震動応答解析法 : 有限要素法のプログラムについて

概要

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It is increasingly needed to analyze the behaviours of various soil structures during the time of earthquakes. One of the most critical problems would be the case in which a heavy massive structure such as a nuclear power plant interacts not only with its foundation but with the neighbouring similar structures. One of the main objectives of the present study is to develop a program which can approximately introduce the nonlinear stress-strain characteristics into soil foundation. Iteration procedure, which is operated together with the equivalent linear method for representing the strain-softening characteristics of soil element, is used for attaining the strain-compatible shear modulus and damping ratio for each finite element. In such a program, damping independent of velocity is used by the aid of complex shear modulus, and thereby it becomes possible to nalyze the high frequency range response which would be an essential part of the above interaction problem.
独立行政法人防災科学技術研究所の論文
1975-10-30