韌性斜撐構材( Buckling Inhibited Brace , BIB)是由主受力元件與側撐元件組成，其軸力由主受力元件承擔，側撐元件提供主受力元件連續之側向支撐，防止主受力元件受壓挫屈。本研究將BIB構材應用於自行復位同心斜撐構架系統(SC-CBF)及桁架梁構架系統，並採用ANSYS有限元素分析軟體進行非彈性反復載重分析，探討兩構架系統之遲滯行為。
自行復位同心斜撐構架系統(SC-CBF)係由同心斜撐構架、預力鋼腱及BIB構材所組成，地震作用下藉由同心斜撐構架底部開縫之結構行為使BIB消散能量，並利用預力鋼腱將構架自行復位回原點。本研究主要參數有鋼腱預應力大小、鋼腱額外長度、BIB消能段強度、鋼腱面積、構架高寬比、增加垂直載重、預力鋼腱配置位置及以附加BIB柱構材取代同心斜撐構架中之部份柱構材。研究結果可以得到以下結論：(1) 鋼腱預應力大小、鋼腱額外長度、BIB消能強度、鋼腱面積、構架高寬比均為設計時可調整構架行為之參數；(2) 垂直載重對於SC-CBF構架強度有很好之幫助；(3) SC-CBF構架在地震力作用時構架之柱構材產生不可忽略之垂直位移；(4) 鋼腱配置於鋼板剪力牆中間之構架，其性能最佳；(5) 預力鋼腱配置於鋼板剪力牆兩端且底部設有基座之構架，可以降低一樓柱之垂直位移；(6) 以附加BIB柱構材取代同心斜撐構架中之部份柱構材，可以降低一樓柱之垂直位移。
桁架梁構架系統，由柱與桁架梁所組成，將BIB構材運用到桁架梁桿件中，以改善傳統桁架梁構架延展性不佳之缺點。研究結果可以得到以下結論：(1) 將BIB設置於桁架梁構架兩端之下弦桿為較佳之配置；(2) 桁架梁構架將BIB置於兩端下弦桿，其梁中點位移變化較小，結構行為較一般抗彎矩構架佳。

A Buckling Inhibited Brace, or BIB, is composed of a main load-carrying element and a lateral-support element. The axial forces are taken only by the main load-carrying element. The lateral-support element provides continuous lateral support for main load-carrying element to prevent the load-carrying element from buckling. The aim of this study is the application of BIBs in Self-Centering Steel Concentrically-Braced Frame Systems (SC-CBFs) and Truss-Girder Frame Systems (TGs). Software ANSYS was used to investigate the hysteretic behavior of the two systems.
SC-CBFs consist of CBFs, prestress tendons, and BIBs. Gap-opening behavior at the bottom of these systems makes BIBs dissipate energy, and prestressed tendons will pull the structure back to its original position.The mainly parameters are pre-stress level, tendon extended length, strength in energy dissipated zone of BIBs, tendon areas, height-width ratio, increment of vertical loading, the location of prestressed tendons, and the part of columns replaced by BIBs in concentrically braced frame. Results obtained from this study are as follows : (1) pre-stress level, tendon extended length, strength of BIBs, tendon areas, and height to width ratio of frame are the parameters that affect the behavior of SC-CBF；(2) vertical loading can increase the strength of SC-CBF；(3) The vertical displacement of SC-CBF caused by lateral force is quite significant；(4) The frame with tendons installed in the middle of steel shear walls has the best hysteretic behavior；(5) The frame with tendons installed on the ends of steel shear walls can decrease vertical displacement of the column in the first floor；(6) Use BIB as column member in concentrically braced frame can decrease vertical displacement of the column.

TG systems consist of columns and truss-girders. In this research we apply BIBs in truss-girders to improve ductility. Results obtained from this study are as follows：(1) It will be a better configuration to install BIBs on the bottom chords of both ends of truss girder in a frame；(2) BIBs on the bottom chords of both ends of truss girders in a frame cause the smaller displacement in the middle point of girders, and the structural behavior is better than that of ordinary moment resisting frames.

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