大スパンアーチトラス構造の弾塑性地震挙動及び座屈拘束部材を用いた場合の応答性状に関する研究
キーワード:
パッシブ制振システム、座屈拘束部材、大スパントラス構造
2003 年 10 巻 38 号 p. 105-118
詳細
2003 年 10 巻 38 号 p. 105-118
In this paper, firstly, we investigate the seismic behavior of a typical steel truss arch, and have found that it may suffer a risk of collapse. Then for the retrofit of existing large span truss structures, a passive seismic control system using Buckling-Restrained Members, abbreviated as BRM, is suggested to enhance the earthquake resistant capacity. Through the elasto-plastic earthquake response analyses, the effect of BRM on reducing the structural seismic responses is confirmed. Finally, based on the result of parametric study, the design base-shear coefficient for BRM and the proper location for incorporating BRM are proposed for this kind of steel truss arch.
