手法を比較

	応答スペクトル解析	プッシュオーバー解析
分野	土木工学	土木工学
系統	Process / pipeline	Process / pipeline
提唱年	1941	1996
提唱者	George W. Housner	Peter Fajfar
種類	Linear modal analysis for earthquake response	Nonlinear static method for earthquake engineering
原典	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.	Ahi, N., Desroches, R., & Jain, A. (1996). Lateral load distribution for equivalent static analysis of buildings. Engineering Journal, 33(2), 45-54.
別名	Elastic response spectrum, Design spectrum method, Modal response spectrum	Static pushover, Nonlinear static analysis
関連	4	4
概要	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.	Pushover analysis is a nonlinear static method for assessing seismic structural performance. Introduced by Fajfar in 1996 as part of the N2 method, it progressively increases lateral loads on a structure until it reaches a target displacement, revealing how structures deform and yield under seismic events.