复合型铅粘弹性阻尼器的性能试验研究
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摘要
介绍了复合型铅粘弹性阻尼器的原理、构造和特点 ,通过对两个阻尼器在不同工况下的性能试验 ,研究了阻尼器的性能 ,给出了复合型铅粘弹性阻尼器的恢复力模型和特征参数。研究结果表明 :复合型铅粘弹性阻尼器具有良好的工作性能 ,在很小的剪切变形 (约 2 0 % )下 ,阻尼器的性能具有椭圆形的粘弹性阻尼器特征 ,剪切变形大于 2 0 %后 ,阻尼器呈现出铅阻尼器的特征 ;阻尼器的恢复力模型可以用考虑强化的双线形模型来描述 ;阻尼器具有较大的变形能力和较好的耗能性能 ,在剪切变形幅值为 5 0 %～ 170 %的情况下 ,其阻尼比在 10 %～ 2 6 %之间变化 ,在单向剪切变形幅值达到 2 5 0 %的情况下 ,阻尼器中的粘弹性材料或连接未出现拉断或拉裂现象
In this paper, the principle configuration and characteristicses of the mixed lead viscoelastic damper are introduced. According to performance test of two dampers in various working condition, the behavior of damper is developed. the restoring force model and characteristic parameters of mixed lead viscoelastic damper are perposed. The result showed that :the mixed lead viscoelastic damper has good working performance. when they undergo moderate shear deformation (≤20%), the behavior of the damper have characteristic of elliptical viscoelastic damper. when their shear deformation is larger than 20%, the damper presents the characteristic of the lead damper. the restoring force model of the damper can be described by considering intensive bilinear model.The damper has major deformation capacity and better energy dissipation. when shear deformation amplitude being 50%～170%, its damper ratio varies between 10%～26%. when unidirectional shear deformation amplitude reaches 250%, the tensile failure or crack phenomenon does not appeared in the viscoelastic material and connection of damper.
In this paper, the principle configuration and characteristicses of the mixed lead viscoelastic damper are introduced. According to performance test of two dampers in various working condition, the behavior of damper is developed. the restoring force model and characteristic parameters of mixed lead viscoelastic damper are perposed. The result showed that :the mixed lead viscoelastic damper has good working performance. when they undergo moderate shear deformation (≤20%), the behavior of the damper have characteristic of elliptical viscoelastic damper. when their shear deformation is larger than 20%, the damper presents the characteristic of the lead damper. the restoring force model of the damper can be described by considering intensive bilinear model.The damper has major deformation capacity and better energy dissipation. when shear deformation amplitude being 50%～170%, its damper ratio varies between 10%～26%. when unidirectional shear deformation amplitude reaches 250%, the tensile failure or crack phenomenon does not appeared in the viscoelastic material and connection of damper.
引文
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[11] 刘冰,周云,邓雪松等.铅橡胶复合阻尼器的性能试验研究[J].地震工程与工程振动,2002,22(5).
[2] T .T .Soong,G .F .Dargush.PassiveEnergyDissipationSystemsinstructureEngineering.JohnWiley&sonsLtd,1997.
[3] 周云、徐彤.耗能减震技术研究及应用的新进展[J].地震工程与工程振动,1999,19(2).
[4] 周云,周福霖,邓雪松.铅阻尼器的研究与应用[J].世界地震工程,1999,15(2).
[5] 周云,徐赵东,赵鸿铁.粘弹性阻尼结构的性能、分析方法及工程应用[J].地震工程与工程振动,1998,18(3).
[6] 周云,徐赵东,邓雪松.粘弹性阻尼器的性能实验研究[J].振动与冲击,2001,20(3).
[7] 周云,徐龙河,李忠献.智能流体减振控制技术的研究与应用[J].世界地震工程,1999,15(4).
[8] 周云,刘季.新型耗能(阻尼)减振器的开发与研究[J].地震工程与工程振动,1998,18(1).
[9] 周云、徐赵东,邓雪松等.组合式铅橡胶复合阻尼器的性能试验研究[J].世界地震工程,2000,16(2).
[10] 周云,邓雪松,徐赵东.铅粘弹性阻尼器性能试验研究[J].地震工程与工程振动,2001,21(1).
[11] 刘冰,周云,邓雪松等.铅橡胶复合阻尼器的性能试验研究[J].地震工程与工程振动,2002,22(5).
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