| 消能减震技术在某大跨空间桁架结构中的应用研究 |
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| 引用本文： | 林颖捷,杨海勇,何瑶,潘鹏.消能减震技术在某大跨空间桁架结构中的应用研究[J].工程抗震与加固改造,2020(1):51-56. |
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| 作者姓名： | 林颖捷 杨海勇 何瑶 潘鹏 |
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| 作者单位： | 福州滨海临空开发建设有限公司;清华大学基建规划处;北京羿射旭科技有限公司;清华大学土木工程安全与耐久教育部重点实验室;清华大学城市轨道交通绿色与安全建造技术国家工程实验室 |
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| 基金项目： | 国家重点研发计划资助(2016YFC0701901)。 |
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| 摘 要： | 为研究屈曲约束支撑(BRB)与黏滞消能器(VFD)对大跨空间桁架结构的减震控制作用,在某会展中心大跨空间桁架结构部位设置BRB与VFD,利用有限元分析软件SAP2000对大跨空间桁架结构进行罕遇地震作用下的非线性时程分析。研究地震波输入时BRB与VFD对大跨空间桁架结构的减震控制机理,以空间桁架整体结构的位移、加速度及构件内力为减震控制指标,对比分析采用不同方案对结构抗震性能的影响。结果表明:在大跨空间桁架结构部分设置消能器可以有效地控制桁架在地震作用下的受力与变形,改善桁架部分的抗震性能;大震下消能器的滞回曲线均较饱满,消能器耗能能力良好;大跨空间桁架结构布置BRB较布置VFD减震效果更优。
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| 关 键 词： | 大跨空间桁架结构 消能减震 屈曲约束支撑 黏滞消能器 弹塑性时程分析 |
Study on application of energy dissipation technology in a large-span spatial truss structure |
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| Lin Ying-jie,Yang Hai-yong,He Yao,Pan Peng.Study on application of energy dissipation technology in a large-span spatial truss structure[J].Earthquake Resistant Engineering and Retrofitting,2020(1):51-56. |
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| Authors: | Lin Ying-jie Yang Hai-yong He Yao Pan Peng |
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| Affiliation: | (Fuzhou Binhai Linkong Development and Construction Co.Ltd,Fuzhou 350209,China;Capital Construction Planning Office,Tsinghua University,Beijing,100084,China;Beijing Yishexu Technology Co,Ltd,Beijing 100050,China;Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry,Tsinghua University,Beijing 100084,China;National Engineering Laboratory for Green and Safe Construction Technology in Urban Rail Transit,Tsinghua University,Beijing 100084,China) |
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| Abstract: | The seismic damage control is investigated for large-span space structures by placing BRB and VFD on steel truss roof.The Elasto-plastic time history analysis is carried out by SAP2000 to study the seismic behavior of the structure under rare earthquakes.Taking the displacement and acceleration in the horizontal direction as well as the member forces in the roof structure as the targets of vibration control,the analytical results indicate that the seismic responses can be effectively controlled via installing BRB and VFD on the space truss structure.The results show that:the force and deformation of the roof truss under earthquake are effectively controlled by installing the dampers in the roof truss,and the seismic performance of the roof truss is also improved;the full hysteretic loop indicates that the damper works well;the seismic performance of the roof truss is better by equipped with BRB than VFD. |
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| Keywords: | large-span spatial truss structure energy dissipation BRB VFD nonlinear time-history analysis |
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