An Improved Analysis Method on the Deformation Shape of Curved Plate Girders by Cold Bending

Abstract:

A typical cold bending process of curved plate girder in building construction was investigated in order to reveal the principle of deformation shape of curved I-shaped plate girder. An improved calculation method basing on geometry analysis was proposed to predict the geometric relationship between the residual deformation of curved I-shaped plate girder and the offsets of all segments in successive loading process. An example referring to the existing literatures was adopted to revise the efficiency of such an improved method. The results illustrate that the final offset distances of the key points, which were used to divide the girder into several segments with the same length, can be simply obtained by summing up the offset of each segment in once typical loading process, and the final residual deformation of curved girder was depended on the forming angle of each segment of I-shaped plate girder in once typical loading process.

• Periodical: Applied Mechanics and Materials (Volumes 351-352)
• Pages: 658-662
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.351-352.658
• Online since: August 2013
• Authors: Ren Hua Wang, Jin Zhu, Lei Lu
• Keywords: Cold Bending, Curved Plate Girder, Geometric Analysis, Plastic Theory

References

[1] Gergess A N, Sen R. Cold curving symmetric unstiffened I-girders. Journal of Constructional Steel Research, 2005, 61(4): 473-492.

DOI: 10.1016/j.jcsr.2004.10.007

[2] Gergess A N, Sen R. Fabrication of unsymmetrical curved plate girders by cold bending. Journal of Constructional Steel Research, 2005, 61(10): 1353-1372.

DOI: 10.1016/j.jcsr.2005.03.005

[3] Spoorenberg R C, Snijder H H and Hoenderkamp J C D. Mechanical properties of roller bent wide flange sections — Part 1: Experimental investigation. Journal of Constructional Steel Research, 2012, 68(1): 51-62.

DOI: 10.1016/j.jcsr.2011.07.003

[4] Bjorhovde R. Cold bending of wide-flange shapes for construction. Engineering Journal, AISC, 2006, 43(4): 271-286.

[5] Gardner L, Cruise R B. Modeling of residual stresses in structural stainless steel sections. Journal of Structural Engineering, 2009, 135(1): 42-53.

DOI: 10.1061/(asce)0733-9445(2009)135:1(42)

[6] Li S Z, Yin Y D, Xu J et al. Numerical simulation of continuous tension leveling process of thin strip steel and its application. Journal of Iron and Steel Research, International, 2007, 14(6): 8-13.

DOI: 10.1016/s1006-706x(07)60082-x

[7] Quach W M, Teng J G and Chung K F. Residual stresses in press-braked stainless steel sections, II: Press-braking operations. Journal of Constructional Steel Research, 2009, 65(8–9): 1816-1826.

DOI: 10.1016/j.jcsr.2009.04.011

[8] Mandal N R. Cold forming of welded steel T sections. Thin-walled Structures, 1992, 13(4): 319-335.

DOI: 10.1016/0263-8231(92)90027-t

[9] Gergess A N, Sen R. Full-scale cold bending demonstration test. Journal of Constructional Steel Research, 2007, 63(10): 1295-1304.

DOI: 10.1016/j.jcsr.2006.11.015