Original Scientific Paper, Volume 12, Number 2, Year 2014, No 288, pp 153 - 158
Published: Feb 24, 2017
DOI: 10.5937/jaes12-5764
THE JOINTS OF COLD-FORMED PURLINS
Abstract
Two
problems of purlin design related to bending moment distribution in continuous
and in simply supported purlin are considered. Bending moment redistribution in
purlin may be realized using bearing spring (BS) elements. Preliminary results
of numerical experiments show the substantial reduction of bending moments in
purlin thus obtaining less section heights and web thicknesses. The approach to
reduction of internal forces in purlins may help in resolving some problems
typical for cold-formed thin-walled structures. There may be also some
optimization possible relating BS- elements lengths and thicknesses and cross
sections.
Keywords
References
Chung K.F., Ho. H.C. (2005) Analysis and design of lapped connections between coldformed steel Z-sections, Thin-walled structures, Vol. 43, Iss. 7, pp. 1071-1090
Chung K.F., Ho H.C. (2004) Structural behaviour of high strength cold-formed steel Z-purlins with overlaps, Seventeenth International Specialty Conference on Cold-Formed Steel Structures, Orlando, Florida, USA, Pp. 777-798
Epstein H., Murtha-Smith E., Mitchell J. (1998) Analysis and design assumptions for continuous cold-formed purlins, Practice Periodical on Structural Design and Construction, Vol. 2, No. 2, pp. 60-67
Gardner L., Nethercot D. (2011) Designers' Guide to Eurocode 3: Design of Steel Buildings. EN 1993-1-1, -1-3 and -1-8. Second edition, 161 p.
Hancock G.J., Celeban M., Healy C., Georgiou P.N., Ings N. (1990) Tests of purlins with screw fastened sheeting under wind uplift, NBS Special Publication No. 577, National Bureau of Standard, Washington DC, USA, pp. 319-419
Hancock G.J., Celeban M., Healy C. (1992) Tests of continuous purlins under downwards loading, Proceedings of Eleventh International Specialty Conference on Cold-Formed Steel Structures, St. Louis, Missouri, USA, pp. 155-179
Ho H.C., and Chung K.F. (2002) An experimental investigation into lapped moment connections between Z sections, Proceedings of the Third International Conference on Advances in Steel Structures, Hong Kong, pp. 437-444
Ho H.C., and Chung K.F. (2004) Experimental investigation onto the structural behaviour of lapped connections between cold-formed steel Z sections, Thin-Walled Structures, Vol. 42, Iss. 7, pp. 1013-1033
Ho H.C. and Chung K.F. (2002) Structural analysis on lapped moment connections between cold-formed steel Z sections, Proceedings of the Second International Conference on Stability and Dynamic, Singapore, pp. 675-680
LaBoube R.A. (1988) Behavior of continuous span purlin system, Ninth International Conference on Cold-Formed Steel Structures, St. Louis, Missouri, USA, pp. 191-203
Luza G., Robra J. (2008) Design of Z-purlins: Part 1. Basics and cross-section values according to EN 1993-1-3, Proceedings of the 5th European Conference on Steel and Composite Structures EUROSTEEL, Graz, Austria, pp. 129-134
Luza G., Robra J. (2008) Design of Z-purlins: Part 2. Design methods given in Eurocode EN 1993-1-3, Proceedings of the 5th European Conference on Steel and Composite Structures EUROSTEEL, Graz, Austria, pp. 135-140
Sokol L. (1988) Aspects of the design of purlins in
Z-sections, Der Metallbau im konstruktiven Ingenieurbau (Festschrift R.
Baehre), Karlsruhe, pp. 341-358
Sokol L. (1996) Stability of cold-formed purlins braced by steel sheeting, Thin-Walled Structures, Vol. 25, No. 4, pp. 247-268