- Volume 5 Issue 5
DOI QR Code
Performance of cold-formed steel wall frames under compression
- Pan, Chi-Ling (Department of Construction Engineering, Chaoyang University of Technology) ;
- Peng, Jui-Lin (Department of Construction Engineering, National Yunlin University of Science & Technology)
- Received : 2004.09.10
- Accepted : 2005.03.30
- Published : 2005.10.25
This study presents the strength of braced and unbraced cold-formed steel wall frames consisting of several wall studs acting as columns, top and bottom tracks, and bracing members. The strength and the buckling mode of steel wall frames were found to be different due to the change of bracing type. In addition, the spacing of wall studs is a crucial factor to the strength of steel wall frames. The comparisons were made between the test results and the predictions computed based on AISI Code. The related specifications do not clearly provides the effective length factors for the member of cold-formed steel frame under compression. This paper proposes effective length factors for the steel wall frames based on the test results. A theoretical model is also derived to obtain the modulus of elastic support provided by the bracing at mid-height of steel wall frames in this research.
cold-formed steel;wall frame;channel bridging;strap bracing;effective length factor
- Oritiz-Collberg, R.A. (1981),"The load carrying capacity of perforated steel columns", MS Thesis, Cornell Univ., Ithaca, N.Y.
- Pan, C.L. and Chung, P.T. (2004),"The compressive behavior of C-shaped cold-formed steel members with web openings", The 7th Nat. Conf. on Structure Engineering, Chung-Li, Taiwan, R.O.C.
- Standards Australia (1996). Cold-formed Steel Structures, AS/NZS 4600, Sydney.
- Simaan, A and Pekoz, T. (1976),"Diaphragm braced members and design of wall studs", J. Struct. Div., ASCE Proceeding, 102(1), 77-93.
- Telue, Y. and Mahendran, M. (2001),"Behaviour of cold-formed steel wall frames lined with plasterboard", J. Constructional Steel Research, Elsevier Science Ltd, 57, 435-452. https://doi.org/10.1016/S0143-974X(00)00024-9
- Timoshenko, S.P. and Gere, J.M. (1961). Theory of Elastic Stability, 2nd Edition, McGraw-Hill, N.Y.
- American Iron and steel Institute (2001), Specification for the Design of Cold-Formed Steel Structural Members, Washington, DC.
- American Iron and steel Institute (1986), Specification for the Design of Cold-Formed Steel Structural Members, Washington, DC.
- El-Sheikh, A.I., El-Kassas, E.M.A., and Mackie, R.I. (2001),"Performance of stiffened and unstiffened coldformed channel member in axial compression", Eng. Struct., 23, 1221-1231. https://doi.org/10.1016/S0141-0296(01)00034-7
- Lee, Y.K. and Miller, T.H. (2001),"Axial strength determination for gypsum-sheathed cold-formed steel wall stud composite panels", J. Struct. Eng., ASCE, 127(6), 608-615. https://doi.org/10.1061/(ASCE)0733-9445(2001)127:6(608)
- Miller, T.H. and Pekoz, T. (1993),"Behavior of cold-formed steel wall stud assemblies", J. Struct. Eng., ASCE, 119(2), 641-651. https://doi.org/10.1061/(ASCE)0733-9445(1993)119:2(641)
- Miller, T.H. and Pekoz, T. (1994a),"Behavior of gypsum-sheathed cold-formed steel wall studs", J. Struct. Eng., ASCE, 120(5), 1644-1650. https://doi.org/10.1061/(ASCE)0733-9445(1994)120:5(1644)
- Miller, T.H. and Pekoz, T. (1994b),"Unstiffened strip approach for perforated wall studs", J. Struct. Eng., ASCE, 120(2), 410-421. https://doi.org/10.1061/(ASCE)0733-9445(1994)120:2(410)