エネルギーの釣合に基づく多層NCブレース架構の地震応答予測

抄録

NC braced frames proposed by the authors have a response reduction capability due to elastic energy accumulation. This paper clarifies seismic response behaviors of multi-story NC braced frames through a time history analysis and expands a seismic response prediction method of single-story NC braced frames to the multi-story frames by reflecting the response behaviors. Verification of the prediction accuracy using 17 seismic ground motions with various spectral characteristics was carried out in a practical range of brace stiffness ratio and damping ratio. The prediction method accurately grasped a trend of the maximum response of the multi-story NC braced frames.