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Experimental studies on the material properties of high-strength bolt connection at elevated temperatures

  • Li, Guo-Qiang (Department of Civil Engineering, Tongji University) ;
  • Yin, Ying-Zhi (Department of Civil Engineering, Tongji University) ;
  • Li, Ming-Fei (Department of Civil Engineering, Tongji University)
  • Published : 2002.08.25

Abstract

The high-temperature material properties of steel are very important to the fire resistance analysis of high-strength bolt connections. This paper reports on the results of the experimental studies on the high-temperature properties of 20 MnTiB steel which is widely used in high-strength bolts, and the friction coefficient of 16Mn steel plates at elevated temperature which is a necessary parameter for bolted frictional connection analysis. The test data includes yield strength, limit strength, modulus of elasticity, elongation and expansion coefficient of 20MnTiB steel at elevated temperature, and the friction coefficients between two 16Mn steel plates under elevated temperatures and after cooling. Based on the data from the tests, the mathematical models for predicting the mechanical properties of 20MnTiB steel and friction coefficients of 16Mn steel plates have been established.

Keywords

References

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Cited by

  1. Numerical study of a steel sub-frame in fire vol.86, pp.15-16, 2008, https://doi.org/10.1016/j.compstruc.2008.01.006
  2. Numerical Modelling of the Influence of Joint Typologies on the 3D Behaviour of a Steel Sub-Frame Under a Natural Fire vol.46, pp.1, 2010, https://doi.org/10.1007/s10694-009-0099-3
  3. Mechanical properties of heat-treated high tensile structural steel at elevated temperatures vol.98, 2016, https://doi.org/10.1016/j.tws.2015.04.010
  4. Behavior of Steel Column-Trees under Fire Conditions vol.144, pp.9, 2018, https://doi.org/10.1061/(ASCE)ST.1943-541X.0002135