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首页> 外文期刊>Bulletin of earthquake engineering >Capacity, fragility and damage in reinforced concrete buildings: a probabilistic approach
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Capacity, fragility and damage in reinforced concrete buildings: a probabilistic approach

机译：钢筋混凝土建筑的容量，脆弱性和损坏：一种概率方法

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The main goals of this article are to analyze the use of simplified deterministic nonlinear static procedures for assessing the seismic response of buildings and to evaluate the influence that the uncertainties in the mechanical properties of the materials and in the features of the seismic actions have in the uncertainties of the structural response. A reinforced concrete building is used as a guiding case study. In the calculation of the expected spectral displacement, deterministic nonlinear static methods are simple and straightforward. For not severe earthquakes these approaches lead to somewhat conservative but adequate results when compared to more sophisticated procedures involving nonlinear dynamic analyses. Concerning the probabilistic assessment, the strength properties of the materials, concrete and steel, and the seismic action are considered as random variables. TheMonteCarlo method is then used to analyze the structural response of the building. The obtained results show that significant uncertainties are expected; uncertainties in the structural response increase with the severity of the seismic actions. The major influence in the randomness of the structural response comes from the randomness of the seismic action. A useful example for selected earthquake scenarios is used to illustrate the applicability of the probabilistic approach for assessing expected damage and risk. An important conclusion of this work is the need of broaching the fragility of the buildings and expected damage assessment issues from a probabilistic perspective.
机译：本文的主要目标是分析使用简化的确定性非线性静态程序评估建筑物的地震响应，并评估材料的机械性能和地震作用特征的不确定性对结构的影响。结构响应的不确定性。钢筋混凝土建筑被用作指导案例研究。在计算预期的光谱位移时，确定性的非线性静态方法简单明了。与较复杂的涉及非线性动力分析的程序相比，对于不严重的地震，这些方法会产生一些保守但足够的结果。关于概率评估，材料，混凝土和钢的强度特性以及地震作用被认为是随机变量。然后使用MonteCarlo方法分析建筑物的结构响应。获得的结果表明，预计会有很大的不确定性。结构响应的不确定性随着地震作用的严重性而增加。结构响应随机性的主要影响来自地震作用的随机性。使用选定地震场景的一个有用示例来说明概率方法用于评估预期破坏和风险的适用性。这项工作的重要结论是，需要从概率的角度探讨建筑物的脆弱性和预期的损害评估问题。

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