| 摘要: |
| 推导了溢流坝结构的水弹性相似条件，提出了多相水弹性相似模拟技术，使水流运动－砼结构与金属结构振动，以及水流与结构、结构与结构的耦合作用，同时满足水弹性相似要求。通过水工模型、结构模型及水弹性相似模型，全面地研究了水流流态、结构动荷载、结构动特性、流激结构振动情况，以及抑振措施。 |
| 关键词: 水弹性相似,流激振动,闸门振动,溢流坝结构振动 |
| DOI： |
| 分类号:TV64 |
| 基金项目: |
|
| Flow-induced vibration of Feilaixia spillway dam structure |
|
Yan Shiwu,Luo Shaoze, Chen Fazhan
|
|
Nanjing Hydraulic Research Institute
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| Abstract: |
| The spillway dam is a complex three-dimensional structure system formed by different types of structure. In practice, some structural damage may even result in an accident for the whole project. The flow pattern and hydrodynamic load acting on structures are studied through the hydraulic model test. By means of experimental modal analysis technique, dynamic characteristics for each structures are obtained. In order to study flow-induced vibrations, the multisimilarity model for the complex structure is made which satisfies simultaneously hydrodynamic, concrete and metal structure vibrations, and mutual interaction of fluid and structure as well as structures each other. |
| Key words: Hydro-elasticity similarity, flow-induced vibration, gate vibration,spillway dam vibration |
