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| 等価静的解析× | 応答スペクトル解析× | |
|---|---|---|
| 分野 | 土木工学 | 土木工学 |
| 系統 | Process / pipeline | Process / pipeline |
| 提唱年≠ | 1959 | 1941 |
| 提唱者≠ | SEAOC (Structural Engineers Association of California) | George W. Housner |
| 種類≠ | Simplified linear method for earthquake-equivalent lateral forces | Linear modal analysis for earthquake response |
| 原典≠ | SEAOC (1959). Lateral Forces by Virtual Work. Proceedings of the Structural Engineers Association of California, 28(1), 1-16. link ↗ | Housner, G. W. (1941). Calculating the response of an oscillator to arbitrary ground motion. Bulletin of the Seismological Society of America, 32(2), 143-149. link ↗ |
| 別名 | Lateral force method, Simplified seismic design, Static equivalent method | Elastic response spectrum, Design spectrum method, Modal response spectrum |
| 関連≠ | 3 | 4 |
| 概要≠ | Equivalent static analysis is the simplest seismic design method, representing earthquake effects as a single static lateral force applied at the center of mass or distributed over the building height. Standardized by SEAOC in 1959 and incorporated into modern building codes, it is the most commonly used method for designing regular buildings. | Response spectrum analysis is a linear modal method for estimating earthquake-induced forces and displacements in structures. Introduced by Housner in 1941, this approach uses design spectra that represent the maximum response of single-degree-of-freedom oscillators at different natural frequencies to compute the structural response by combining modal contributions. |
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