(1 广州大学土木工程学院, 广州 510006; 2 上海优耐建筑工程咨询有限公司, 上海 200092)

摘要: 给出了消能减震结构时程分析中阻尼器有效刚度及结构等效阻尼比的计算步骤,研究了消能减震结构阻尼器有效刚度、结构等效阻尼比如何取值并给出取值建议,讨论了消能减震结构考虑双向地震作用时地震工况主次方向的确定方法. 以某框架结构为例,对比消能减震结构时程分析与等效结构反应谱分析. 结果表明,本文所提出的取值方法合理,双向地震工况主次方向确定方法可行;按本文取值方法确定的等效结构受力情况符合消能减震结构实际受力情况,等效结构的反应谱分析结果能够包络时程分析结果,采用该等效结构进行结构设计是安全可靠的.

关键词: 消能减震结构; 等效阻尼比; 有效刚度; 时程分析; 反应谱分析

中图分类号:TU352. 1 文献标志码:A 文章编号:1002-848X(2022)05-0043-05

DOI:10. 19701 / j. jzjg. ZJ210023

Study on value method of effective stiffness and structural equivalent damping ratio of energydissipation and shock absorption structure

ZHOU Yun1, HAN Yuxian1, SHANG Chenghao1, CHEN Qingxiang2

(1 School of Civil Engineering, Guangzhou University, Guangzhou 510006, China;2 Shanghai Younai Construction Engineering Consulting Co., Ltd., Shanghai 200092, China)

Abstract: The calculation steps of damper effective stiffness and structural equivalent damping ratio in time historyanalysis of energy dissipation and shock absorption structure were presented. The value of damper effective stiffness andstructural equivalent damping ratio of energy dissipation and shock absorption structure were studied, and suggestions ofvalue were given. The method to determine the main and secondary directions of seismic working conditions for energydissipation and shock absorption structures considering the two-way seismic action was discussed. Taking a frame structureas an example, time-history analysis of energy dissipation and shock absorption structure and response spectrum analysis ofequivalent structure were compared. The results show that the proposed value method is reasonable and the method todetermine the main and secondary directions of two-way seismic action is feasible. The stress condition of the equivalentstructure determined by this value method is in accordance with the actual stress condition of energy dissipation and shockabsorption structure, and the response spectrum analysis results of the equivalent structure can enclose the time-historyanalysis results, so it is safe and reliable to use the equivalent structure for structural design.

Keywords:energy dissipation and shock absorption structure; equivalent damping ratio; effective stiffness; time historyanalysis; response spectrum analysis

∗国家重点研发计划资助(2017YFC0703600) .

第一作者:周云,博士,教授,博士生导师,主要从事消能减震技术研究,Email:zhydxs@ 163. com.

[引用本文] 周云,韩宇娴,商城豪,等. 消能减震结构阻尼器有效刚度及结构等效阻尼比取值方法研究[ J] . 建筑结构,2022,52(5) :43-47,54. ZHOU Yun,HAN Yuxian,SHANG Chenghao,et al. Study on value method of effectivestiffness and structural equivalent damping ratio of energy dissipation and shock absorption structure [ J ] . BuildingStructure,2022,52(5) :43-47,54.