鋼構造建築物の修復限界 : 鋼構造建築物の性能設計に関する研究その2

概要

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For the development of performance based design taking into consideration economic losses after earthquakes, the reparability limit should be clarified in order to avoid demolishing. In this paper, the reparability limits of steel structural buildings were investigated based on the actual data of repaired or demolished buildings which were damaged by Hyogoken-nanbu earthquake both from technical and economic points of view. The investigation provided the following results on the reparability limit: 1) overall residual drift angle was 1/110, 2) maximum residual inter-story drift angle was 1/71, 3) ratio of direct restoration cost was 0.86, and 4) ratio of indirect restoration cost was 0.40. Furthermore, based on the actual data, the relationship of residual drift angle and ratio of restoration cost was investigated and the reparability limits synthesizing technical and economic aspects were defined by overall residual drift angle and maximum residual inter-story drift angle as 1/200 and 1/90, respectively.
社団法人日本建築学会の論文
2005-02-28