期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：186
期号：2
页码：012055
DOI：10.1088/1755-1315/186/2/012055
语种：English
出版社：IOP Publishing
摘要：Steel-concrete composite beams are environmentally-friendly and cost-effective. The existing specifications have no calculation method for the stability of steel-concrete composite beams in the negative bending area, and the computational results of different theories put forward by scholars are quite different. In this paper, the finite element method is used to compare the three theoretical methods of the critical load in the negative bending moment zone when the length, thickness ratio and the reinforcement ratio of the concrete plate are changed. The analysis shows that the bending energy method is inaccurate and insecure, and the beam on elastic foundation method is more concise and simpler than the bending torsion energy method.
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