| 周星德,彭宣茂.基于遗传算法的建筑结构最优阻尼研究[J].计算力学学报,2005,22(6):780~784 |
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| 基于遗传算法的建筑结构最优阻尼研究 |
| Study on optimal damper of building structures using real coded genetic algorithms |
| 修订日期：2003-12-16 |
| DOI：10.7511/jslx20056151 |
| 中文关键词: 临界激励法 模态变换 总的阻尼增量 实代码遗传算法 |
| 英文关键词:critical excitation approach,modes transfer,total-damper-increment,real coded genetic algorithms |
| 基金项目:江苏省自然科学基金(BK2003083)，江苏省第二批“六大人才高峰”资助项目 |
| 周星德 彭宣茂 |
| 河海大学工程力学系,南京210098 |
| 摘要点击次数: 1243 |
| 全文下载次数: 10 |
| 中文摘要: |
| 为了确定建筑结构的最优阻尼，本文采用了具有鲁棒性的临界激励法。使用临界激励法时，频率作用区问较难确定，为此，本文通过模态变换以减少高阶频率的影响，这样可以简化频率作用区间的搜寻。在保证结构抗震效果的前提下，为进一步减少结构总的阻尼增量并使优化算法简单可行，本文引入实代码遗传算法。此外，通过实例分析可知，底部楼层阻尼取较大的值是有利的。 |
| 英文摘要: |
| In order to get the optimal damper of building structures, in the paper,a robust critical excitation approach is adopted.Considering it is difficult to acquire the frequencies action areas,modes transfer is used to lessen the high-order frequencies influence and reduce the search of frequencies action areas.On the premise that the structural anti-vibration effect could be assured,the real coded genetic algorithms is utilized to find the optimal damper in order to acquire a lesser total-damper-increment and feasible and simple optimization method.Meanwhile,by a numerical example,we find that it is favorable to put the bigger damper into the middle floor position. |
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