研究生: |
洪睿呈 JUI-CHENG HUNG |
---|---|
論文名稱: |
對角線鋼筋混凝土連接梁在固定軸向勁度下之往復載重行為 Cyclic Behavior of Diagonally Reinforced Concrete Coupling Beam with Fixed Axial Stiffness Level |
指導教授: |
鄭敏元
Min-Yuan Cheng |
口試委員: |
陳正誠
Cheng-Cheng Chen 黃世建 Shyh-Jiann Hwang 歐昱辰 Yu-Chen Ou 鄭敏元 Min-Yuan Cheng |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 營建工程系 Department of Civil and Construction Engineering |
論文出版年: | 2023 |
畢業學年度: | 111 |
語文別: | 中文 |
論文頁數: | 181 |
中文關鍵詞: | 對角線 、鋼筋混凝土連接梁 、軸向勁度束制 、軸向勁度 、剪力需求 、跨深比 |
外文關鍵詞: | diagonal, reinforced concrete coupling beam, axial stiffness restraint, axial stiffness, shear demand, aspect ratio |
相關次數: | 點閱:207 下載:9 |
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耦合剪力牆系統為一種經濟且高效率之抗側力系統,實務上常作為主要抗震元件,可有效地控制結構物的位移角。在強地震往復作用下,連接梁在沒有軸向束制的情況下會因鋼筋降伏而產生殘餘軸向變位,但實際上連接梁軸向變形會受到面內勁度相當高的剪力牆束制,鋼筋混凝土構件受到軸力作用一般而言會提升撓曲強度但損失變形能力,過去雖然已有部分學者針對此議題從事相關研究,但大部分測試都是在固定軸壓方式進行,而連接梁應該比較接近固定勁度的方式承受軸向束制,據此,本研究計畫有系統的規劃一系列試體,期望透過實驗結果能提供此領域更多參考資訊。
本研究規劃七組連接梁試體來探到不同軸向勁度對鋼筋混凝土剪力連接梁往復載重行為的影響。所有試體均以對角線鋼筋作設計,僅一作為傳統梁配筋方式搭配斜向繫筋,主要測試變數包含(1)連接梁剪力需求,以及(2)連接梁軸向束制勁度。試驗結果顯示結果可觀察到高、低設計剪力(即配筋量),以及不同軸向勁度束制對極限 位移角du的影響並不顯著。
Coupled shear wall systems are a type of economical and highly efficient lateral force resisting system, typically employed as a major seismic element, effectively controlling the interstory drift of structures. Under strong seismic reciprocation, the connecting beams, without axial restraint, may experience residual axial displacement due to reinforcement yielding. However, in reality, the axial deformation of the connecting beam is restrained by the in-plane stiffness of the shear wall, which is quite high. Reinforced concrete components subjected to axial forces generally increase their flexural strength but lose deformability. Although some scholars have conducted related research on this topic, most tests are performed under fixed axial pressure. The connecting beam should more closely resemble fixed stiffness when subjected to axial restraint. Based on this, this study systematically plans a series of specimens, hoping that the experimental results can provide more reference information for this field.
This study plans seven sets of coupling beam specimens to investigate the effect of different axial stiffness on the cyclic loading behavior of reinforced concrete shear coupling beams. All specimens are designed with diagonal reinforcement, with only one using traditional beam reinforcement method in conjunction with diagonal stirrups. The main test variables include (1) shear demand of the coupling beam, and (2) axial restraint stiffness of the coupling beam. The test results show that the effects of different design shear and fixed axial stiffness restraints on the ultimate interstory drift angle du are not significant.
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鄧莉亞,2023,「鋼筋混凝土低矮剪力牆介面剪力行為_跨深比0.5」 ,碩士論文 ,國立臺灣科技大學營建工程系 ,台北。