Lateral Buckling Analysis of the Steel-Concrete Composite Beams in Negative Moment Region
Distortional buckling is one of the important buckling models of steel-concrete composite beam in negative moment region. Rotation restraining rigidity and lateral restraining rigidity which steel beam web to bottom plate of steel-concrete composite are the key factors to influence the distortional...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2015/763634 |
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| author | Fengqi Guo Shun Zhou Lizhong Jiang |
| author_facet | Fengqi Guo Shun Zhou Lizhong Jiang |
| author_sort | Fengqi Guo |
| collection | DOAJ |
| description | Distortional buckling is one of the important buckling models of steel-concrete composite beam in negative moment region. Rotation restraining rigidity and lateral restraining rigidity which steel beam web to bottom plate of steel-concrete composite are the key factors to influence the distortional buckling behavior. A comprehensive and intensive study on rotation restraining rigidity and lateral restraining rigidity which steel beam web to bottom plate of I-shaped steel-concrete composite beam in negative moment region is conducted in this paper. Energy variation principle is adopted to deduce the analytical expressions to calculate the rotation restraining rigidity and lateral restraining rigidity. Combined with the buckling theory of axial compression thin-walled bars in elastic medium, the buckling moment is obtained. Theoretical analysis shows that the rotation restraining rigidity and lateral restraining rigidity of steel beam web appear to have a linear relationship with the external loads and could also be negative. Compared with other methods, the results calculated by the proposed expressions agree well with the numerical results by ANSYS. The proposed expressions are more concise and suitable than the existing formulas for the engineering application. |
| format | Article |
| id | doaj-art-83562f9ba39f4e3696a2f30e3d5c3f87 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-83562f9ba39f4e3696a2f30e3d5c3f872025-02-03T05:57:34ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422015-01-01201510.1155/2015/763634763634Lateral Buckling Analysis of the Steel-Concrete Composite Beams in Negative Moment RegionFengqi Guo0Shun Zhou1Lizhong Jiang2School of Civil Engineering, Central South University, Changsha 410075, ChinaSchool of Civil Engineering, Central South University, Changsha 410075, ChinaSchool of Civil Engineering, Central South University, Changsha 410075, ChinaDistortional buckling is one of the important buckling models of steel-concrete composite beam in negative moment region. Rotation restraining rigidity and lateral restraining rigidity which steel beam web to bottom plate of steel-concrete composite are the key factors to influence the distortional buckling behavior. A comprehensive and intensive study on rotation restraining rigidity and lateral restraining rigidity which steel beam web to bottom plate of I-shaped steel-concrete composite beam in negative moment region is conducted in this paper. Energy variation principle is adopted to deduce the analytical expressions to calculate the rotation restraining rigidity and lateral restraining rigidity. Combined with the buckling theory of axial compression thin-walled bars in elastic medium, the buckling moment is obtained. Theoretical analysis shows that the rotation restraining rigidity and lateral restraining rigidity of steel beam web appear to have a linear relationship with the external loads and could also be negative. Compared with other methods, the results calculated by the proposed expressions agree well with the numerical results by ANSYS. The proposed expressions are more concise and suitable than the existing formulas for the engineering application.http://dx.doi.org/10.1155/2015/763634 |
| spellingShingle | Fengqi Guo Shun Zhou Lizhong Jiang Lateral Buckling Analysis of the Steel-Concrete Composite Beams in Negative Moment Region Advances in Materials Science and Engineering |
| title | Lateral Buckling Analysis of the Steel-Concrete Composite Beams in Negative Moment Region |
| title_full | Lateral Buckling Analysis of the Steel-Concrete Composite Beams in Negative Moment Region |
| title_fullStr | Lateral Buckling Analysis of the Steel-Concrete Composite Beams in Negative Moment Region |
| title_full_unstemmed | Lateral Buckling Analysis of the Steel-Concrete Composite Beams in Negative Moment Region |
| title_short | Lateral Buckling Analysis of the Steel-Concrete Composite Beams in Negative Moment Region |
| title_sort | lateral buckling analysis of the steel concrete composite beams in negative moment region |
| url | http://dx.doi.org/10.1155/2015/763634 |
| work_keys_str_mv | AT fengqiguo lateralbucklinganalysisofthesteelconcretecompositebeamsinnegativemomentregion AT shunzhou lateralbucklinganalysisofthesteelconcretecompositebeamsinnegativemomentregion AT lizhongjiang lateralbucklinganalysisofthesteelconcretecompositebeamsinnegativemomentregion |