Probabilistic fragility analysis parameterized by fundamental response quantities
Probabilistic fragility analysis parameterized by fundamental response quantities
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DOI：
10.1016/j.engstruct.2006.06.026
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发表时间：
2007-06
影响因子：
5.5
通讯作者：
Seong-Hoon Jeong;A. Elnashai
中科院分区：
文献类型：
--
作者：
Seong-Hoon Jeong;A. Elnashai
分析概率脆弱性的研究需要大量的计算机模拟，以说明在输入运动和响应特性的随机性。在这项研究中，一组已知的可靠度的脆弱性关系的基础上的基本响应量的刚度，强度和延性的方法。一个广义的单自由度系统的精确解的开发和用于构建一个响应数据库的系数描述常用的对数正态脆弱性关系。一旦广泛的结构系统的基本响应量的定义，各种极限状态的脆弱性关系，可以构建不求助于进一步的模拟。与建模简化的不确定性进行量化所提出的方法和详细的多自由度（MDOF）系统之间的比较。应用实例表明了该方法的有效性。
Analytical probabilistic fragility studies require extensive computer simulations to account for the randomness in both input motion and response characteristics. In this study, an approach whereby a set of fragility relationships with known reliability is derived based on the fundamental response quantities of stiffness, strength and ductility is presented. An exact solution for a generalized single degree of freedom system is developed and employed to construct a Response Database of coefficients describing commonly used log-normal fragility relationships. Once the fundamental response quantities of a wide range of structural systems are defined, the fragility relationships for various limit states can be constructed without recourse to further simulation. The uncertainty associated with modeling simplifications is quantified by conducting comparisons between the proposed approach and detailed multi-degree of freedom (MDOF) systems. Application examples are given to demonstrate the efficiency of the proposed approach.