A Simplified Model for Coupled Fire-Structure Analysis and Its Application

CHEN Shi-cai; XU Shan; ZHANG Lei; YAN Wei-ming

doi:10.21656/1000-0887.370351

Volume 38 Issue 8

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CHEN Shi-cai, XU Shan, ZHANG Lei, YAN Wei-ming. A Simplified Model for Coupled Fire-Structure Analysis and Its Application[J]. Applied Mathematics and Mechanics, 2017, 38(8): 888-898. doi: 10.21656/1000-0887.370351

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A Simplified Model for Coupled Fire-Structure Analysis and Its Application

doi: 10.21656/1000-0887.370351

¹Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education,Beijing University of Technology, Beijing 100124, P.R.China;²Key Laboratory of Earthquake Engineering and Structural Retrofit of Beijing, Beijing University of Technology, Beijing 100124, P.R.China

Funds: The National Natural Science Foundation of China(51678016;51278516)

Received Date: 2016-11-15
Rev Recd Date: 2016-11-23
Publish Date: 2017-08-15

Abstract

Abstract

To consider the actual fire characteristics in the fire response analysis of building structures and simplify the complex relationship between the fire analysis model and the structural finite element analysis model, a spatio-temporal model of fire temperature and heat flux boundary for heat conduction analysis was developed. The model adopted the 2-way orthogonal polynomial approach to fit the discrete data from fire simulation and obtained the continuous spatial polynomial equations, which was proved to be accurate for capturing the distribution of temperature and heat flux required in heat conduction analysis and thermo-mechanical coupling analysis. Finally, the model was applied through user subroutines UTEMP and DFLUX in ABAQUS to the fire resistance analysis of a new archive building in Beijing. The results show that this method can be used to combine fire simulation and structural analysis for safety evaluation of structures under fire.
- fire resistance,
- fire characteristic,
- spatio-temporal model,
- simplified method

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References(15)

References

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