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研究生: 薛培函
Pei-han Hsueh
論文名稱: 考慮近斷層效應之Y型隅撐構架耐震行為研究
指導教授: 許協隆
口試委員:
學位類別: 博士
Doctor
系所名稱: 工學院 - 土木工程學系
Department of Civil Engineering
論文出版年: 2018
畢業學年度: 106
語文別: 中文
論文頁數: 196
中文關鍵詞: Y型隅撐構架消能鋼板近斷層地震耐震設計
外文關鍵詞: Y-braced frames, Energy dissipation plates, Near-Fault earthquakes, Seismic design
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  • 由於近斷層地震通常具有較長週期的脈衝震波,對結構物之危害往往比同規模遠域地震大,尤其近十年來國內外幾個知名大地震發生後,近斷層效應影響更是受到重視,故本研究針對具摩擦及挫屈控制機制之Y型隅撐構架,搭配不同尺寸之切削鋼板做為消能裝置,分別使用近斷層歷時進行實驗,以界定其在近斷層耐震設計之應用性及可行性,並比較其與一般地震加載歷時之結構行為。
    由隅撐構架結果實驗結果得知,Y型隅撐構架於近斷層初始之衝擊下,仍可使整體構架於1.8%之內皆保持彈性階段。此外,若搭配適當之消能隅撐,可於消能構件挫屈前,降低梁柱接頭受力,有效延後梁端降伏情形。而整體構架總能量消散方面,仍可保有傳統抗彎構架之1.4~1.6倍,初始構架勁度也較抗彎構架高約4.2倍,顯示此設計於一般地震加載或近斷層加載歷時,皆可有效發揮其效益。對於結構設計,具有相當之可行性。


    Near-Fault earthquakes possess long-period pulse and momentary input energy, thus usually causing severe damage to structures. This study is focused on the performance evaluation of the Y-Shaped knee braced frames with various friction and buckling mechanisms. Responses of framed structures under SAC Near-Fault protocol were compared with those of frames subject to SAC loading protocol to validate the effectiveness of the proposed Y-braced frame designs.
    According to the experimental results, the Y-braced frames could maintain the elastic stage within 1.8% drift ratio under the initial impact of the Near-Fault. It is also shown that the force of the beam-column joints was effectively reduced and the occurrence of plastic hinges was also delayed. Comparisons of test results validated the applicability of Y-braced frames to the seismic designs.

    中文摘要 I Abstract II 誌謝 III 目錄 V 表目錄 X 圖目錄 XI 照片目錄 XIX 第一章 緒論 1 1-1前言 1 1-2研究動機與目的 4 1-3研究方法與內容 5 第二章 文獻回顧 6 2-1國內外相關研究 6 2-1-1抗彎構架相關研究 6 2-1-2梁柱接頭相關研究 7 2-1-3隅撐構架相關研究 8 2-2近斷層相關研究 9 2-2-1近斷層地震之特性 9 2-2-2近斷層地震對結構之影響 11 2-2-3近斷層之加載歷時 11 2-3鋼結構設計相關規定 12 2-3-1柱強度要求[25] 12 2-3-2梁斷面限制[25] 13 2-3-3強柱弱梁設計[26] 13 2-3-4 AISC壓力構件設計要求[26] 15 2-3-5含被動消能系統建築物之設計[27] 16 第三章 理論分析與有限元素模型建立 18 3-2消能鋼板強度之計算 19 3-3隅撐構架彈性勁度與強度之理論分析 22 3-3-1彈性階段之理論分析 22 3-3-2各階段構架勁度分析 29 3-4構架非彈性階段之行為 32 3-4-1 Y型隅撐構架系統之非彈性階段行為 32 3-4-2隅撐構架降伏位移及韌性 32 3-5 有限元素模型建置 33 3-5-1部件模組 (Geometry) 34 3-5-2屬性模組 (Engineering Data) 34 3-5-3交互作用模組 (Connections) 35 3-5-4分析步幅模組 (Analysis Step) 35 3-5-5負載模組 (Load) 35 3-5-6網格模組 (Mesh) 35 3-5-7分析作業模組 (Solution) 36 第四章 實驗規劃與流程 37 4-1前言 37 4-2實驗規劃 37 4-3研究參數 38 4-4試體編號 38 4-5試體製作 39 4-6試驗設備 39 4-7試驗方法 41 4-8加載方式 42 第五章 實驗結果與觀察 43 5-1前言 43 5-2隅撐構架試驗之試驗觀察 43 5-2-1抗彎構架(MRF) 43 5-2-2隅撐構架NF-40-8 44 5-2-3隅撐構架NF-50-8 46 5-2-4隅撐構架 NF-60-8 48 5-2-5隅撐構架 NF-40-10 50 5-2-6隅撐構架 NF-40-12 52 5-2-7隅撐構架 NF-32-10 54 5-3破壞模式比較 56 5-4考慮近斷層之Y型隅撐構架試驗小結 56 第六章 結果分析與比較 58 6-1前言 58 6-2配置不同尺寸消能鋼板之比較 58 6-2-1抗彎構架與隅撐構架試驗比較 58 6-2-2配置相同厚度、不同有效寬度消能鋼板之隅撐構架 58 6-2-3配置相同有效寬度、不同厚度消能鋼板之隅撐構架 59 6-2-4配置相同斷面積、不同慣性矩消能鋼板之隅撐構架 60 6-3能量消散比較 60 6-3-1隅撐構架與抗彎構架比較 60 6-3-2配置不同尺寸消能鋼板隅撐構架比較 61 6-4構架勁度比較 62 6-4-1構架試驗勁度討論 62 6-5一般加載與近斷層加載之比較 64 6-6有限元素分析與比較 65 6-7結語 66 第七章 結論與建議 68 7-1結論 68 7-2建議 69 參考文獻 70

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