Since earthquake prediction still remains impossible, foreseeing damages experienced by a structure submitted to a seismic event has become a key point in earthquake engineering. This work aims at evaluating the relevance of classical seismic signal damaging potential indices and at proposing improvement of these indices in order to provide better prediction of structural damage due to earthquakes. It first supplies a non exhaustive state of the art of main Damaging Potential Indices IP and Damage Indices ID used in earthquake engineering. IP/ID correlations results are analysed in order to evaluate IP relevance, to justify displacement based approach use (capacity spectrum method) for damage prediction and to make good the proposal for improvement of Damaging Potential Indices. It appears first that the most relevant "elementary" IP in the studied cases are Destructive Power and Spectral Intensity and secondly that this relevance can be improved by combining cumulative and "threshold" IP into "complex" IP: to combine cumulative IP such as Cumulative Absolute Velocity (CAV) or Arias Intensity with "threshold" IP such as Peak Ground Acceleration (PGA) leads to divide damage scatter by at least 2 and then increases the determination factor by more than 15%. Moreover, displacement based approach using non linear static analysis and Capacity-Spectrum Method (CSM), does not generate much more uncertainties on damage than classical non linear time history analysis. This result justifies CSM use all the more because simplicity of this method encourages parametric studies.
展开▼
机译：由于地震预测仍然是不可能的，通过预见提交给地震事件的结构经历了损害已成为地震工程的一个关键点。这项工作的目的是评估古典地震信号的潜在破坏指数的相关性，并在以因地震提供的结构性损坏更好的预测提出这些指标的改善。它首先用品领域主要毁伤潜力指数IP的非详尽的状态和损伤指标ID在地震工程中使用。 IP / ID相关结果，以评估IP相关性，来证明基于位移的方法使用（能力谱法），用于损坏预测和使良好的建议改进毁伤潜在指数的分析。它首先出现的是最相关的“基本” IP在所研究的情况下，是破坏力光谱强度，其次，这种相关性可以通过累积的“门槛” IP组合成“复杂”的IP进行改进：累积IP相结合，如累积绝对速度（CAV）或阿里亚斯强度用“阈值” IP诸如峰值加速度（PGA）导致除法损坏散射由至少2，然后通过在15％以上增加所述确定因子。此外，位移使用非线性静态分析和能力谱法（CSM），不产生上比传统的非线性时程分析损伤更不确定性为基础的方法。这一结果证明CSM使用更加因为这种方法简单鼓励参数研究。
展开▼
