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This material is copyright - all rights reserved. Reproduced under licence from The Steel Construction Institute on 12/2/2007 To buy a hardcopy version of this document call 01344 872775 or go to http://shop.steelbiz.org/ Steel Designers' Manual - 6th Edition (2003) 532 Members with compression and moments References to Chapter 18 1. The Steel Construction Institute (SCI) (2001) Steelwork Design Guide to BS 5950: Part 1: 2000, Vol. 1, Section Properties, Member Capacities, 6th edn. SCI, Ascot, Berks. 2. Advisory Desk (1988) Steel Construction Today, 2, Apr., 61–2. 3. Morris L.J. & Randall A.L. (1979) Plastic Design. Constrado. (See also Plastic Design (Supplement), Constrado, 1979.) 4. Horne M.R. (1964) Safe loads on I-section columns in structures designed by plastic theory. Proc. Instn Civ. Engrs, 29, Sept., 137–50 and Discussion, 32, Sept. 1965, 125–34. 5. Brown B.A. (1988) The requirements for restraint in plastic design to BS 5950. Steel Construction Today, 2, 184–96. 6. Morris L.J. (1981 & 1983) A commentary on portal frame design. The Structural Engineer, 59A, No. 12, 394–404 and 61A, No. 6. 181–9. 7. Morris L.J. & Plum D.R. (1988) Structural Steelwork Design to BS 5950. Longman, Harlow, Essex. 8. Horne M.R. & Ajmani J.L. (1972) Failure of columns laterally supported on one flange. The Structural Engineer, 50, No. 9, Sept., 355–66. 9. Nethercot D.A. & Lawson R.M. (1992) Lateral stability of steel beams and columns – common cases of restraint. SCI publication 093, The Steel Construction Institute. Further reading for Chapter 18 Chen W.F. & Atsuta T. (1977) Theory of Beam-Columns, Vols 1 and 2. McGraw-Hill, New York. Davies J.M. & Brown B.A. (1996) Plastic Design to BS 5950. Blackwell Science, Oxford. Galambos T.V. (1998) Guide to Stability Design Criteria for Metal Structures, 5th edn. Wiley, New York. Horne M.R. (1979) Plastic Theory of Structures, 2nd edn. Pergamon, Oxford. Horne M.R., Shakir-Khalil H. & Akhtar S. (1967) The stability of tapered and haunched beams. Proc. Instn Civ. Engrs, 67, No. 9, 677–94. Morris L.J. & Nakane K. (1983) Experimental behaviour of haunched members. In Instability and Plastic Collapse of Steel Structures (Ed. by L.J. Morris), pp. 547–59. Granada. A series of worked examples follows which are relevant to Chapter 18.
This material is copyright - all rights reserved. Reproduced under licence from The Steel Construction Institute on 12/2/2007 To buy a hardcopy version of this document call 01344 872775 or go to http://shop.steelbiz.org/ Steel Designers' Manual - 6th Edition (2003) The Steel Construction Institute Silwood Park, Ascot, Berks SL5 7QN Problem Worked examples 533 Subject BEAM-COLUMN EXAMPLE 1 Chapter ref. ROLLED UNIVERSAL COLUMN 18 Design code Made by DAN Sheet no. BS 5950: Part 1 Checked by GWO Select a suitable UC in S275 steel to carry safely a combination of 940 kN in direct compression and a moment about the minor axis of 16 kNm over an unsupported height of 3.6 m. Problem is one of uniaxial bending producing failure by buckling about the minor axis. Since no information is given on distribution of applied moments make conservative (& simple) assumption of uniform moment (b = 1.0). 3.6mf Try 203 ¥ 203 ¥ 60 UC – member capacities suggest Pcy of Steelwork approximately 1400 kN will provide correct sort of margin to Design Guide carry the moment Vol 1 ry = 5.19 cm Zy = 199 cm 3 A = 75.8 cm 2 Sy = 303 cm 3 ly = 3600/51.9 = 69.4 4.7.2 Use Table 24 curve c for p c For p y = 275 N/mm 2 and l = 69.4 value of p c = 183 N/mm 2 1 Table 23 Pcy = 183 ¥ 7580 = 1387 ¥ 10 3 N 4.7.4 = 1387 kN 940 1387 16 + = 068 . + 029 . - 6 275 ¥ 199000 ¥ 10 = 097 . \ Adopt 203 ¥ 203 ¥ 60UC 4.8.3.3.1
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