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研究生： 周睮宸
Chou, Yu-Chen
論文名稱： 細長型高強度鋼筋混凝土結構牆之反覆載重行為
Cyclic Behavior of Slender RC Structural Walls Reinforced with High Strength Steel
指導教授： 洪崇展
Hung, Chung-Chan
學位類別： 碩士
Master
系所名稱： 工學院 - 土木工程學系
Department of Civil Engineering
論文出版年： 2019
畢業學年度： 107
語文別： 中文
論文頁數： 270
中文關鍵詞： 鋼筋混凝土 、細長型結構牆 、高強度鋼筋 、反覆載重 、有限元素模型
外文關鍵詞： Reinforced concrete, Slender structural walls, High strength steel, Cyclic loads, Finite element model
相關次數： 點閱：175  下載：35 
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    • 根據ACI 318-19規範，使用於特殊結構牆腹版縱向撓曲鋼筋之降伏強度不得大於700 MPa以避免結構牆脆性破壞之發生，且目前使用高強度鋼筋於細長型結構牆的研究相當有限，本研究根據ACI 318-19規範設計四座高剪力需求之細長型結構牆進行測試，觀察其耐震行為，探討ACI 318-19規範是否適用於高強度材料細長型結構牆之設計，並根據沈笠筠 (2016) 與謝秉倫 (2017) 依照修正場理論 (MCFT) 建議之OpenSees模型驗證四座試體。
    根據試驗結果，高強度鋼筋之較大降伏應變會延遲高剪力需求之細長型結構牆之非線性行為，使高剪力需求之結構牆趨於脆性破壞，並降低其塑鉸發展之能力約60 %，且無法提升其側向勁度與抗剪變形能力，僅能降低結構牆剪力滑移分量約47 %，故應避免使用高強度鋼筋於高剪力需求之細長型結構牆以避免脆性破壞之發生。提升混凝土強度約46 %能分別提升細長結構牆之側向勁度與總消散能量約11 %與28 %，並降低約45 %之剪力滑移分量，然而高強度混凝土於潛在破壞面產生時，此破壞面會快速發展，使結構牆側向勁度於試驗後期衰減較為快速，其勁度衰減率於位移比1.5 %後提高約32 %。此外，反覆載重與單向載重對於細長型結構牆之側向強度、勁度與消能能力之影響無明顯差異，惟反覆載重會使細長型結構牆之剪力滑移量增加約20 %。
    因沈笠筠 (2016) 與謝秉倫 (2017) 以修正壓力場理論提出之分析模型為應用於高韌性鋼筋混凝土結構牆，基於試驗結果與參數研究，修正模型遲滯行為之參數，並以0.0075作為剪力模型混凝土拉應變之容許拉應變，使其能更準確預測細長型結構牆之反覆載重遲滯行為。其中剪力滑移彈簧若採用考慮破壞模式非剪力滑移破壞之結構牆達標稱撓曲強度後滑移位移量可能會較明顯提升現象之S2模型時，能較準確預測細長型結構牆之強度發展與剪力滑移發展。

    There remain very few studies on the application of high-strength steel on slender structural walls. Four slender structural walls with an aspect ratio of 2.75 and high shear demand were tested under combined lateral and axial loads to investigate the impact of high-strength steel and concrete materials on the seismic behavior of slender RC walls. Then, verified the experimental results with finite element models based on Modified Compression Field Theory (MCFT).
    According to experimental results, high-strength steel postponed the inelastic behavior of the slender walls, leading the slender walls with high shear demand to a brittle failure mode and limited the development of the plastic hinge. The high-strength steel had a little impact on the lateral stiffness and the shear deformation of the slender walls but decreased the shear sliding deformation component. Therefore, it should be avoided to apply high-strength steel on slender structural walls with high shear demand to prevent a brittle behavior. Increased the concrete strength about 46 percentage increased 11 percentage and 28 percentage of the lateral stiffness and total energy dissipation and decreased 45 percentage of shear sliding deformation component. Cyclic loads had an imperceptible influence on the lateral strength, stiffness and ability of energy dissipation of slender walls but increased the shear sliding deformation component.
    Based on experiment and parameter study, finite element models founded on MCFT were recommended to predict the development of lateral strength and shear sliding deformation.

