大跨空间结构中黏滞阻尼器的位置优化研究  

Optimal location of viscous dampers in large-span space structures

作　　者：朱礼敏[1] 钱基宏[1] 张维嶽[1] 

机构地区：[1]中国建筑科学研究院,北京100013

出　　处：《土木工程学报》2010年第10期22-29,共8页China Civil Engineering Journal

摘　　要：对大跨空间结构中黏滞阻尼器的位置优化进行研究。首先从模态应变能和附加阻尼比的概念入手,提出最大化所有替换单元的模态应变能百分比之和的优化思路,在此基础上建立简单实用的优化数学模型。然后采用遗传算法编制阻尼器位置优化程序VDLO(Viscous Dampers’Location Optimization),并采用算例验证程序的合理性。最后通过不同矢跨比的算例分析,总结出双层柱面网壳中阻尼器的优化布置规律,对实际工程具有重要参考价值。This paper studies the optimal location of viscous dampers in large-span space structures.According to the concepts of modal strain energy and additional damping ratio,an optimization method that maximizes the sum of the percentage of modal strain energy of total replaced members is proposed,and a simple mathematical optimization model is formulated.An optimization program named VDLO（Viscous Dampers＇ Location Optimization） is developed using Genetic Algorithm,and it is proved valid by the examples.Rules for location of optimal location of dampers in double-layer cylindrical latticed shells are summarized by the examples with different rise-span ratios.

关 键 词：大跨空间结构 黏滞阻尼器 位置优化 遗传算法 

分 类 号：TU393.3[建筑科学—结构工程]