P-delta effects in medium height moment resisting steel frames under seismic loading
An analytical investigation of the P-delta effects in medium height steel moment resisting frames excited by selected earthquake motions is reported.
The frames with various design drifts and fundamental natural periods of free vibration were designed according to the loadings provisions for New Zealand's highest seismic risk zone (Wellington) of the Draft Code of Practice for General Structural Design and Design Loading for Buildings, DZ4203  as issued as a "Draft for Comment" in May 1986.
The effect of strength degradation was investigated. Dynamic magnification factors for the member forces and displacement were also observed. Limits for the maximum plastic hinge rotation, inelastic drift, displacement magnification and prediction of maximum plastic hinge rotation based on the inter storey drift are suggested.
ANDREWS, A. L., "Slenderness Effects in Earthquake Resisting Frames", Bulletin of The New Zealand National Society for Earthquake Engineering, Vol.10, No. 3, September 1977.
BUTTERWORTH, J.W., SPRING, K. C. F., “Column Design ", Section D, New Zealand Steel Study Group, Bulletin of The New Zealand National Society for Earthquake Engineering, Vol.18, No.4, December 1985.
CARR, A.J., MOSS, P.J., "The Effects of Large Displacements on The Earthquake Response of Tall Concrete Frame Structures", Bulletin of The New Zealand National Society for Earthquake Engineering, Vol.13, No.4, December 1980.
De BUEN, o., "Chapter 4, Steel structures" in "Design of Earthquake Resistant Structures", ed. E. Rosenblueth, Pentech Press, Plymouth, England, 1980.
LUKEY, A.F., ADAMS,P.F., "Rotation Capacity of Beams Under Moment Gradient", Journal ASCE, ST6, June 1969.
MONTGOMERY, C. J., "Influence of P-Delta Effects on Seismic Design", Canadian Journal of Civil Engineering, No. 8, 1981. DOI: https://doi.org/10.1139/l81-037
MOSS, P. J., CARR, A. J., BUCHANAN, A.H., "Seismic Response of Low Rise Buildings ", Research Report No. 86-15, Department of civil Engineering, University of Canterbury, June 1986.
NEW ZEALAND STANDARD: "Code for Design of Steel Structures", NZ3404, 1977.
NEW ZEALAND STANDARD: "Code of Practice for General Structural Design and Design Loadings for Buildings", NZS4203, 1984.
NEW ZEALAND STANDARD: "General Structural Design and Design Loadings for Buildings", Draft for Comment, DZ4203, (being a revision of Reference 9), May 1986.
OTANI, S., "Hysteresis Models of Reinforced Concrete for Earthquake Response Analysis", Journal of The Faculty of Engineering, The University of Tokyo (B), Vol.XXXVI, No.2 (1981).
PAULAY,T., "A Consideration of P-Delta Effects in Ductile Reinforced Concrete Frames", Bulletin of The New Zealand National Society for Earthquake Engineering, Vol.11, No.3, September 1978.
TJONDRO, J. A. , "A nalytical Investigation of P-Delta Effects in Medium Height Moment-Resisting Steel Frames Under Seismic Loading" , M. E. Report, Department of Civil Engineering, University of Canterbury, February 1988. (An edited version of this Report was published as Civil Engineering Research Report 88/13, December 1988 authored by Tjondro, Moss and Carr).
TJONDRO, J. A., MOSS,P.J. and CARR,A.J., "Seismic P-Delta Effects in Medium Height Moment-Resisting Steel Frames", submitted to the Journal of Engineering Structures, 1990. DOI: https://doi.org/10.5459/bnzsee.23.4.305-321
WALPOLE, W. R., BUTCHER,G.W., "Beam Design", Section C, New Zealand steel Study Group, Bulletin of The New Zealand National Society for Earthquake Engineering, Vol.18, No.4, December 1985.
Copyright (c) 1990 J. A. Tjondro, P. J. Moss, A. J. Carr
This work is licensed under a Creative Commons Attribution 4.0 International License.