某大悬挑桁架结构消能减震设计研究  

Research on seismic energy dissipation design of a large suspension truss structure

作　　者：李庆武[1] 倪建公[1] 瞿革[1] 蒋瓅[1] 肖炳辉[1] LI Qingwu;NI Jiangong;QU Ge;JIANG Li;XIAO Binghui(China Shipbuilding NDRI Engineering Co.,Ltd.,Shanghai 200063,China)

机构地区：[1]中船第九设计研究院工程有限公司,上海200063

出　　处：《建筑结构》2021年第8期32-36,共5页Building Structure

摘　　要：以某大悬挑桁架结构为分析实例,采用动力弹塑性时程分析方法对大悬挑结构进行消能减震设计,对减震效果及布置方案进行探讨。结果表明:对于大悬挑结构,通过布置黏滞阻尼器可以有效地减少结构在地震作用下的竖向位移、竖向加速度和杆件内力;黏滞阻尼器布置于悬挑结构端部位置的减震效果优于其布置在悬挑结构根部;不同的阻尼器布置方案对减震效果、建筑功能及原结构刚度产生不同的影响,设计中需综合考虑。A large suspension truss structure was used as an analysis example, and the dynamic elastic-plastic time analysis method was used to design the large suspension structure for seismic energy dissipation design, and the damping effect and layout plan were discussed. The results show that for large suspension structures, the vertical displacement, vertical acceleration and internal force of the members under seismic action can be effectively reduced by laying out viscous dampers;the damping effect of the viscous dampers arranged at the end position of the suspension structure is better than that at the root of the suspension structure;different layout schemes of dampers have different effects on damping effect, building function and original structural stiffness, which need to be comprehensively considered in the design.

关 键 词：大悬挑结构 黏滞阻尼器 减震效果 减震方案 

分 类 号：TU312.1[建筑科学—结构工程]