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(1 廣州大學土木工程學院, 廣州 510006; 2 上海優(yōu)耐建筑工程咨詢有限公司, 上海 200092)
摘要: 給出了消能減震結(jié)構(gòu)時程分析中阻尼器有效剛度及結(jié)構(gòu)等效阻尼比的計算步驟,研究了消能減震結(jié)構(gòu)阻尼器有效剛度、結(jié)構(gòu)等效阻尼比如何取值并給出取值建議,討論了消能減震結(jié)構(gòu)考慮雙向地震作用時地震工況主次方向的確定方法. 以某框架結(jié)構(gòu)為例,對比消能減震結(jié)構(gòu)時程分析與等效結(jié)構(gòu)反應譜分析. 結(jié)果表明,本文所提出的取值方法合理,雙向地震工況主次方向確定方法可行;按本文取值方法確定的等效結(jié)構(gòu)受力情況符合消能減震結(jié)構(gòu)實際受力情況,等效結(jié)構(gòu)的反應譜分析結(jié)果能夠包絡(luò)時程分析結(jié)果,采用該等效結(jié)構(gòu)進行結(jié)構(gòu)設(shè)計是安全可靠的.
關(guān)鍵詞: 消能減震結(jié)構(gòu); 等效阻尼比; 有效剛度; 時程分析; 反應譜分析
中圖分類號:TU352. 1 文獻標志碼:A 文章編號: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
∗國家重點研發(fā)計劃資助(2017YFC0703600) .
第一作者:周云,博士,教授,博士生導師,主要從事消能減震技術(shù)研究,Email:zhydxs@ 163. com.
[引用本文] 周云,韓宇嫻,商城豪,等. 消能減震結(jié)構(gòu)阻尼器有效剛度及結(jié)構(gòu)等效阻尼比取值方法研究[ J] . 建筑結(jié)構(gòu),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.
