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钢桥用粘弹性阻尼器抑制共振的分析研究

ANALYTICAL PREDICTION OF STEEL BRIDGE WITH VISCOELASTIC DAMPERS TO RESTRAIN RESONANCE

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【作者】 朱晞; 刘保东; 倪永军; 李宏年;

【Author】 Zhu XI; Liu Baodong; Ni Yongiun; Li Hongnian(College of Civil Engineering and Afrchitecture Northern Jiaotong University Beijing 100044)

【机构】 北方交通大学土建学院!北京; 100044;

【摘要】 在对3M公司ISD110和我国9050两种粘弹性材料性能研究的基础上,探讨了用上述两种材料制成适合于铁路钢桥减振使用的阻尼器的构造和连接方式.并用计算机仿真程序,对3个跨度从20m至32m的3个钢板梁工点进行了不同车速下钢梁动力响应的仿真研究.研究结果说明了所建议的粘弹性阻尼器能有效地减小钢梁的位移响应.

【Abstract】 Based on investigating the behaviors of viscoelastic materials of ISD100(3M) and 9050 (China), it is developed the details and the connected types for dampers to the vibration response of railway steel bridges. Using the simulating computer program, the simulation studies of three steel bridges were performed for the response of steel girders under different train speeds. It is shown that the proposed proposed viscoelastic damper can effectively reduce the displacement response of steel girders.

【关键词】 钢桥; 提速; 共振; 粘弹性阻尼器;
【Key words】 steel bridge; elevating speed; resonance; viscoelastic damper;
  • 【分类号】U448.23
  • 【下载频次】90
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