[1]杜东升,李爱群,丁幼亮,等.高耸机场塔台结构地震反应的高振型影响分析[J].东南大学学报(自然科学版),2003,33(5):588-592.[doi:10.3969/j.issn.1001-0505.2003.05.011]
　Du Dongsheng,Li Aiqun,Ding Youliang,et al.Influence of high modes of high-rise control tower of airport to seismic response[J].Journal of Southeast University (Natural Science Edition),2003,33(5):588-592.[doi:10.3969/j.issn.1001-0505.2003.05.011]
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高耸机场塔台结构地震反应的高振型影响分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
33
期数:
2003年第5期
页码:
588-592
栏目:
土木工程
出版日期:
2003-09-20

文章信息/Info

Title:
Influence of high modes of high-rise control tower of airport to seismic response
作者:
杜东升1;  李爱群1;  丁幼亮1;  石启印1;  李培彬2;  娄宇2
1 东南大学土木工程学院,南京 210096; 2 中国电子工程设计院,北京100840
Author(s):
Du Dongsheng1;  Li Aiqun1;  Ding Youliang1;  Shi Qiyin1;  Li Peibin2;  Lou Yu2
1 College of Civil Engineering, Southeast University, Nanjing 210096, China
2 China Electric Engineering Design Institute, Beijing 100840, China
关键词:
塔台结构;  高振型影响;  地震反应
Keywords:
control tower of airport;  influence of high modes;  seismic response
分类号:
TU311.3
DOI:
10.3969/j.issn.1001-0505.2003.05.011
摘要:
以顶部带有2层钢框架的北京机场控制塔台的振动台试验模型为计算对象,采用基于振型叠加的结构地震响应时程分析法,计算了该高耸塔台模型在地震作用下各个振型的时程反应.计算中采用了Rayleigh阻尼,由于结构是钢-钢筋混凝土结构,振型阻尼比不易确定,在本次计算中振型阻尼比取振动台试验测出的第1阶和第2阶振型阻尼比.结果表明高振型对塔台结构的最大位移的影响不大,但高阶振型对塔台结构地震剪力的影响却不容忽视.将计算结果与试验值进行了对比分析,验证了所得结论的正确性.
Abstract:
The seismic response of each vibration mode of the high-rise tower model is obtained based on a mode-superposition time-history analysis method with respect to the control tower with a steel frame top at the Beijing airport. The Rayleigh damping is assumed in the analysis with the modal damping ratio taken as the first modal and the second modal damping ratio measured in the shaking table test due to the steel-RC composite structure. The calculation results reveal that the high-order modes contribute a little to the seismic displacement of the tower; however, the high-order modes play an important role in the seismic shear force of the tower. The analysis of the calculation results compared to the test results verify the correctness of the conclusion presented in this paper.

参考文献/References:

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[2] 李爱群,石启印,杜东升,等.首都机场新塔台模型模拟地震振动台试验研究报告[R].东南大学土木工程学院,2002.
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备注/Memo

备注/Memo:
作者简介: 杜东升(1977—),男,博士生; 李爱群(联系人),男,博士,教授,博士生导师,aiqunli@public1.ptt.js.cn.
更新日期/Last Update: 2003-09-20