多層多跨高延展隅撐構架之耐震行為研究

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姓名

林岡岳(Kang-Yueh Lin) 查詢紙本館藏

畢業系所

土木工程學系

論文名稱

多層多跨高延展隅撐構架之耐震行為研究
(Seismic Performance of Multi-Story-Multi-Bay Knee Braced Frames with High Elongation Plate)

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摘要(中)

隅撐構架為一兼顧勁度與韌性之有效結構設計，惟當隅撐構件挫屈後，桿件將因累積塑性變形達其極限，而有斷裂，結構承載性能因之而有甚大減損，為進一步提升結構耐震效能，本研究結合自復位梁柱接頭及高延展隅撐構件，形成高延展隅撐鋼結構，並將之應用於多層結構設計。研究中藉一系列配置不同高延展隅撐組合之構架反覆載重試驗，評估其強度、變形及能量消散能力，以界定其在耐震設計之應用性。研究結果顯示，在梁柱構件保持完整及適當之樓層隅撐強度比(本研究中為下層與上層隅撐強度比值小於1.431)，增加下層隅撐強度可獲致較均勻之樓層位移比。另由試驗結果比較得知，配置高延展隅撐之雙層單跨構架強度可達相同梁柱尺寸抗彎構架強度之2.32至2.57倍，能量消散則為抗彎構架之4.15至4.82倍；配置高延展隅撐之雙層雙跨構架強度可達相同梁柱尺寸抗彎構架強度之1.78至2.05倍，能量消散則為抗彎構架之2.31至2.95倍，此顯示高延展隅撐在多層鋼結構之耐震設計上，具有相當之可行性。

摘要(英)

Knee braced moment resisting frames (KBRF) possess adequate stiffness and ductility, thus are suitable structural forms for earthquake-resistant designs. The performance of KBRF greatly depends on the integrity of the knee braces. When knee braced members buckle under compression, the members may suffer from fracture if the plastic deformation capability is insufficient. This study is focused on the further improvement of multi-story KBRF by adopting high-ductility knee braced members with various brace strength combinations. A series of cyclic loading tests were conducted on the moment resisting frame (MRF) and KBRFs to evaluate the effectiveness of high-ductility knee brace design on the multi-story steel frame constructions. Test results show that the strength of two-story one-bay KBRFs with high-ductility knee braces is 2.32 to 2.57 times of the same-sized MRF, and the energy dissipation is also increased by 4.15 to 4.82 times. The strength of two-story two-bay KBRFs with high-ductility knee braces is 1.78 to 2.05 times of the same-sized MRF, and the energy dissipation is also increased by 2.31 to 2.95 times. It is also found from the comparisons that the improvement in frame performance is higher when the brace strength ratio between the lower and upper stories is higher, provided that the integrity of the beams is sustained. Overall evaluation on the strength, deformation capacity and energy dissipation of the KBRFs validated the effectiveness of the high-ductility knee brace design in the engineering applications.

關鍵字(中)

★ 多層構架
★ 抗彎構架
★ 高延展隅撐構架
★ 耐震性能

關鍵字(英)

★ Multi-story Frame
★ Moment Resisting Frame
★ High-ductility Knee Braced Moment Resisting Frame
★ Seismic Design

論文目次

摘要 I
ABSTRACT II
第一章緒論 1
1-1 前言 1
1-2 研究內容 3
第二章文獻回顧 4
2-1 國內外相關研究 4
2-1-1 抗彎構架相關研究 4
2-1-2 梁柱接頭相關研究 4
2-1-3 斜撐構架相關研究 5
2-1-4 隅撐構架相關研究 6
2-1-5 預力結構相關研究 7
2-1-6 多層多跨結構相關研究 9
2-2 鋼結構設計相關規定 10
2-2-1 強柱弱梁設計 10
2-2-2 梁斷面要求 11
第三章理論分析與有限元素模型建立 12
3-1 前言 12
3-2 自復位梁柱接頭理論 12
3-3 隅撐構件強度 15
3-4 構架反應與隅撐構件之強度關係 16
3-5 有限元素模型建置 19
3-5-1 部件模組 19
3-5-2 屬性模組 20
3-5-3 交互作用模組 20
3-5-4 分析步幅模組 20
3-5-5 負載模組 21
3-5-6 網格模組 21
3-5-7 分析作業模組 21
3-5-8 簡化模型 22
3-6 結語 22
第四章實驗規劃及流程 23
4-1 前言 23
4-2 實驗規劃 23
4-3 研究參數 24
4-4 試體標號及試驗群組 24
4-5 試體製作 25
4-6 試體設備 25
4-7 試驗方法 26
4-8 加載方式 27
第五章實驗觀察與討論 28
5-1 前言 28
5-2 雙層單跨構架試驗 28
5-2-1 抗彎構架試驗(試體S-n) 28
5-2-2 高延展隅撐構架試驗(試體S-7-8) 29
5-2-3 高延展隅撐構架試驗(試體S-7-9) 31
5-2-4 高延展隅撐構架試驗(試體S-7-10) 32
5-2-5 雙層單跨構架之耐震性能評估 34
5-3 雙層雙跨構架試驗 34
5-3-1抗彎構架試驗(試體M-n) 34
5-3-2 高延展隅撐構架試驗(試體M-7-8) 35
5-3-3 高延展隅撐構架試驗(試體M-7-9) 37
5-3-4 高延展隅撐構架試驗(試體M-7-10) 38
5-3-5 雙跨雙層構架之耐震性能評估 40
第六章實驗結果分析與討論 41
6-1 前言 41
6-2 構架強度分析 41
6-2-1 抗彎構架與高延展隅撐構架試驗比較 41
6-2-2 不同隅撐強度與構架強度關係比較 42
6-2-3 小結 43
6-3 能量消散分析 43
6-3-1 抗彎構架與高延展隅撐構架試驗比較 43
6-3-2 不同隅撐強度與構架能量消散關係比較 44
6-3-3 小結 45
6-4 構架變形能力 46
6-5 不同隅撐配置與梁反應關係 47
6-5-1 雙層單跨隅撐構架之隅撐變位比較 47
6-5-2 雙層雙跨隅撐構架之隅撐變位比較 48
6-5-3 配置不同高延展隅撐構架之梁應變比較 49
6-6 有限元素分析與比較 50
6-6-1 分析模擬與構架試驗比較 50
6-6-2 小結 51
第七章結論與建議 52
7-1 結論 52
7-2 建議 53
參考文獻 54

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指導教授

許協隆(Hsieh-Lung Hsu)

審核日期

2017-7-28

推文