摘要
高层连体结构采用集中布置消能减震装置的消能减震方案存在耗能能力需求高、响应分布不均匀等问题。利用惯容黏滞阻尼器(VID)放大耗能能力的优势,提出基于VID的消能减震方案,以及考虑结构整体减震效果的消能减震设计方法。结合质点系模型和随机振动理论评价连体结构的地震响应,通过在连体结构连廊处集中布置VID控制结构响应,定义连体结构整体减震指标评价结构响应的控制效果。将设计方法应用于实际结构,分析表明,通过在连廊处集中布置VID,能合理有效地降低结构响应、改善响应分布;VID的控制效果受连廊位置的影响,本研究在几种连廊及VID的布置方案中比选出最优方案。
Seismic mitigation of tall adjacent structures by concentratedly setting supplemental dampers may have drawbacks such as rather high demand of energy dissipation of the dampers,and uneven distribution of seismic responses.In this paper,by utilizing the energy dissipation amplification of viscous inerter dampers(VIDs),the seismic mitigation scheme based on VID as well as the design method considering overall seismic mitigation effect of the structures are presented.In the presented method,seismic response of the adjacent structures is evaluated based on particle system model and random vibration theory.Structural response is mitigated by concentratedly setting VIDs at the corridors.The overall seismic mitigation index of adjacent structures is defined to evaluate the response mitigation effect.The design method is applied on a real structure.According to the investigation,structure response can be reasonably and effectively mitigated by the concentratedly setting VIDs at the corridors,meanwhile the response distribution can be improved.Effect of VID is influenced by locations of the corridors,and from different setting schemes of corridors and VIDs,the optimal one is determined by the research.
作者
贺辉
刘乐
郝霖霏
金骥
徐丽
HE Hui;LIU Le;HAO Linfei;JIN Ji;XU Li(Guangdong Provincial Key Laboratory of Earthquake Engineering and Applied Technology,Guangzhou University,Guangzhou,Guangdong 510405,China;Key Laboratory of Earthquake Resistance,Earthquake Mitigation and Structural Safety,Ministry of Education,Guangzhou University,Guangzhou,Guangdong 510405,China;Guangdong Boyi Architectural Design Institute Co.,Ltd.,Foshan,Guangdong 528300,China;Logistics Support Center,Shanghai Jiaotong University,Shanghai 200240,China)
出处
《施工技术》
CAS
2020年第5期91-97,共7页
Construction Technology
基金
“十三五”国家重点研发计划(2016YFC0701500,2017YFC0703600)
广东省教育厅创新团队项目(2016KCXTD016)。
关键词
高层建筑
连体结构
惯容黏滞阻尼器
消能减震
设计
随机振动
tall buildings
adjacent structures
viscous inerter damper
seismic mitigation
design
random vibration
