1層Z型NCブレース架構の地震応答性状に関する研究

抄録

The authors propose a Z-type NC braced frame having incremental deformation characteristics in an earthquake. Our previous papers did not describe residual deformation of the frame after an earthquake, but a technique for estimating residual deformation needs to be established. Furthermore, elastic strain energy accumulation due to incremental deformation can decrease seismic response behavior. Shaking table tests on a single-story specimen are carried out to clarify the basic performance of this system and numerical analyses are applied to verify reappearance. Numerical analyses of actual-scale single-story braced frames are conducted to clarify seismic response reduction capability due to elastic strain energy accumulation and residual deformation after elasto-plastic oscillation, compared to those for BRB braced frames.