted pile sleeve connections for offshore structures.” (1980). Report No. ST41/80C, Wimpey Laboratories, Ltd.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 117 • Issue 8 • August 1991
Pages: 2477 - 2498
Copyright
Copyright © 1991 ASCE.
History
Published online: Aug 1, 1991
Published in print: Aug 1991
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