期刊
THIN-WALLED STRUCTURES
卷 45, 期 1, 页码 24-36出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.tws.2007.01.008
关键词
concrete-filled steel tubes (CFST); concrete; design; torsion; bearing capacity; parametric analysis; design method
In practice, concrete-filled steel tubes (CFST) are often subjected to torsion. To date, such a problem however has not been addressed satisfactorily by design codes. The present study is thus an attempt to study the torsional behaviours of concrete-filled thin-walled steel tubes. ABAQUS software is used in this paper for the finite element analysis (FEA) of CFST subjected to pure torsion. A comparison of results calculated using this modelling shows good agreement with test results. The FEA modelling was used to investigate the influence of important parameters that determine the ultimate torsional strength of the composite sections. The parametric studies provide information for the development of formulae to calculate the ultimate torsional strength, as well as the torsional moment versus torsional strain curves of the composite sections. (c) 2007 Elsevier Ltd. All rights reserved.
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