層せん断余裕率を用いたエネルギー法によるRC骨組の耐震安全性検証

概要

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It is important to estimate maximum story drifts in the current seismic design of RC buildings. There are some propositions to distinguish collapse mode using column-to-beam strength ratio. This index, however, has a little difficulty to apply to buildings that has mixed collapse mode due to weak beams and weak columns. This paper proposes a method based on the energy concept to estimate story drifts of RC frame buildings using a newly defined index 'story-shear-safety factor' based on the reserve strength against the story collapse. As a result, it is possible to predict the maximum response of RC buildings conservatively using the cumulative plastic energy. Further, this paper presents this index is applicable to buildings with weak columns which exhibit strength degradation.
一般社団法人日本建築学会の論文
2003-03-20