上下地震動を受ける単層ラチスドームの動特性について

概要

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The purpose of this study is to analyze the elasto-plastic response considered geometric nonlinear behaviors for two analysis models with different boundary conditions, and is to investigate dynamic characteristics of single layer lattice domes subjected to vertical earthquake motions that are TAFT-UD and KOBE-UD. In particular, the aim of numerical analysis is to obtain the maximum acceleration of input earthquake motions to lead the collapse of domes in this dynamic analysis. Analysis models are two kinds of domes with pinned supports and radius direction roller supports. The following results were found through numerical experiments. 1) The deformations of collapsed domes hardly change by different static safety factors and vertical earthquake motions. 2) Since the magnitude of collapse acceleration correlate closely with natural periods of domes and spectrum of vertical earthquake, it is not always in proportion to the values of static safety factors.
社団法人日本建築学会の論文
2000-11-30