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Consideration of economic vulnerability in seismic performance evaluation of structures

机译：思考建筑地震绩效评价中的经济脆弱性

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摘要

Risk (economic, social and environmental) assessment and mitigation have recently gained great attention. It refers to computing the risk of a community's infrastructure associated with natural hazards such as earthquakes, landslides, hurricanes or others. Performance evaluation of structures has until now been based on evaluation of maximum displacements, interstory drifts, deformation patterns, ductility and other similar parameters; a relative economic loss estimation as a performance measure for the structure is the next step that follows, and is what has been investigated in this work. For this study a steel mid-rise structure was designed according to code provisions (ASCE 7-10, NSR-10, AISC-341) using modal spectral analysis, after which it was subjected to an Incremental Dynamic Analysis procedure to evaluate the capacity curve of the building. The capacity analysis was then used to determine damage states and compute fragility curves. Finally, economic relative loss values were assigned to represent each designated damage state, for which the mean damage ratio was computed (in terms of economic loss relative to total replacement cost) as a function of spectral displacement. Assigning a relative loss index to damage states is the critical stage of the analysis.
机译：风险（经济，社会和环境）评估和减缓最近遭受了很大的关注。它指的是计算与地震，山体滑坡，飓风或其他人的自然灾害相关的社区基础设施的风险。结构的性能评估直到现在一直基于评估最大位移，壁垒漂移，变形模式，延展性和其他类似参数;作为结构的性能措施的相对经济损失估计是下一步，并且是在这项工作中调查的。对于本研究，使用模谱分析，根据代码规定（ASCE 7-10，NSR-10，AISC-341）设计了钢中层结构，之后将其进行增量动态分析程序来评估容量曲线建筑物。然后使用容量分析来确定损伤状态和计算脆弱曲线。最后，分配经济相对损失值来代表每个指定的损伤状态，根据光谱位移的函数计算平均损伤比率（相对于总替换成本的经济损失）。为损害率分配相对损失指数是分析的关键阶段。

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