基础隔震结构简化模型的振动参数识别
|
摘要
针对目前隔震工程设计中模型简化方面存在的不足，以隔震体系上部结构层间剪力和隔震层位移这两个主要指标等效为目标函数，用多目标优化算法建立了等代体系刚度及质量的参数识别数字模型，并针对工程设计需要，导出了等代参数的简化计算表达式。工程实例计算表明，用本文简化模型分析得到的上述两个指标结果与原结构的响应时程曲线基本吻合，时域响应峰值的相对误差小于３％。
Taking the insufficiency in model simplification of base isolation design into account, a mathematical model for indentification of parameters, the equivalent stiffness and mass, is established using multi-objective optimization algorithm. In the model, two main indices, the equivalent interstory shear forces in the superstructures and the equivalent displacement of the isolator, are taken as the objective functions. A simplified formula is derived for the equivalent parameters. It is shown by the numerical example that using the simplified method presented in this paper, the time history curves of the the dynamic responses associated with two main indices are approximately identical with that of prototype structure, and the relative errors of the peak values of the time domain response are less than 3%.
Taking the insufficiency in model simplification of base isolation design into account, a mathematical model for indentification of parameters, the equivalent stiffness and mass, is established using multi-objective optimization algorithm. In the model, two main indices, the equivalent interstory shear forces in the superstructures and the equivalent displacement of the isolator, are taken as the objective functions. A simplified formula is derived for the equivalent parameters. It is shown by the numerical example that using the simplified method presented in this paper, the time history curves of the the dynamic responses associated with two main indices are approximately identical with that of prototype structure, and the relative errors of the peak values of the time domain response are less than 3%.
引文
[1]欧进萍,关新春.土木工程的智能结构体系研究与进展[J].地震工程与工程振动,1999,19(2):21-28.
[2]苏经宇,曾德民.我国建筑结构隔震技术的研究和应用[A].国际结构控制与健康诊断研讨会论文集(光盘版)[C].No.504,深圳:2000.
[3]姚昭智.壮佳璋,郭耕杖.医院建筑中功能性设施的破坏分析[A].国际结构控制与健康诊断研讨会论文集(光盘版)[C]. No:606,深圳:2000.
[4]杜永峰,狄生奎,尹维祥,等.隔震结构等代体系动力响应的小参数逼近解法[J].甘肃工业大学学报,2000,26(1):94-100.
[5]马晋喜,曹志英,刘武靖,等.太原迎泽苑9#楼高层结构隔震设计[A].第四届中日建筑技术交流会论文集[C].大连,1999.173-187.
[6]武田寿一.建筑物隔震、防振与控制[M].纪晓惠.等译.北京:中国建筑工业出版社,1997.
[7]黄宗明,赖明,白绍良.结构阻尼识别中的目标函数问题[J].地震工程与工程振动,1996,16(4):120-126.
[8]许铁生.杜永峰,胡秀宣.RC梁系结构双目标优化设计的研究[J].建筑结构,1993,23(10):46-50.
[9]杜永峰,秋生奎,宋彧等．箱形基础的空间分析及其结构优化设计［J］．建筑结构，2000，30（5）：24－28．
[2]苏经宇,曾德民.我国建筑结构隔震技术的研究和应用[A].国际结构控制与健康诊断研讨会论文集(光盘版)[C].No.504,深圳:2000.
[3]姚昭智.壮佳璋,郭耕杖.医院建筑中功能性设施的破坏分析[A].国际结构控制与健康诊断研讨会论文集(光盘版)[C]. No:606,深圳:2000.
[4]杜永峰,狄生奎,尹维祥,等.隔震结构等代体系动力响应的小参数逼近解法[J].甘肃工业大学学报,2000,26(1):94-100.
[5]马晋喜,曹志英,刘武靖,等.太原迎泽苑9#楼高层结构隔震设计[A].第四届中日建筑技术交流会论文集[C].大连,1999.173-187.
[6]武田寿一.建筑物隔震、防振与控制[M].纪晓惠.等译.北京:中国建筑工业出版社,1997.
[7]黄宗明,赖明,白绍良.结构阻尼识别中的目标函数问题[J].地震工程与工程振动,1996,16(4):120-126.
[8]许铁生.杜永峰,胡秀宣.RC梁系结构双目标优化设计的研究[J].建筑结构,1993,23(10):46-50.
[9]杜永峰,秋生奎,宋彧等．箱形基础的空间分析及其结构优化设计［J］．建筑结构，2000，30（5）：24－28．
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心