Behavior of external welded flange-bolted web joints of steel structure exposed to fire
HuJun, YaoBin, LI Pei-de
State Key Laboratory of Fire Science,University of Science and Technology of China,Hefei 230027,China
Abstract:
In order to investigate the behavior of external welded flange-bolted web joints of steel structure exposed to fire,a series of experiments were carried out.Influence of fire model and load ratio on the behavior of the joints,failure characteristics and fracture modes of the joints exposed to fire were studied.The experimental results indicated that the fire model has a great influence on the temperature rising as well as temperature distribution of the joints exposed to fire.A slower temperature rising fire will lead to slower temperature rising and more uniform temperature distribution of joint.Decrease of the load ratio will improve the fire-resistant capability of the joint.Furthermore,a highly detailed three-dimensional(3-D) finite element model(FEM) was set up with ANSYS software to predict the behavior of the external welded flange-bolted web joints exposed to fire.Comparisons between the predicted results and the experimental results indicated that FEM has an acceptable degree of accuracy to predict the behavior of this type of joints exposed to fire.
Key words: steel joint fire experimental study finite element modeling
DOI：10.11916/j.issn.1005-9113.2011.01.017
Clc Number:X932
Fund:
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Behavior of external welded flange-bolted web joints of steel structure exposed to fire
本站小编 哈尔滨工业大学/2019-10-23
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