设置软钢阻尼器的钢框架消能减震性能研究
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摘要
通过在钢结构模型楼层设置软钢阻尼器,采用质点系模型和自编时程分析法程序,讨论了阻尼器设置参数与楼层动力响应值减震效果之间的关系,分别研究了楼层和阻尼器的塑性能与阻尼器有效刚度之间的关系.结果表明:层间最大位移角的减震效果最好,且有控楼层要好于无控楼层;最大速度和最大加速度的减震效果与阻尼器设置参数、输入地震动有关;随着阻尼器有效刚度的增大,有控楼层的楼层最大剪力降低,楼层的塑性能减少,阻尼器的塑性能增多且幅度下降.
Based on the mass-system model and time-history analysis program,the relation between setting parameters of dampers and mitigation effect of storey dynamical response was discussed by setting mild steel dampers in floors.Furthermore,plastic energy of floors and dampers with dampers effective stiffness were studied separately.The results indicate that the mitigation effect of maximal inter-laminar displacement angle is best,and controlled floor is more obvious than uncontrolled one.The mitigation effect of maximal velocity and acceleration is connected with setting parameters of dampers and input seismic waves.When increasing the effective stiffness of dampers augment,the maximal interbedded shearing force of controlled floor decreases,and plastic energy of floors decreases.Furthermore,plastic energy of dampers increases,while the amplitude falls.
Based on the mass-system model and time-history analysis program,the relation between setting parameters of dampers and mitigation effect of storey dynamical response was discussed by setting mild steel dampers in floors.Furthermore,plastic energy of floors and dampers with dampers effective stiffness were studied separately.The results indicate that the mitigation effect of maximal inter-laminar displacement angle is best,and controlled floor is more obvious than uncontrolled one.The mitigation effect of maximal velocity and acceleration is connected with setting parameters of dampers and input seismic waves.When increasing the effective stiffness of dampers augment,the maximal interbedded shearing force of controlled floor decreases,and plastic energy of floors decreases.Furthermore,plastic energy of dampers increases,while the amplitude falls.
引文
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[3]邢书涛.新型软钢阻尼器及其在结构控制中的应用研究[D].哈尔滨:中国地震局工程力学研究所,2003.
[4]章丛俊,李爱群,赵明.软钢阻尼器耗能减震结构的研究与应用综述[J].工业建筑,2006,36(9):17-21.Zhang Congjun,Li Aiqun,Zhao Ming.Summary of re-search on and applications of passive energy dissipationsystems of mild steel damper[J].Industrial Construction,2006,36(9):17-21.(in Chinese)
[5]裴星洙,刘正伟.双翼鱼刺型振动模型基础研究[J].江苏科技大学学报:自然科学版,2007,21(6):4-6.Pei Xingzhu,Liu Zhengwei.Elementary rearch on dualwings fishbone-shaped vibration model[J].Journal ofJiangsu University ofScience and Technology:Natural Sci-ence Edition,2007,21(6):4-6.(in Chinese)
[6]裴星洙,黎雪环.考虑地基与建筑结构相互作用的动态分析[J].江苏科技大学学报:自然科学版,2008,22(1):22-25.Pei Xingzhu,Li Xuehuan.Dynamic analysis of buildingsconsidering interaction between foundation and super-structure[J].Journal ofJiangsu UniversityofScience andTechnology:Natural Science Edition,2008,22(1):22-25.(in Chinese)
[7]日本建筑构造技术者协会.应答制御构造设计法[M].东京:彰国社,2000.
[8]裴星洙,赵光伟.减震结构中耗能支撑参数与分布的多目标优化[J].江苏科技大学学报:自然科学版,2008,22(2):21-24.Pei Xingzhu,Zhao Guangwei.Multi-objective optimizationof damping structure to dissiopative sustain parametersand distribution[J].Journal ofJiangsu University ofSci-ence and Technology:Natural Science Edition,2008,22(2):21-24.(in Chinese)
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