手法を比較
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| 斜面の安定性（ビショップ・ヤンブ法）× | 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≠ | 1955 | 1968 |
| 提唱者≠ | Alan Bishop and Nilmar Janbu | C. Allin Cornell |
| 種類≠ | Limit equilibrium method for slope failure analysis | Quantitative probabilistic framework |
| 原典≠ | Bishop, A. W. (1955). The use of the slip circle in the stability analysis of slopes. Geotechnique, 5(1), 7-17. DOI ↗ | Cornell, C. A. (1968). Engineering seismic risk analysis. Bulletin of the Seismological Society of America, 58(5), 1583–1606. link ↗ |
| 別名≠ | Circular slip surface, Limit equilibrium, Factor of safety | PSHA, seismic hazard analysis, probabilistic earthquake hazard assessment, Cornell-McGuire method |
| 関連≠ | 3 | 1 |
| 概要≠ | The Bishop and Janbu methods are limit equilibrium approaches for analyzing slope stability, computing the factor of safety against shear failure along a potential slip surface. Developed by Bishop (1955) and Janbu (1954), these methods remain the most widely used tools in geotechnical engineering for evaluating cut slopes, embankments, and natural hillsides. | 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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