| 吴轶,莫海鸿,杨 春.三维排架渡槽中水的调频液体阻尼效应[J].水利学报,2005,36(9):1115-1120 |
| 三维排架渡槽中水的调频液体阻尼效应 |
| Analysis on tuned liquid damper effect of 3-D frame supported aqueduct |
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| DOI： |
| 中文关键词: 三维排架 渡槽结构 调频液体阻尼效应 流固耦合 地震响应 |
| 英文关键词: 3-D frame supported aqueduct tuned liquid damping (TLD) effect coupling of fluid and structure arbitrary Lagrangian-Eulerian FEM added mass method |
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| 中文摘要: |
| 本文分别采用任意拉格朗日-欧拉有限元方法和附加质量法分析三维梁式排架-渡槽结构体系的动力特性。通过两种计算方法的对比分析，研究渡槽中的水体对排架-渡槽结构体系的影响作用。研究表明，渡槽中水体的大幅晃动作用对渡槽结构体系起到了调频液体阻尼器类似的减震作用，且水体的晃动作用越强，水体对结构的这种减震作用越强，渡槽中水体大幅晃动产生的减震作用随结构自身特性和外激励不同而不同。文中建议，在渡槽结构的抗震设计中，不应忽略水体大幅晃动对渡槽槽体和下部支撑的影响作用。 |
| 英文摘要: |
| The arbitrary Langrangian-Eulerian (ALE) finite element method and added mass method are applied to analyze the dynamic characteristics of the 3-D frame supported aqueduct respectively. The effect of water on aqueduct structure is found by comparing the analysis results of these two methods. The results show that the water sloshing has tuned liquid damper (TLD) effect on aqueduct structures. The stronger sloshing of the water is, the more significant the effect of damping will be. The damping effect due to the large amplitude sloshing may change with the structure of the aqueduct and external actions. It is pointed out that the effect of large amplitude sloshing on the supporting system of the aqueduct should be considered in the aseismic design of the aqueduct. |
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