上下動入力を考慮した建物の近似立体振動解析

概要

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The authors have proposed elsewhere an approximate analysis method of building structures for three-dimensional vibrations under biaxial horizontal ground motions, as a result of which the deformation and member forces demonstrate a good agreement to the exact solutions. Nevertheless, the behavior of building structures during the earthquake motions are strongly influenced by the vertical ground motion. In this paper, a new approximate analysis method of building structures for three-dimensional vibrations under the biaxial horizontal and vertical ground motions has been proposed. The proposed method is based on applying the displacement function substitution method, the strain substitution equation method and a method for reduction of dynamic matrices. The finite element models reducing the degree-of-freedom and nodes by the method are analyzed. In conclusion, the analyzed results of the deformation and member forces of the models for the biaxial horizontal and vertical ground motions are approximate to the exact solutions. Three-dimensional vibrations of building structures under the actual ground motions with the biaxial horizontal and vertical ground motions are accurately analyzed by the proposed approximate analysis method with shortened computing time.
一般社団法人日本建築学会の論文
2001-03-20