異なる復元力特性を持つ木造耐力壁構造の耐震性能評価

概要

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The main objective of this study is to confirm a current seismic performance procedure of wood house with various load-displacement relationships. As the seismic performance procedure of Japanese wood house, the amount of the standard value of shear strength has been used widely. The standard value of shear strength is defined as the smallest value calculated from four indexes. The main problem of this method is the applicability of multiple of the standard values combining vaious load-displacement relationships. In this study, the applicability is confirmed through the collapse analysis procedure, based on Incremental Dynamic Analysis (IDA). The same suite of 22 pairs of scaled bi-directional historical ground motion records (44records total) were used as input to the IDAs. Based on the results obtained, the following conclusions can be drawn mainly: 1) It is difficult for ductile shear wall to evaluate using the same procedure for maintaining the same performance of seismic safety as the shear wall of plywood and bracing. 2) Ductile shear wall which does not reach the limit state in displacement shall be ignored.
社団法人日本建築学会の論文
2008-05-30