巨-子型有控结构体系的可靠度分析及其优化
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摘要
采用首次超越破坏机制,定义结构层间位移为极限状态控制指标,确定了基于概率密度演化方法的巨-子型有控结构体系的抗震动力可靠度的计算方法;基于可靠度并结合"等可靠度准则"对其进行优化。编制SAP2000与MATLAB接口程序将SAP2000中的分析结果带入到MATLAB中进行概率密度演化分析。结果表明:巨-子型有控结构在弹塑性阶段依然有很好的响应控制效果;巨–子型有控结构比巨型框架结构具有更高的抗震可靠度;经过优化后MSCSS的响应控制能力及可靠度都得到了显著提高。
The first-passage failure mechanism is adopted and the damage limits state of structure is defined using storey drift;the computational method of seismic resistance reliability of Mega-Sub Controlled Structural System(MSCSS) with the probability density evolution principle is represented.An approach of the reliability-based optimization for MSCSS is presented based on "Equi-reliability" criteria.The analysis results are disposed in the MATLAB software using the SAP2000 Application Programming Interface(API);the probability density evolution analysis for stochastic seismic response of MSCSS is proceeded.The results indicate that within the elasto-plastic state,MSCSS still have good response control results;compared to the Mega-Frame Structure(MF),MSCSS present better seismic reliability;after optimization process,the control effectiveness and the reliability of MSCSS have greatly improved.
The first-passage failure mechanism is adopted and the damage limits state of structure is defined using storey drift;the computational method of seismic resistance reliability of Mega-Sub Controlled Structural System(MSCSS) with the probability density evolution principle is represented.An approach of the reliability-based optimization for MSCSS is presented based on "Equi-reliability" criteria.The analysis results are disposed in the MATLAB software using the SAP2000 Application Programming Interface(API);the probability density evolution analysis for stochastic seismic response of MSCSS is proceeded.The results indicate that within the elasto-plastic state,MSCSS still have good response control results;compared to the Mega-Frame Structure(MF),MSCSS present better seismic reliability;after optimization process,the control effectiveness and the reliability of MSCSS have greatly improved.
引文
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[3]刘锐.巨-子型有控结构在地震作用下的动力可靠度研究[D].西安:西北工业大学,2010Liu Rui.Dynamic Reliability Analysis of MSCS UnderSeismic Loads[D].Xi’an:School of Mechanics andCivil&Architecture,Northwestern PolytechnicalUniversity,2010
[4]张洵安,周湘鄂,何官剑.巨-子型有控结构体系在地震激励下的响应控制特性[J].沈阳工业大学学报,2008,30(2):119～222Zhang Xun-an,Zhou Xiang-e,He Guan-jian.ResponseControlling Characteristics of Mega-sub ControlledStructure System under Seismic Excitation[J].Journalof Shenyang University of Technology,2008,30(2):119～222(in Chinese)
[5]陈建兵,李杰.非线性随机机构动力可靠度的密度演化方法[J].力学学报,2004,36(2):196～201Chen Jian-bing,Li Jie.The Probability Density EvolutionMethod for Dynamic Reliability Assessment of NonlinearStochastic Structures[J].Acta Mechanica Sinica,2004,36(2):196～201(in Chinese)
[6]李杰,陈建兵.随机结构非线性动力响应的概率密度演化分析[J].力学学报,2003,35(6):716～722Li Jie,Chen Jian-bing.The Probability Density EvolutionMethod for Analysis of Dynamic Nonlinear Response ofStochastic Structures[J].Acta Mechanica Sinica,2003,35(6):716～722(in Chinese)
[7]Li Jie,Chen Jian-bing.Stochastic Dynamics of Structures[M].[S.l]:John Wiley&Sons,2009
[8]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)
[9]孙广俊.结构随机地震反应时域分析及抗震可靠度优化[D].南京:南京工业大学,2006Sun Guang-jun.Random Seismic Response Analysis ofStructures in Time Domain and Reliability–BasedOptimization for Earthquake-resistant Structures[D].Nanjing:Nanjing University of Technology,2006(inChinese)
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