| 潘旦光,楼梦麟,李遇春.渡槽风毁事例分析[J].水利学报,2001,32(9):0092-0096 |
| 渡槽风毁事例分析 |
| Case study of a wind destroyed aqueduct |
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| DOI： |
| 中文关键词: 渡槽 风毁机理 抗风设计 有限元 |
| 英文关键词: aqueduct wind destroyed mechanism wind resistance design FEM |
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| 中文摘要: |
| 本文利用有限元方法对我国某渡槽风毁事故进行空间内力分析。初步分析结果表明：在风荷载作用下，由于联系梁和支座处塑性铰的形成，使原结构变成可动机构而失稳破坏。在此基础上提出，除增加联系梁的截面尺寸外，同时加设剪刀撑的改进建议，使结构在造价增加不大的条件下，即可具有较好的抗风能力。可供类似工程结构设计参考。 |
| 英文摘要: |
| A wind destroyed aqueduct is analyzed by using FEM to findout the cause of failure. The result shows that under the action of wind pressure the connection between the beam and supporting base becomes a plastic hinge forming the whole structure working as a movable mechanism and causing the failure of the aqueduct. On this basis, the measure for enhancing the resistance to wind of the aqueduct, including the increase of beam cross section and installation of diagonal braces, is recommended. |
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