カリフォルニア地域の建物を対象とした木造住宅の振動解析モデルの一事例 : 木造建物の地震時挙動に対する解析的研究

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The main objective of this study is to develop numerical models for deterministic nonlinear time-history analyses of woodframe buildings under various earthquake ground motion. The target buildings are prototypical buildings built in California, USA. The three-dimensional nonlinear seismic analysis model considered is "the pancake model" that simulates the three-dimensional seismic response of a woodframe construction through a degenerated two-dimensional planar analysis. The required input parameters for wood shear walls and finishing walls, such as stucco walls and gypsum walls, are obtained either from the specialized computer platform CASHEW developed by CUREE-Caltech Woodframe project, or from available experimental data. The analytical model is confirmed from the comparison to the shaking table tests! The realistic analytical models are developed for three different construction variants for four basic index buildings. Furthermore, these models are modified to represent five different retrofit measures for the index buildings. The seismic performance for all construction is computed and compared using proposed models.
2003-01-30