    摘要 I 目錄 VIII 表目錄 XII 圖目錄 XV 第一章 緒論 1 1.1 研究動機 1 1.2 研究目的 1 1.3 研究方法 2 第二章 文獻回顧 4 2.1 高強度混凝土 4 2.2 結構牆耐震性質 5 2.3 超高性能纖維混凝土結構牆 17 2.4 設計方法 24 2.4.1 ACI 318-19 第11章規範介紹 24 2.4.2 ACI 318-19-18.10規範介紹 29 2.5 結構牆之非線性分析 30 2.6 修正壓力場理論 33 2.6.1 修正壓力場應用於結構牆分析 34 第三章 試驗規劃及設置 35 3.1 試驗規劃 35 3.2 細長型結構牆設計 35 3.2.1 試體尺寸 35 3.2.2 試驗參數 36 3.2.3 試體命名 36 3.2.4 試體配筋 37 3.3 試體製作 44 3.3.1 鋼筋應變計黏貼 44 3.3.2 上、下基礎梁及腹版之鋼筋籠組立與模板組立 48 3.3.3 試體灌漿與養護 52 3.4 試驗架設 54 3.4.1 裝設系統 55 3.4.2 量測系統 58 3.4.3 施力系統 61 3.5 材料試驗 64 3.5.1 圓柱抗壓試驗 64 3.5.2 鋼筋拉力試驗 67 3.6 試驗數據處理 69 3.6.1 結構牆真實位移 69 3.6.2 結構牆降伏點、最大位移與韌性比 70 3.6.3 牆體勁度 71 3.6.4 能量消散 71 3.6.5 塑性鉸 73 3.6.6 鋼筋應變 74 3.6.7 結構牆腹版之剪力變形 75 3.6.8 撓曲、剪力與滑移位移分量 77 3.6.9 反曲點 81 第四章 試驗結果與討論 82 4.1 結構牆反覆載重試驗 82 4.1.1 HSC-NS-C試體反覆載重試驗 83 4.1.2 HSC-HS-C試體反覆載重試驗 91 4.1.3 HSC-HS-M試體反覆載重試驗 98 4.1.4 NSC-HS-C試體反覆載重試驗 106 4.2 試驗結果 115 4.2.1 遲滯迴圈 115 4.2.2 裂縫發展情形 127 4.2.3 上下基礎梁旋轉角與牆體面外旋轉角 128 4.2.4 反曲點 131 4.2.5 破壞包絡線 134 4.2.6 牆體勁度 137 4.2.7 邊界構材撓曲主筋之應變 141 4.2.8 腹版縱向鋼筋之應變 166 4.2.9 腹版水平剪力鋼筋之應變 179 4.2.10 腹版混凝土之剪應變 196 4.2.11 能量消散 201 4.2.12 撓曲、剪力與滑移位移 203 4.2.13 塑性鉸 207 第五章 結構牆分析模型 209 5.1 基本模型建立 209 5.1.1 混凝土材料模型 210 5.1.2 鋼筋材料模型 211 5.2 結構牆剪力行為模擬 212 5.2.1 混凝土材料組成律 213 5.2.2 單向載重作用下之側力位移曲線 215 5.2.3 反覆載重作用下之側力位移遲滯迴圈 223 5.3 結構牆剪力滑移行為模擬 225 5.3.1 單向載重作用下之側力位移曲線 225 5.3.2 反覆載重作用下之側力位移曲線 229 5.4 細長型結構牆分析 230 5.4.1 模型參數設定 230 5.4.2 細長型結構牆分析結果 237 第六章 結論 247 第七章 建議 250 參考文獻 251 附錄A 各試體之MCFT計算結果 261 附錄B 各試體之剪力強度計算結果 264 附錄C 各試體之撓曲強度計算結果 265 附錄D 試體曲率與剪應變 269

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