| 简谐荷载下橡胶隔震渡槽-水耦合体共振响应机理分析 |
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| 引用本文： | 张华,董明,刘亮.简谐荷载下橡胶隔震渡槽-水耦合体共振响应机理分析[J].应用力学学报,2011,28(4). |
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| 作者姓名： | 张华 董明 刘亮 |
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| 作者单位： | 河海大学,南京,210024 |
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| 基金项目： | 国家自然科学基金(50709006) |
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| 摘 要： | 采用计算流体力学（CFD）方法分析了在简谐激振作用下橡胶支座隔震渡槽槽-水耦合体的共振响应特性,并通过基于水体小幅晃动假设的槽水动力响应理论解进行了验证。结果表明：橡胶支座能将激振的高频分量隔离掉,使得槽-水耦合体不存在理论解所显示的高频共振问题;在接近水体一阶晃动频率的情况下容易发生共振响应;在以一阶水体自振频率的激振作用下,液面波高、动水压力、倾覆力、倾覆力矩均表现出随时间增长的共振放大现象,并且橡胶支座对耦合体的动力响应周期有一定的延长作用。本文对渡槽隔震设计选择隔震周期时,需要避开水体一阶晃动频率提供了参考依据。
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| 关 键 词： | 渡槽 减隔震 共振响应 计算流体力学 |
Resonance mechanism of aqueduct-water coupling system with rubber bearings in harmonic loads |
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| Zhang Hua Dong Ming Liu Liang.Resonance mechanism of aqueduct-water coupling system with rubber bearings in harmonic loads[J].Chinese Journal of Applied Mechanics,2011,28(4). |
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| Authors: | Zhang Hua Dong Ming Liu Liang |
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| Institution: | Zhang Hua Dong Ming Liu Liang(College of Civil Engineering and Transportation,Hohai University,210098,Nanjing,China) |
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| Abstract: | Computational Fluid Dynamics(CFD) methods are to analyze the resonance response of aqueduct-water coupled system with rubber bearings under the harmonic excitation.The dynamic response is compared with the theoretical solution of aqueduct-water based on the assumption of small water sloshing.The results show that the excitation of the rubber bearings can cut off high frequencies,so the high frequency resonances shown in the theoretical solution do not occur for the aqueduct-water coupling system.But the res... |
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| Keywords: | aqueduct isolation resonance CFD |
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