Torsional behavior of triangular web profile (TRIWP) steel section by experimental study

Abstract

A triangular web profile (TriWP) is a modified section where the flanges are connected to a web plate of triangular profile. This study examined the torsional behavior of TriWP steel sections and compared to that of the flat web (FW) steel sections. Three types of specimen sizes were used: 180 mm × 75 mm × 5 mm × 2 mm, 200 mm × 100 mm × 8 mm × 6 mm, and 200 mm × 100 mm × 6 mm × 5 mm. All the specimens were loaded vertically until the maximum load was achieved and then the load was released. For both types of specimens, it was observed that the torsional rotation for bigger size [200 mm × 100 mm × 8 mm × 6 mm] were smaller than that of smaller size [180 mm × 75 mm × 5 mm × 2 mm] of the specimens. At the maximum torsional loading, the experimental result was compared to the theoretical calculation. The comparison showed that the percentage difference ranged from 1.10% to 16.80%. From the graph of torsional load versus rotational angle, the torsional rotation for all TriWP steel sections were smaller than that of the FW steel section under the same torsional loading i.e., 0.2 kNm and 1 kNm. The range between FW and TriWP were 3.74 to 71.83 at 0.2 kNm while 14.5 to 75.1 at 1.0 kNm. The findings were shown that the TriWP steel sections had better resistance against torsion in comparison to FW steel section.

Keywords

corrugated web / i-beam / non uniform steel section / torsion resistance / torsion angle / triangular web profile steel section

References

[1] Sabarish J, Biju V. Web Buckling Of Castellated Beams. Department of Civil Engineerin g, College of Engineering Trivandrum, Kerala, India, 2010

[2] Trahair N S, Pi Y L. Torsion, bending and buckling of steel beams. Engineering Structures, 1997, 19(5): 372–377

[3] Sapountzakis E J, Mokos V G. Non-uniform torsion of bars of variable cross section. Computers & Structures, 2004, 82(9): 703–715

[4] Coull A, Tawfik S Y. Analysis of core structures subjected to torsion. Building and Environment, 1981, 16(3): 221–228

[5] Billinghurst A, Williams J R L, Chen G, Trahair N S. Inelastic uniform torsion of steel members. Computers & Structures, 1992, 42(6): 887–894

[6] Gotluru B P, Schafer B W, Pekoz T. Torsion in thin-walled cold-formed steel beams. Thin-walled Structures, 2000, 37(2): 127–145

[7] Eldib M E A. Shear buckling strength and design of curved corrugated steel webs for bridges. Journal of Constructional Steel Research, 2009, 65(12): 2129–2139

[8] He J, Liu Y, Lin Z, Cheng A, Yoda T. Shear behavior of partially encased composite I-girder with corrugated steel web: Experimental study. Journal of Constructional Steel Research, 2012, 77: 193–209

[9] Ding Y, Jiang K, Liu Y. Nonlinear analysis for PC box-girder with corrugated steel webs under pure torsion. Thin-walled Structures, 2012, 51: 167–173

[10] Khalid Y A, Chan C L, Sahari B B, Hamouda A M S. Bending behavior of corrugated web beams. Journal of Materials Processing Technology, 2004, 150(3): 242–254

[11] Korrani H R K N. Lateral bracing of I-girder with corrugated webs under uniform bending. Journal of Constructional Steel Research, 2010, 66(12): 1502–1509

[12] Jamali S. Torsional behavior of trapezoid web profile. Master Thesis, UniversitiTeknologi Malaysia, 2002

[13] Yi J, Gil H, Youn K, Lee H. Interactive shear buckling behavior of trapezoidally corrugated steel webs. Engineering Structures, 2008, 30(6): 1659–16669

[14] Moon J, Yi J, Choi B H, Lee H. Shear strength and design of trapezoidally corrugated steel webs. Journal of Constructional Steel Research, 2009, 65(5): 1198–1205

[15] Denan F, Osman M H, Saad S. The study of lateral torsional buckling behavior of beam with trapezoid web steel section by experimental and finite element analysis. International Journal of Research and Reviews in Applied Science, 2010, 221(1-2): 107–111

[16] He J, Liu Y, Chen A, Yoda T. Mechanical behavior and analysis of composite bridges with corrugated steel webs: State-of-the-art. International Journal of Steel Structures, 2012, 12(3): 321–338

[17] Wang Z, Tan L, Wang Q. Fatigue strength evaluation of welded structural details in corrugated steel web girders. International Journal of Steel Structures, 2014, 13(4): 707–721

[18] Den’nan F, Hashim N S.Experimental study on bending behavior of triangular web profile steel beam section. International Journal of Research in Engineering and Technology, 2013, 2(10): 384–390

[19] Nethercot D A, Salter P R, Malik A S. Design of members subject to combined bending and torsion, SCI Publication 057, The Steel Construction Research, 1997

[20] Denan F, Hashim N S. The effect of web corrugation angle on bending performance of triangular web profile steel beam section. International Journal of Energy Engineering, 2012, 2(1): 1–4

[21] De’nan F. Effect of triangular web profile on the shear behaviour of steel I-beam. Iranica Journal of Energy & Environment, 2013, 4(3): 219–222

[22] De’nan F, Omar N, Mustapha M.Finite element analysis of torsion behaviour of triangular web profile beam section. In: Proceedings of the PMM Research Colloqium 2012. Politeknik Merlimau, Melaka, January 2012

Acknowledgements

The authors would like to express their deepest appreciation to the financial support given by the Universiti Sains Malaysia (USM) under the Fundamental Research Grant Scheme (FRGS) (Account number: 203/PAWAM/6071239) in funding this project. Further gratitude goes to the technical assistance of the technician at the Heavy Structure Laboratory, USM.

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2016 Higher Education Press and Springer-Verlag Berlin Heidelberg