巨-子型有控结构体系的抗震动力可靠度结构优化研究
|
摘要
利用地震作用下巨-子型有控结构的动力响应特性,基于复模态理论,推导了在随机地震激励下的均方响应表达式;采用变形准则定义了巨-子型有控结构的极限状态,根据首次超越机制,并基于串联可靠度模型建立了在给定地震动下的条件动力可靠度计算方法。通过一个巨-子型有控结构计算实例,证明此方法计算简单,易于工程应用。结果表明:附加柱是结构的薄弱层,通过结构参数优化和对附加柱进行改进后,结构失效概率显著减小。
According to the dynamic characteristics,the mean square responses of Mega-Sub Controlled Structural System(MSCSS) under excitation of random seismic ground motion are obtained based on the complex modal analytical theory.Refer to the deformation failure criterion,the limit states of MSCSS are defined.The reliability model of the system is considered as series connection model,the dynamic conditional reliability of MSCSS are evaluated at given ground acceleration on the basis of the first passage mechanism.Then,a MSCSS model is given as numerical example to prove that this method is simple and easy to use.The result shows that additional columns are the weak parts of MSCSS,the structure failure probability is reduced obviously by optimizing the parameters and improving additional columns.
According to the dynamic characteristics,the mean square responses of Mega-Sub Controlled Structural System(MSCSS) under excitation of random seismic ground motion are obtained based on the complex modal analytical theory.Refer to the deformation failure criterion,the limit states of MSCSS are defined.The reliability model of the system is considered as series connection model,the dynamic conditional reliability of MSCSS are evaluated at given ground acceleration on the basis of the first passage mechanism.Then,a MSCSS model is given as numerical example to prove that this method is simple and easy to use.The result shows that additional columns are the weak parts of MSCSS,the structure failure probability is reduced obviously by optimizing the parameters and improving additional columns.
引文
[1]Feng M Q,Mita A.Vibration control of tall buildingsusing mega-sub configuration[J].ASCE.Journal ofEngineering Mechanics,1995,121(10):1082～1087
[2]Zhang Xun-an,Wang Dong and Jiang Jie-sheng.Thecontrolling mechanism and the controlling effectivenessof passive mega-sub-controlled frame subjected torandom wind loads[J].Journal of Sound and Vibration,2004,1～18
[3]李桂青,曹宏,李秋胜,等.结构动力可靠性理论及其应用[M].北京:地震出版社,1993,228～247Li Gui-qing,Cao Hong,Li Qiu-sheng,et al.StructuralDynamic Reliability Theory and Its Application[M].Beijing:Seismology Press,1993,228～247(inChinese)
[4]刘大海,杨翠如.高层建筑结构方案优选[M].北京:中国建筑工业出版社,1996Liu Da-hai,Yang Cui-ru.Optimal Selection of High-rise Building[M].Beijing:China Architecture&Building Press,1996(in Chinese)
[5]方同.工程随机振动[M].北京:国防工业出版社,1995,64～73Fang Tong.Engineering Random Vibration[M].Beijing:National Defence Industry Press,1995,64～73(in Chinese)
[6]李鸿晶,冯启民,王中生.平面框架结构抗震易损性的简化分析方法[J].地震工程与工程振动,1997,17(4):18～25Li Hong-jing,Feng Qi-min,Wang Zhong-sheng.ASimplifide Approach To Vulnerblity Analysis forEarthquake-Resistant Plane Frame Structures[J].Earthquake Engineering and Engineering Vibration,1992,77(4):18～25
[7]赵国藩,金伟良,贡金鑫.结构可靠度理论[M].北京:中国建筑工业出版社,2000Zhao Guo-fan,Jin Wei-liang,Gong Jin-xin.StructureReliability Theory[M].Beijing:China Architecture&Building Press,2000(in Chinese)
[8]白国梁,朱丽华.基于现行抗震规范的Kanai-Tajimi模型参数研究[J].世界地震工程,2004,(3):114～118Bai Guo-liang,Zhu Li-hua.Study on the parameters ofKanai-Tajimi model based on the code(GB50011-2001)[J].World Earthquake Engineering,2004,(3):114～118(in Chinese)
[2]Zhang Xun-an,Wang Dong and Jiang Jie-sheng.Thecontrolling mechanism and the controlling effectivenessof passive mega-sub-controlled frame subjected torandom wind loads[J].Journal of Sound and Vibration,2004,1～18
[3]李桂青,曹宏,李秋胜,等.结构动力可靠性理论及其应用[M].北京:地震出版社,1993,228～247Li Gui-qing,Cao Hong,Li Qiu-sheng,et al.StructuralDynamic Reliability Theory and Its Application[M].Beijing:Seismology Press,1993,228～247(inChinese)
[4]刘大海,杨翠如.高层建筑结构方案优选[M].北京:中国建筑工业出版社,1996Liu Da-hai,Yang Cui-ru.Optimal Selection of High-rise Building[M].Beijing:China Architecture&Building Press,1996(in Chinese)
[5]方同.工程随机振动[M].北京:国防工业出版社,1995,64～73Fang Tong.Engineering Random Vibration[M].Beijing:National Defence Industry Press,1995,64～73(in Chinese)
[6]李鸿晶,冯启民,王中生.平面框架结构抗震易损性的简化分析方法[J].地震工程与工程振动,1997,17(4):18～25Li Hong-jing,Feng Qi-min,Wang Zhong-sheng.ASimplifide Approach To Vulnerblity Analysis forEarthquake-Resistant Plane Frame Structures[J].Earthquake Engineering and Engineering Vibration,1992,77(4):18～25
[7]赵国藩,金伟良,贡金鑫.结构可靠度理论[M].北京:中国建筑工业出版社,2000Zhao Guo-fan,Jin Wei-liang,Gong Jin-xin.StructureReliability Theory[M].Beijing:China Architecture&Building Press,2000(in Chinese)
[8]白国梁,朱丽华.基于现行抗震规范的Kanai-Tajimi模型参数研究[J].世界地震工程,2004,(3):114～118Bai Guo-liang,Zhu Li-hua.Study on the parameters ofKanai-Tajimi model based on the code(GB50011-2001)[J].World Earthquake Engineering,2004,(3):114～118(in Chinese)
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