（中船第九设计研究院工程有限公司， 上海 200063）

［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。

［关键词］大悬挑结构；黏滞阻尼器；减震效果；减震方案

中图分类号：TU312+.1文献标识码：A文章编号：1002-848X(2021)08-0032-05

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

LI Qingwu, NI Jiangong, QU Ge, JIANG Li, XIAO Binghui

(China Shipbuilding NDRI Engineering Co., Ltd., Shanghai 200063， China)

Abstract: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.

Keywords:large suspension structure;viscous damper;damping effect;damping scheme

作者简介：李庆武，硕士，工程师，Email：leeqingwu@gmail.com；

通信作者：蒋瓅，硕士，工程师，Email：Jiangli@ndri.sh.cn。