| 设置粘滞阻尼器网架结构的风振响应分析 |
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| 引用本文： | 韩淼,李双池,杜红凯,韩蓉.设置粘滞阻尼器网架结构的风振响应分析[J].工程抗震与加固改造,2020(1):45-50. |
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| 作者姓名： | 韩淼 李双池 杜红凯 韩蓉 |
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| 作者单位： | 北京未来城市设计高精尖创新中心 |
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| 基金项目： | 国家重点研发计划(2016YFC0700700)。 |
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| 摘 要： | 建立大跨平屋盖网架结构数值模拟分析模型,施加风洞模型试验获得的屋盖节点风压时程,分析附加粘滞阻尼器对屋盖结构风致振动响应减振效果,结果表明,附加粘滞阻尼器对大跨网架结构的风致振动响应可取得较好的减振效果;阻尼器布置数量增多,屋盖结构风致振动响应减振效果增强,但受阻尼器布设位置影响,距离较远时效果减弱。非线性阻尼器减振效果优于线性阻尼器,随着阻尼指数的增加减振效果减弱。
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| 关 键 词： | 大跨平屋盖 粘滞阻尼器 风振响应 减振 |
Wind-induced vibration response analysis of grid structures with viscous dampers |
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| Han Miao,Li Shuang-chi,Du Hong-kai,Han Rong.Wind-induced vibration response analysis of grid structures with viscous dampers[J].Earthquake Resistant Engineering and Retrofitting,2020(1):45-50. |
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| Authors: | Han Miao Li Shuang-chi Du Hong-kai Han Rong |
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| Affiliation: | (Beijing Advanced Innovation Center for Future Urban Design,Beijing University of Civil Engineering and Architecture,Beijing 100044,China) |
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| Abstract: | The numerical simulation analysis model of large-span flat roof grid structure is established,the wind pressure time history of roof joints obtained from wind tunnel model test is applied,and the effect of additional viscous damper on the wind-induced vibration response of roof structure is analyzed.The results show that:the additional viscous damper can achieve a better damping effect on the wind-induced vibration response of long-span space truss structure;with the increase of the number of dampers,the damping effect of the wind-induced vibration response of the roof structure is enhanced,but the effect is weakened when the distance is relatively long due to the influence of the damper location.The damping effect of nonlinear damper is better than that of linear damper,and the damping effect decreases with the increase of damping index. |
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| Keywords: | long-span flat roof viscous damper wind-induced response vibration reduction |
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