International Journal of Steel Structures

, Volume 19, Issue 2, pp 398–412 | Cite as

Analytical Investigation of Beam-to-Column Endplate Connections at Elevated Temperatures

  • Yandi LiEmail author
  • Jincheng Zhao


An analytical model to estimate the complete moment-rotation curve of steel beam-to-column endplate connections is presented in this paper. The method is based on the component-based concept and is capable of predicting the behavior of connections considering the influence of beam axial forces and temperature variations. Significant consideration is devoted to the reliable simulation of T-stub component. A recently developed T-stub model, which is based on the thin plate theory, is able to capture the force-deformation response of a T-stub assembly under fire situations. Verification of the analytical model is carried out by comparing with available experimental results of isolated connections in other literatures. The analytical model is also validated against a 3D finite element model, considering different axial load levels at different temperatures. The validation results illustrate the reliability and efficiency of the analytical model in predicting the initial stiffness and ultimate moment resistance of connections. However, the prediction of rotation capacity still needs some improvements, since the simulation of some basic components at elevated temperatures is not quite accurate. Also, some valuable rules are concluded on the behavior of connections subjected to different beam axial loads at different temperatures.


Steel connection Elevated temperatures Component based method Bending moment and axial force Rotation capacity 



The research is supported by the National Natural Science Foundation of China (No. 51678358).


  1. Barata, P., Ribeiro, J., Rigueiro, C., Santiago, A., & Rodrigues, J. P. (2014). Assessment of the T-stub joint component at ambient and elevated temperatures. Fire Safety Journal, 70(1), 1–13.CrossRefGoogle Scholar
  2. Burgess, I., Davison, J. B., Dong, G., & Huang, S. S. (2012). The role of connections in the response of steel frames to fire. Structural Engineering International, 22(4), 449–461.CrossRefGoogle Scholar
  3. de Lima, L. R. O., da Silva, L. S., Vellasco, P. C. G. S., & De Andrade, S. A. L. (2004). Experimental evaluation of extended endplate beam-to-column joints subjected to bending and axial force. Engineering Structures, 26(10), 1333–1347.CrossRefGoogle Scholar
  4. Del Savio, A. A., Nethercot, D. A., Vellasco, P. C. G. S., Andrade, S. A. L., & Martha, L. F. (2009). Generalised component-based model for beam-to-column connections including axial versus moment interaction. Journal of Constructional Steel Research, 65(8), 1876–1895.CrossRefGoogle Scholar
  5. EN 1993-1-8. (2005). Eurocode 3: Design of steel structures, Part 1.8: Design of joints. Brussels: Committee of European Normalization.Google Scholar
  6. EN 1993-1-2. (2005). Eurocode 3: Design of steel structuresPart 1.2: General rules-structural fire design. London: British Standards Institution.Google Scholar
  7. González, F., & Lange, J. (2012). Behavior of high-strength grade 10.9 bolts under fire conditions. Structural Engineering International, 22(4), 470–475.CrossRefGoogle Scholar
  8. Huang, Z. (2011). A connection element for modelling end-plate connections in fire. Journal of Constructional Steel Research, 67(5), 841–853.CrossRefGoogle Scholar
  9. Kirby, B. R. (1995). The behavior of high strength grade 8.8 bolts in fire. Journal of Constructional Steel Research, 33(1), 3–38.MathSciNetCrossRefGoogle Scholar
  10. Lemonis, M. E., & Gantes, C. J. (2006). Incremental modeling of T-stub connections. Journal of Mechanics of Material and Structures, 1(7), 1135–1159.CrossRefGoogle Scholar
  11. Lemonis, M. E., & Gantes, C. J. (2009). Mechanical modeling of the nonlinear response of beam-to-column joints. Journal of Constructional Steel Research, 65(4), 879–890.CrossRefGoogle Scholar
  12. Li, Y. D., & Zhao, J. C. (2017). Mechanical model and finite element analyses of the T-stub joint component in fire. Advances in Structural Engineering, 20(12), 1828–1844.CrossRefGoogle Scholar
  13. Piluso, V., Faella, C., & Rizzano, G. (2006). Ultimate behavior of bolted T-stubs. II: Model validation. Journal of Structural Engineering, 127(6), 694–704.CrossRefGoogle Scholar
  14. Quan, G., Huang, S. S., & Burgess, I. (2016). Component-based model of buckling panels of steel beams at elevated temperatures. Journal of Constructional Steel Research, 118(7), 91–104.CrossRefGoogle Scholar
  15. Sokol, Z., Wald, F., & Chlouba, J. (2006). Prediction of end plate joints subject to moment and normal force. Proceedings of the International Conference in Metal Structures, 1(25), 235–240.Google Scholar
  16. Spyrou, S., Davison, J. B., Burgess, I. W., & Plank, R. J. (2004). Experimental and analytical investigation of the ‘compression zone’ component within a steel joint at elevated temperatures. Journal of Constructional Steel Research, 60(6), 841–865.CrossRefGoogle Scholar
  17. Sulong, N. H. R., Elghazouli, A. Y., Izzuddin, B. A., & Ajit, N. (2010). Modelling of beam-to-column connections at elevated temperature using the component method. Steel and Composite Structures, 10(1), 23–43.CrossRefGoogle Scholar
  18. Theodorou, Y. (2001). Mechanical properties of grade 8.8 bolts at elevated temperatures, Master’s Thesis, University of Sheffield, UK.Google Scholar
  19. Wang, W. Y., Li, G. Q., & Dong, Y. L. (2007). Experimental study and spring-component modelling of extended end-plate joints in fire. Journal of Constructional Steel Research, 63(8), 1127–1137.CrossRefGoogle Scholar

Copyright information

© Korean Society of Steel Construction 2018

Authors and Affiliations

  1. 1.Department of Civil EngineeringShanghai Jiao Tong UniversityShanghaiPeople’s Republic of China

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