中空鋼骨鋼筋混凝土構材之抗扭耐震效能提昇研究

Improving Seismic Performance of Hollow Steel Reinforced Concrete Members with Inclined Bars

10.6849/SE.201806_33(2).0001

許協隆(Hsieh-Lung Hsu)；洪明德(Ming-Te Hong)

鋼骨鋼筋混凝土 ； 撓曲扭轉行為 ； 斜拉鋼筋 ； steel reinforced concrete ； flexural-torsional behavior ； inclined bars

結構工程

33卷2期（2018 / 06 / 01）

5 - 20

繁體中文

本研究針對中空鋼骨鋼筋混凝土構材於偏心反覆載重下之撓曲扭轉性能進行探討，並以斜拉鋼筋改善構材之相關承載效能，研究中藉由配置不同斜拉鋼筋試體承受扭矩以及不同組合反覆載重之試驗，探討此補強設計對構材極限強度、破壞模式、能量消散行為之影響。研究結果顯示，含斜拉鋼筋之構材在偏心載重作用下，其勁度高於未加斜拉鋼筋之構材，適當配置斜拉鋼筋之構材除強度、韌性以及能量消散能力均較未配置者為佳，構材之扭轉撓曲效能亦可有效提昇，上述結果顯示，應用斜拉鋼筋於中空鋼骨鋼筋混凝土構材設計，具有相當之可行性。

This study focused on the improvement of flexural-torsional behavior of hollow composite members subjected to eccentric cyclic loads. A series of composite members composed of encased steel tubes and reinforced concrete with various inclined bars were fabricated for testing. Member performance was evaluated by the strength, stiffness and energy dissipation during the loading history. Test results showed that the strength of members with inclined bars was significantly increased when subjected to torsion and combined loading coupled with torsion. Enhancement in energy dissipation further validated the applicability of incline bars to the performance improvement of hollow composite members.

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