強震時における構造物の部材破壊後の最大応答変位に関する考察

概要

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In this paper, dynamic behaviors of structural system after fracture of some of the structural elements are investigated through dynamic response analyses using a simple SDOF model with pseudo and recorded ground motions. It was observed that the following two behaviors have great effects on the dynamic behavior; l) A vibrational system after fracture of some structural elements has a sudden loss of restoring force, which increases the displacement according to the rate of loss of the restoring force and 2) the system after fracture has a longer natural period due to loss of stiffness and therefore the maximum displacement becomes close to that of a similar system having the longer natural period. It was shown that, considering these two behaviors, it is possible to predict the maximum displacement of a system after fracture of some of the structural elements.
一般社団法人日本建築学会の論文
2011-03-25