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The In-Plane Effective Length Factor of Web Members of the Steel Truss

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Abstract

In the code for design of steel structures, the effective length factor of the support and other web members of the steel trusses composed of double angle steel were taken as 1.0 and 0.8, respectively. However, the effective length factor of the support and other web members did not take into account factors such as the stiffness provided by non-adjacent members, the stiffness of the joint itself, and the influence of load changes in the code for design of steel structures. To consider the above influencing factors, a finite element model, based on the steel truss atlas, was established in Abaqus, the elastic restraint stiffness of the web member end was obtained through numerical analysis. The equation was established according to the restraints of the web member end, and the effective length factors of the web member were obtained by solving the equation with Matlab. The analysis found that the elastic restraint stiffness of the web member provided by the bottom chord would not increase by increasing the tension of the bottom chord within the range of elastic deformation. The elastic restraint stiffness of the web member provided by the top chord would not weak by increasing the pressure of the top chord within the range of elastic deformation. It was recommended that the effective length factors of the support and other web members of the steel truss should be 0.8 and 0.7, respectively.

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References

  • Boel, H. (2010). Buckling length factors of hollow section members in lattice girders. Eindhoven University of Technology.

    Google Scholar 

  • Bürgermeister, G., & Steup, H. (1974). Stability theory (Vol. 2). China Architecture Industry Press.

    Google Scholar 

  • Cai, J., & Chen, G. (2008). Influence of adjacent brace rigidity on effective length of compressive brace in truss. Engineering Mechanics, 36(6), 1–5.

    Article  MathSciNet  Google Scholar 

  • Chen, S. F. (2008). Design principle of steel structure. Science Press.

    Google Scholar 

  • Chen, K., & Zhao, E. (2015). Research on chord-bucking-length coefficient of cross-type lattice boom. Engineering Mechanics, 36(5), 215–221.

    Google Scholar 

  • CIDECT. (1980). Buckling lengths of HSS web members welded to HSS chords. CIDECT.

    Google Scholar 

  • CIDECT. (1984). Construction with hollow steel sections. CIDECT.

    Google Scholar 

  • Fukumoto, T., & Morita, K. (2000). Elastoplastic behavior of steel beam to square concrete-filled steel tube (CFT) column connections. In Proceedings of the 6th ASCCS conference Vol. 1: Composite and hybrid structures (pp. 565–572). Los Angeles, USA.

  • GB50017-2017. (2017). Design code for steel structures.

  • Hong, W., & Liang, Y. (2017). A study on effective length of slender column with elastic restraints. Procedia Engineering, 210, 228–234.

    Article  Google Scholar 

  • Jostein, H. (2012). Evaluation of effective length formulas and applications in system instability analysis. Engineering Structures, 45, 405–420.

    Article  Google Scholar 

  • Kishia, N., & Chen, W. F. (1998). Effective length factor of columns in flexibly jointed and braced frames. Journal of Constructional Steel Research, 47, 93–118.

    Article  Google Scholar 

  • Kyle, T., & Jeffrey, A. (2018). Fillet weld effective lengths in CHS X-connections. II: Finite element modeling, parametric study and design. Journal of Constructional Steel Research, 141, 77–90.

    Article  Google Scholar 

  • Mageirou, G., & Gantes, C. (2006). Buckling strength of multi-story sway, non-sway and partially-sway frames with semi-rigid connections. Journal of Constructional Steel Research, 62(9), 893–905.

    Article  Google Scholar 

  • Monty, J. (1981). Effective lengths of lattice girder member. CIDECT.

    Google Scholar 

  • Pondal, J. (1988). 3K-effective lengths of tubular lattice girder members-statistical test. CIDECT.

    Google Scholar 

  • Saffari, H., & Rahgozar, R. (2008). An efficient method for computation of effective length factor of columns in a steel gabled frame with tapered members. Journal of Constructional Steel Research., 64, 400–406.

    Article  Google Scholar 

  • Wang, W., & Chen, Y. (2005). Analysis of effective length of compressive braces in semi-rigid steel trusses. Engineering Mechanics, 22(5), 131–135.

    Article  Google Scholar 

Download references

Acknowledgements

The research is supported by Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi (2019L0547).

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  1. School of Civil Engineering, North University of China, Taiyuan, 030051, Shanxi, China

    Liang Zheng, Xinrong Qu, Ying Gao & Hong Guo

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  1. Liang Zheng
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  2. Xinrong Qu
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  3. Ying Gao
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  4. Hong Guo
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Correspondence to Liang Zheng.

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Zheng, L., Qu, X., Gao, Y. et al. The In-Plane Effective Length Factor of Web Members of the Steel Truss. Int J Steel Struct 21, 800–819 (2021). https://doi.org/10.1007/s13296-021-00474-1

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  • DOI: https://doi.org/10.1007/s13296-021-00474-1

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