具挫屈控制機制之隅撐構架耐震行為研究

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姓名

李宗儔(Zong-Chou Li) 查詢紙本館藏

畢業系所

土木工程學系

論文名稱

具挫屈控制機制之隅撐構架耐震行為研究
(Performance of frame structure with various knee brace arrangement)

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至系統瀏覽論文 ( 永不開放)

摘要(中)

本研究針對具不同挫屈控制機制隅撐之隅撐抗彎構架進行反覆載重實驗，以界定其耐震性能，由研究結果得知，隅撐抗彎構架中，若加大隅撐尺度則其強度、勁度均將提高，然若隅撐挫屈強度過大則結構強度將由梁構件之破壞控制，因此強度過大之隅撐配置，對於結構耐震性能之提升並無助益。實驗結果亦發現，隅撐挫屈之發生位移比與構架行為有關，若其過早發生，則結構強度及勁度之提升有限；隅撐鋼結構之耐震性能與其隅撐配置方向及尺度有關，在相同切削長度下有效斷面積愈大其消能行為愈佳，另就隅撐構架之設計而言，配置面內挫屈隅撐，應為一較佳之選擇。

摘要(英)

This study focused on the experimental evaluation of the knee-braced moment resisting frames (KBRFs). A series of cyclic loading tests were conducted on the special moment resisting frame (SMRF) and KBRF frames with knee braces applied in the in-plane and out-of-plane buckling directions. It was found from the tests that the structural stiffness of KBRFs increased when knee braces with larger dimensions were used. It was also found from the comparisons that the strength of the knee-braced frames was significantly enhanced no matter the knee braces buckled in the in-place or out-of-plane direction. However, the drift at which the knee brace members reached the buckling stage was higher for KBRF frames with braces installed in the in-plane buckling direction. This phenomenon led to higher energy dissipation that is essential to the effective seismic design of structures. Therefore, it is suggested that braces with in-plane buckling pattern be adopted in the seismic designs of KBRF frame structures.

關鍵字(中)

★ 隅撐構架
★ 挫屈控制機制
★ 耐震設計

關鍵字(英)

★ knee-braced moment resisting frame
★ controllable buckling mechanism
★ seismic design

論文目次

目錄
摘要 I
ABSTRACT II
第一章緒論 1
1-1前言 1
1-2 研究動機 2
1.3 研究內容 4
1.4論文架構 5
第二章文獻回顧 6
2-1 國內外相關研究 6
2-1-1 抗彎構架系統 6
2-1-2梁柱接頭相關研究 7
2-1-3 斜稱構架系統 10
2-1-4 隅撐構架系統 11
2-1-5 端版栓接相關研究 12
2-2鋼結構設計相關規定 13
2-2-1強柱弱梁設計 13
2-2-2梁斷面要求 14
2-2-3梁柱腹板交會區設計 14
2-2-4柱之有效長度係數 15
2-2-5 ASD壓力構件設計規範 16
2-2-6 LRFD壓力構件設計規範 17
2-2-7端板接合之槓檯作用 18
第三章理論分析與有限元素模型建構 20
3-1理論構架彈性勁度及強度分析 20
3-2. 非線性分析 25
3-2-1.具挫屈控制機制之隅撐構架系統其結構行為 25
3-2-2隅撐構架降伏位移及韌性 26
3-3 有限元素分析 27
3-3-1 ABAQUS/Standard 27
3-3-2 ABAQUS/CAE 28
3-4 有限元素模型之建構 29
3-4-1.部件模組（Part） 30
3-4-2.藉由裝配組合模組（Assembly） 30
3-4-3.屬性模組（Property） 31
3-4-4交互作用模組（Interaction） 32
3-4-5分析步模組（Step） 32
3-4-6負載模組（Load） 33
3-4-7網格模組（Mesh） 34
3-4-8作業模組（Job） 35
3-5 結語 35
第四章實驗規劃與流程 36
4-1 前言 36
4-2 主要研究參數 36
4-3試體標號 37
4-4試驗群組 37
4-5試體製作 39
4-6實驗設備 39
4-7 試驗方法 41
4-7-1抗彎構架系統(MRF) 41
4-7-2具挫屈控制機製隅撐構架系統 42
4-8加載方式 43
第五章實驗成果觀察與比較 44
5-1 前言 44
5-2 抗彎構架試驗 44
5-3 具面外挫屈機制之隅撐構架試驗 45
5-3-1 40-4D-Out試驗 45
5-3-2 35-4D-Out試驗 46
5-3-3 30-4D-Out試驗 47
5-3-4 30-3D-Out試驗 48
5-3-5 30-2D-Out試驗 49
5-3-6具面外挫屈控制機制隅撐構架試驗小結 50
5-4具面內挫屈控制機制隅撐構架試驗 51
5-4-1 40-4D-In試驗 51
5-4-2 35-4D-In試驗 52
5-4-3 30-4D-In試驗 52
5-4-4 30-3D-In試驗 53
5-4-5 30-2D-In試驗 54
5-4-6具面內挫屈控制機制隅撐構架試驗小結 55
5-5 試體破壞模式 55
5-6 結語 56
第六章結果分析與討論 58
6-1 前言 58
6-2 強度分析 58
6-2-1 抗彎構架試驗與隅撐構架試驗比較 58
6-2-2 相同拉力強度、不同挫屈強度之隅撐構架比較 59
6-2-3 不同拉力強度、相近挫屈強度之隅撐構架比較 59
6-2-4 隅撐挫屈模式與構架承載強度關係 60
6-3 構架勁度分析 60
6-4 挫屈控制隅撐有效長度係數K之界定 62
6-5 隅撐切削尺度與構件承載行為關係 63
6-5-1 隅撐切削尺度與隅撐變形量 63
6-5-2 隅撐遲滯行為 65
6-6 試體消散能量分析 66
6-7 隅撐尺度與梁柱接頭受力關係 69
6-8 有限元素分析與比較 71
6-9 隅撐切削之設計建議 72
6-10 結語 73
第七章結論與建議 74
7-1 結論 74
7.2 建議 75
參考文獻 76
表目錄
圖目錄
照片目錄

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指導教授

許協隆(Hsieh-Lung Hsu)

審核日期

2010-12-21

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