孙鸿宾, 吴子燕, 刘骁骁. 基于多维性能极限状态的结构易损性分析[J]. 工程力学, 2013, 30(5): 147-152. DOI: 10.6052/j.issn.1000-4750.2011.12.0897
引用本文: 孙鸿宾, 吴子燕, 刘骁骁. 基于多维性能极限状态的结构易损性分析[J]. 工程力学, 2013, 30(5): 147-152. DOI: 10.6052/j.issn.1000-4750.2011.12.0897
SUN Hong-bin, WU Zi-yan, LIU Xiao-xiao. MULTIDIMENSIONAL PERFORMANCE LIMIT STATES FOR STRUCTURAL FRAGILITY ESTIMATION[J]. Engineering Mechanics, 2013, 30(5): 147-152. DOI: 10.6052/j.issn.1000-4750.2011.12.0897
Citation: SUN Hong-bin, WU Zi-yan, LIU Xiao-xiao. MULTIDIMENSIONAL PERFORMANCE LIMIT STATES FOR STRUCTURAL FRAGILITY ESTIMATION[J]. Engineering Mechanics, 2013, 30(5): 147-152. DOI: 10.6052/j.issn.1000-4750.2011.12.0897

基于多维性能极限状态的结构易损性分析

MULTIDIMENSIONAL PERFORMANCE LIMIT STATES FOR STRUCTURAL FRAGILITY ESTIMATION

  • 摘要: 由于基于性能的单指标易损性方法在结构易损性分析中忽略了非承重构件及设备仪器破坏的影响,该文提出了基于多维性能极限状态的易损性分析方法,采用承重构件敏感的最大层间位移参数与非承重构件及设备仪器敏感的最大加速度参数作为性能量化指标,建立了基于多维性能极限状态的广义方程描述结构整体的极限破坏状态。根据超越概率的定义,并考虑量化指标间相关性及其阀值的随机性,推导得到了二维性能极限状态下超越概率的解析解;并利用matlab拟合得到了结构在正常使用、可以使用、生命安全、防止倒塌四个性能水平下的易损性曲线。

     

    Abstract: A new method for multidimensional performance limit states was developed to analyze the structural fragility. Concerning the randomness and dependency of the limit states, a generalized formulation was proposed with the inter-story drift and acceleration as the quantitative indexes based on the probabilistic description of the limit states. The analytical solutions of the probability of exceedance are given under four performance levels: Normal Operation, Immediate Occupancy, Life Safety, and Collapse Prevention. And the fragility curves used to evaluate the buildings’ performance synthetically are generated through Matlab.

     

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