| 隔震结构基于动力可靠性约束的优化设计 |
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| 引用本文： | 李创第,黄天立,葛新广.隔震结构基于动力可靠性约束的优化设计[J].哈尔滨工业大学学报,2009(8):169-171. |
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| 作者姓名： | 李创第 黄天立 葛新广 |
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| 作者单位： | 广西工学院土木工程系 |
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| 基金项目： | 广西高校百名中青年学科带头人资助项目工程(RC20060814017);广西自然科学基金项目(0481001);广西科学基金项目(0508052) |
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| 摘 要： | 为系统研究多自由度基础隔震结构基于动力可靠性约束的优化设计方法.用复模态法获得了结构基于Kanai-Tajimi谱随机地震响应的解析解;以基础隔震结构和基础固定结构的上部结构一阶模态位移标准差之比作为优化目标,以隔震装置位移响应不超过其容许设计限值的动力可靠性为约束条件,运用罚函数法获得隔震装置的优化设计参数,并给出算例,从而建立了基础隔震结构基于动力可靠性约束的优化设计的一整套方法.
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| 关 键 词： | 基础隔震 随机响应 优化设计 |
Optimal design of base-isolated structure based on the constraint of dynamic reliability |
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| LI Chuang-di,HUANG Tian-li,GE Xin-guang.Optimal design of base-isolated structure based on the constraint of dynamic reliability[J].Journal of Harbin Institute of Technology,2009(8):169-171. |
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| Authors: | LI Chuang-di HUANG Tian-li GE Xin-guang |
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| Affiliation: | (Civil Engineering Department,Guangxi Institute of Technology,Liuzhou 545006,China) |
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| Abstract: | Optimal design methods for MDOF base-isolated structure based on the constraint of dynamic reliability were studied systematically. The exact solutions for random earthquake response of the structure were got by using complex mode method. The ratio of standard deviation of the first-order modal displacement of the upper structure for the isolated structure to the fixed-base structure was used as the optimal objective. The dynamic reliability of the isolated equipment was used as constraint condition,and the optimal design parameters of isolated equipment were obtained by the penalty function method. An example was given,therefore,a complete set of methods for optimal design of base-isolated structure based on the constraint of dynamic reliability were established. |
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| Keywords: | base isolation random response optimal design |
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