| 刚性连体位置对非对称双塔连体结构动力可靠度的影响 |
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| 引用本文： | 李春锋,杜永峰,李慧.刚性连体位置对非对称双塔连体结构动力可靠度的影响[J].保鲜与加工,2015(4):19-27. |
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| 作者姓名： | 李春锋 杜永峰 李慧 |
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| 作者单位： | 河西学院 土木工程学院,甘肃 张掖 734000； 兰州理工大学 防震减灾研究所， 兰州 730050,兰州理工大学 防震减灾研究所， 兰州 730050；西部土木工程防灾减灾教育部工程研究中心， 兰州 730050,兰州理工大学 防震减灾研究所， 兰州 730050；西部土木工程防灾减灾教育部工程研究中心， 兰州 730050 |
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| 基金项目： | 甘肃省科技计划(145RJZG032);甘肃省建设科技攻关项目(JK2013-14);甘肃省高等学校科学研究项目(2013B-82) |
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| 摘 要： | 考虑地震动的非平稳性，变化连体位置，对非对称双塔连体结构运用虚拟激励法进行非平稳随机激励下的动力可靠度研究。采用刚度退化的Bouc-Wen模型模拟塔楼各楼层的滞变特性，建立非线性化动力方程。运用混合精细积分法对每一时刻的响应进行求解，得到连体位置变化时非对称连体结构在非平稳随机激励下的时变方差。基于首次超越破坏准则与Markov假定，研究非平稳随机地震激励下连体结构的动力可靠度。运用上述理论，在8度罕遇地震作用下对某非对称双塔连体结构进行随机地震响应与动力可靠度分析。研究结果表明，地震作用下结构的层间位移响应呈现强烈的非平稳性，变化连体位置对连体结构的随机地震响应与动力可靠度将产生显著影响。
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| 关 键 词： | 高层建筑 非对称双塔连体结构 Bouc-Wen模型 虚拟激励法 非平稳随机响应 动力可靠度 |
| 收稿时间： | 3/1/2014 12:00:00 AM |
Influence of rigid-connection position on dynamic reliability of asymmetric double-tower connected tall building |
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| Li Chunfeng,Du Yongfeng and Li Hui.Influence of rigid-connection position on dynamic reliability of asymmetric double-tower connected tall building[J].Storage & Process,2015(4):19-27. |
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| Authors: | Li Chunfeng Du Yongfeng and Li Hui |
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| Institution: | School of Civil Engineering, Hexi University, Zhangye 734000, Ganshu, P. R. China; Institute of Earthquake Protection and Disaster Mitigation, Lanzhou University of Technology, Lanzhou 730050, P. R. China,Institute of Earthquake Protection and Disaster Mitigation, Lanzhou University of Technology, Lanzhou 730050, P. R. China; Western Center of Disaster Mitigation in Civil Engineering, Ministry of Education, Lanzhou, 730050, P. R. China and Institute of Earthquake Protection and Disaster Mitigation, Lanzhou University of Technology, Lanzhou 730050, P. R. China; Western Center of Disaster Mitigation in Civil Engineering, Ministry of Education, Lanzhou, 730050, P. R. China |
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| Abstract: | The earthquake ground motion is non-stationary, and the dynamic reliability of the connected structure with different locations of connector is investigated using pseudo excitation method. The stiffness degradation of Bouc-Wen model is used to simulate the hysteresis of the tower structure, and the nonlinear motion equation of the connected structure is established. The system response for each moment is calculated by mixed precise integration method and the time-history variance of the structure under non-stationary earthquake excitation is obtained. Based on the first passage criterion and Markov assumption, the connected structure reliability are calculated. As a result, the random earthquake response and dynamic reliability of tall double-tower linked with strong connected structure subjected to 8 degree rare earthquakes are analyzed on base of those theories. The results show that the tower displacement responses are non-stationary under the earthquakes, and the change of connector location has a significant impact on the random seismic response and dynamic reliability of the strong connected structure. |
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| Keywords: | tall building asymmetric double-tower connected structure Bouc-Wen model pseudo excitation method non-stationary random response dynamic reliability |
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