[1]吴竞,楼梦麟.双向地震作用下弱连接双塔结构Rayleigh阻尼矩阵的建模问题[J].地震工程与工程振动,2019,39(03):061-72.[doi:10.13197/j.eeev.2019.03.61.wuj.007]
 WU Jing,LOU Menglin.Estabulish problem for Rayleigh damping matrix model of weakly connected double-tower structures under bi-directional earthquakes[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2019,39(03):061-72.[doi:10.13197/j.eeev.2019.03.61.wuj.007]
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双向地震作用下弱连接双塔结构Rayleigh阻尼矩阵的建模问题
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《地震工程与工程振动》[ISSN:/CN:]

卷:
39
期数:
2019年03
页码:
061-72
栏目:
论文
出版日期:
2019-06-30

文章信息/Info

Title:
Estabulish problem for Rayleigh damping matrix model of weakly connected double-tower structures under bi-directional earthquakes
作者:
吴竞1 楼梦麟12
1. 同济大学 浙江学院 土木工程系, 浙江 嘉兴 314000;
2. 同济大学 土木工程防灾国家重点实验室, 上海 200092
Author(s):
WU Jing1 LOU Menglin12
1. Department of Civil Engineering, Tongji Zhejiang College, Jiaxing 314000, China;
2. State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China
关键词:
双塔结构双向地震作用Rayleigh阻尼矩阵自振频率频谱特征
Keywords:
two tower structuresbi-directional seismic actionrayleigh damping matrixnatural frequencyspectrum characteristics
分类号:
TU311.3
DOI:
10.13197/j.eeev.2019.03.61.wuj.007
摘要:
以一双塔式直流电压发生器为例,通过4条地震波水平单向、水平和竖直双向激励下双塔结构地震反应峰值计算结果的对比分析,研究双向地震激励下弱连接双塔结构Rayleigh阻尼矩阵的合理建模方式。研究结果表明:当结构的自振基频远低于输入地震波主要分量的激励频率时,在建立Rayleigh阻尼矩阵过程中应考虑输入地震的频谱特性的影响。在仅有水平单向地震激励时,可选用地震激励水平方向的本体塔架振动第1阶自振频率和水平地震波反应谱的峰值频率作为参数频率用于计算Rayleigh阻尼矩阵中的2个比例系数;当水平和竖直双向地震激励时,2个参数频率的选择涉及因数更为复杂,应综合考虑双塔结构的自振频率和输入地震动的特征频率的不同影响。
Abstract:
Taking a pair of tower DC voltage generators as an example, the comparative analysis of the peak results of seismic response of two tower structures under unidirectional, horizontal and vertical bidirectional excitation of four seismic waves is carried out to study the Rayleigh damping of weakly connected twin tower structures under two-way seismic excitation. Reasonable modeling of the matrix. The results show that when the fundamental frequency of the structure is much lower than the excitation frequency of the main component of the input seismic wave, the influence of the spectral characteristics of the input seismic should be considered in the process of establishing the Rayleigh damping matrix. In the case of only horizontal one-way seismic excitation, the first-order natural vibration frequency of the main tower vibration in the horizontal direction of the seismic excitation and the peak frequency of the horizontal seismic wave response spectrum can be used as the parameter frequency to calculate the two proportional coefficients in the Rayleigh damping matrix. When horizontal and vertical two-way seismic excitation, the selection of two parameter frequencies involves more complicated factors, and the different effects of the natural frequency of the two-tower structure and the characteristic frequency of the input ground motion should be considered.

参考文献/References:

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相似文献/References:

[1]王丰,李宏男.双向地震作用下等延性系数的标准化滞回能量反应谱[J].地震工程与工程振动,2013,33(06):178.
 WANG Feng,LI Hongnan.Standard hysteretic energy spectra of constant ductility factors for bi-directional earthquake motions[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2013,33(03):178.
[2]姬淑艳,李英民,刘立平,等.考虑双向水平地震作用的结构设计问题研究[J].地震工程与工程振动,2006,26(05):068.
 Ji Shuyan,Li Yingmin,Liu Liping,et al.Study on bi-directional seismic action in structural seismic design[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2006,26(03):068.

备注/Memo

备注/Memo:
收稿日期:2018-12-3;改回日期:2019-2-20。
基金项目:国家自然科学基金项目(91315301)
作者简介:吴竞(1982-),女,副教授,硕士,主要从事工程结构防灾减灾研究.E-mail:mirror-5@tjzj.edu.cn
通讯作者:楼梦麟(1947-),男,教授,博士,主要从事工程结构防灾减灾,土-结构相互作用研究.E-mail:93010@tongji.edu.cn
更新日期/Last Update: 1900-01-01