| 考虑竖向地震作用的LRB隔震结构优化设计 |
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| 引用本文： | 张延年,郭鹏飞,董锦坤,朱朝艳. 考虑竖向地震作用的LRB隔震结构优化设计[J]. 哈尔滨工业大学学报, 2009, 0(12): 190-193 |
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| 作者姓名： | 张延年 郭鹏飞 董锦坤 朱朝艳 |
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| 作者单位： | 沈阳建筑大学,土木工程学院,沈阳,110015;辽宁工业大学,土木建筑学院,辽宁,锦州,121001 |
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| 基金项目： | “十一五”国家科技支撑计划课题(2006BAJ03A01-5);建设部研究开发项目(2008-k3-10) |
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| 摘 要： | 为了研究竖向地震作用对LRB隔震结构的影响,并改善其隔震效果,建立了耦合地震作用下LRB隔震结构的地震反应分析模型并推导出运动微分方程.以7层LRB隔震结构为例进行地震反应分析,研究结果表明当考虑竖向地震作用时,LRB隔震结构仍具有良好的隔震效果,但地震反应有不同程度的增加,且其增量随着竖向地震作用的增加而增加.建立LRB隔震装置的参数优化设计模型,采用IHGA程序对结构的进行优化设计.结果表明,LRB隔震结构在各种工况下的各项地震反应均得到更好地控制.
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| 关 键 词： | 结构振动控制 LRB隔震结构 耦合地震作用 结构优化 遗传算法 |
Optimization of base-isolated structure with LRB under vertical earthquake |
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| ZHANG Yan-nian,GUO Peng-fei,DONG Jin-kun,ZHU Chao-yan. Optimization of base-isolated structure with LRB under vertical earthquake[J]. Journal of Harbin Institute of Technology, 2009, 0(12): 190-193 |
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| Authors: | ZHANG Yan-nian GUO Peng-fei DONG Jin-kun ZHU Chao-yan |
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| Affiliation: | 1.School of Civil Engineering,Shenyang Jianzhu University,Shenyang 110015,China;2.School of Civil Engineering,Liaoning University of Technology,Jinzhou 121001 China) |
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| Abstract: | In order to study the influence of coupling earthquake in vertical direction on base-isolated structure with lead rubber bearing(LRB),a dynamic analysis model for the base-isolated structure with LRB under coupling earthquake was set up,and the kinetic differential function was presented accordingly.Taking a 7-story base-isolated structure with LRB for example,it is showed that the base-isolated structure with LRB has a good controlled effect when the action of earthquake in vertical direction is considered.However,the seismic responses of base-isolated structure with LRB increase in different degrees under the incremental action of earthquake in vertical direction.An optimal model for the base-isolated structure with LRB was set up with IHGA.It is indicated that various earthquake responses of base-isolated structure with LRB under various loading conditions can be better controlled. |
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| Keywords: | vibration control base-isolated structure with LRB coupling effect of earthquake structural optimization genetic algorithm |
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