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首页> 外文会议>World conference on earthquake engineering;WCEE >SENSITIVITY OF ANALYTICAL VULNERABILITY FUNCTIONS TOINPUT AND RESPONSE PARAMETER RANDOMNESS
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SENSITIVITY OF ANALYTICAL VULNERABILITY FUNCTIONS TOINPUT AND RESPONSE PARAMETER RANDOMNESS

机译：输入和响应参数随机性的分析易损性函数的敏感性

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摘要

There are many approaches to derive vulnerability functions that are used to estimate the seismic riskof populations of structural systems. Previous research on the derivation of vulnerability curves employsvarious assumptions, aimed mainly at reducing the computational effort. Few studies use detailed fibermodeling approaches and accurate stiffness and strength degrading models. The end result is aproliferation of vulnerability curves that differ by large factors and for which the level of uncertainty is notalways quantified. In this study, analyses are performed using the most detailed models available. Thesewere verified by comparing the analytical model to the shaking table test results. The influence of theground motions and material properties are investigated by isolating the effect of each variable throughsensitivity analysis and detailed simulation. A statistical method to handle structural response in thevicinity of the collapse limit state is presented alongside criteria for selection of response limit states,ground motion duration and scaling factors. It is observed that the effect of ground motion variation isoverwhelming, in comparison with the effect of representation of other random fields.
机译：有许多方法可以导出易损性函数，这些函数可用于估计结构系统总体的地震风险。以前关于脆弱性曲线推导的研究采用了各种假设，主要是为了减少计算量。很少有研究使用详细的纤维建模方法以及精确的刚度和强度退化模型。最终结果是脆弱性曲线的扩散，这些脆弱性曲线的差异很大，并且不确定性水平始终无法量化。在这项研究中，使用最详细的模型进行分析。通过将分析模型与振动台测试结果进行比较，对这些结果进行了验证。通过敏感性分析和详细的模拟隔离每个变量的影响，研究了地面运动和材料特性的影响。提出了一种统计方法来处理塌陷极限状态附近的结构响应，以及选择响应极限状态，地震动持续时间和比例因子的标准。可以看出，与其他随机场表示的影响相比，地震动变化的影响是巨大的。

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  • 会议地点 Vancouver(CA);Vancouver(CA)
  • 作者

    Oh-Sung KWON; Amr ELNASHAI;

  • 作者单位

    University of Illinois at Urbana Champaign Urbana IL USA. Email:okwon2@uiuc.edu;

    Mid-America Earthquake Center University of Illinois at Urbana Champaign Urbana IL USA. Email: aelnash@uiuc.edu;

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