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| 増分動解析× | 確率論的地震ハザード解析（PSHA）× | |
|---|---|---|
| 分野 | 土木工学 | 土木工学 |
| 系統 | Process / pipeline | Process / pipeline |
| 提唱年≠ | 2002 | 1968 |
| 提唱者≠ | Dimitrios Vamvatsikos and C. Allin Cornell | C. Allin Cornell |
| 種類≠ | Intensity-based dynamic analysis for fragility assessment | Quantitative probabilistic framework |
| 原典≠ | Vamvatsikos, D., & Cornell, C. A. (2002). Incremental dynamic analysis of seismic performance of structures. Earthquake Engineering & Structural Dynamics, 31(3), 491-514. DOI ↗ | Cornell, C. A. (1968). Engineering seismic risk analysis. Bulletin of the Seismological Society of America, 58(5), 1583–1606. link ↗ |
| 別名≠ | IDA, Intensity-based analysis, Fragility curve development | PSHA, seismic hazard analysis, probabilistic earthquake hazard assessment, Cornell-McGuire method |
| 関連≠ | 3 | 1 |
| 概要≠ | Incremental dynamic analysis (IDA) is a method that runs time-history analyses on a structure with a single ground motion record, progressively increasing the intensity until the structure reaches a specified performance level or collapses. Introduced by Vamvatsikos and Cornell in 2002, this approach efficiently generates fragility curves relating earthquake intensity to structural damage and collapse probability. | Probabilistic Seismic Hazard Analysis (PSHA) is a quantitative engineering framework used in civil and geotechnical engineering to estimate the likelihood that ground shaking will exceed a specified intensity level at a site within a given time window. By combining earthquake source geometry, recurrence statistics, and ground-motion attenuation models, PSHA produces hazard curves and maps that inform seismic design codes, infrastructure planning, and risk management decisions. |
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