摘要
通过有限元分析软件SAP2000对巨–子型有控结构进行建模,利用SAP2000中的动力时程分析法,分别选用实测的地震动记录和通过HHT方法合成的El-Centro人工波,对巨–子型有控结构及巨型框架结构进行弹塑性时程分析;利用SAP2000与MATLAB接口程序将SAP2000的分析结果在MATLAB软件中做进一步的计算分析,进行结构随机地震响应的概率密度演化分析,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结构抗震动力可靠度的计算方法。结果表明:巨-子型有控结构比巨型框架结构具有更好的振动控制性能,抗震动力可靠度远大于巨型框架结构的抗震动力可靠度,具有更高的结构安全性和可靠性。
The model of MSCSS is established by using finite element software SAP2000. Using the dynamic time-history analysis method of SAP2000, both MSCSS and MF are analyzed under the measured ground motion records and E1-Centro artificial seismic wave which is composed by HHT. The analysis results are disposed in the MATLAB software, the probability density evolution analysis for stochastic seismic response of MSCSS is proceeded, the first- passage failure mechanism is adopted and the damage limits state of structure is defined by using storey force-resistance, and the computational method of dynamic reliability for resisting seismic loading of MSCSS is represented. The results indicate that comparing with the MF, the effect of seismic control of MSCSS is better, and the dynamic reliability for resisting seismic loading of MSCSS is higher obviously; so it can be seen that the MSCSS has higher structural safety and reliability.
出处
《工程抗震与加固改造》
北大核心
2012年第3期26-30,共5页
Earthquake Resistant Engineering and Retrofitting
基金
国家自然科学基金(51078311)
关键词
巨-子型有控结构体系
人工波
动力时程分析
抗震动力可靠度
概率密度演化
mega-sub controlled structural system（MSCSS）
artificial seismic wave
dynamic time-history analysis
dynamic reliability for resisting seismic loading
probability density evolution
