円形鋼板により耐震補強された角形RC柱の耐震性能に関する実験的研究 : 鋼板板厚と軸力の大きさの影響

概要

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In order to investigate the effects of steel thickness and axial load on the seismic performance of rectangular R/C columns retrofitted with circular steel jacket, a total of ten column specimens with and without circular steel jacket were constructed, and were tested under three different constant axial stresses of 5.6, 13.2 and 19.4MPa, and alternately repeated lateral forces. The seismic performance of three retrofit specimens with different steel thickness are similar under the axial stress of 13.2MPa. In case of the high axial stress of 19.4MPa, the seismic performance were improved with the increase in the steel thickness. The ultimate flexural strength of the circular steel jacket specimens can be predicted by considering confining effects given by the circular steel jacket and R/C stub.
社団法人日本建築学会の論文
2007-02-28