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Structural behaviors of steel roof truss exposed to pool fire

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Abstract

Experimental research was conducted to study the structural behaviors of a steel roof truss model without fire-proof coating under pool fire conditions. The data of temperature distribution and displacements of typical members were obtained. It is found that the temperature distribution of environment inside the structure, which is found to be in accordance with the multi-zone model with height, has a decisive effect on the temperature evolution of steel members. Besides, it can also be observed that due to the restriction and coordination among the truss members in the localized fire, the maximum relative deflection, which occurs at the mid-span of the top chord, is relatively slight and has not exceeded 1 mm under experimental conditions. On the other hand, the column experiences a notable thermal expansion during the test. Then, a finite element model is presented and validated by the test results.

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Authors and Affiliations

  1. Institute of Disaster Prevention Science and Safety Technology, Central South University, Changsha, 410075, China

    Chang-kun Chen  (陈长坤) & Wei Zhang  (张威)

  2. State Key Laboratory of Fire Science (University of Science and Technology of China), Hefei, 230026, China

    Chang-kun Chen  (陈长坤)

Authors
  1. Chang-kun Chen  (陈长坤)
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  2. Wei Zhang  (张威)
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Correspondence to Chang-kun Chen  (陈长坤).

Additional information

Foundation item: Project(50706059) supported by the National Natural Science Foundation of China; Project(HZ2009-KF05) supported by Open Fund of State Key Laboratory of Fire Science of University of Science and Technology in China; Project supported by the Fundamental Research Funds for the Central Universities of China

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Chen, Ck., Zhang, W. Structural behaviors of steel roof truss exposed to pool fire. J. Cent. South Univ. 19, 2054–2060 (2012). https://doi.org/10.1007/s11771-012-1244-6

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  • DOI: https://doi.org/10.1007/s11771-012-1244-6

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