多層多跨具自復位梁柱接頭隅撐構架之耐震性能研究

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涂崢嶸(Cheng-Jung Tu) 查詢紙本館藏

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土木工程學系

論文名稱

多層多跨具自復位梁柱接頭隅撐構架之耐震性能研究
(Seismic performance of multi-bay-multi-story knee braced frames with dual self-centering mechanisms)

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摘要(中)

隅撐抗彎構架為近年來發展之新型結構系統，其可改善抗彎構架側向勁度不足之問題，亦可有較同心斜撐構架良好之韌性，然當隅撐構架受側向力作用，受壓側之隅撐會產生挫屈行為，導致構架強度驟降，故近年來發展了雙重自復位機制以改善此問題，而雙重自復位機制由具自復位梁柱接頭與自復位隅撐組成。由於實際工程應用上，結構係屬多層多跨形式，故本研究針對具雙重自復位多層多跨構架進行反覆載重試驗，以界定其耐震性能。研究結果顯示，雙重自復位構架可較同尺度之抗彎構架提升 1.66~1.69 倍之構架強度，其勁度亦可提升約 2.91 倍。研究中亦發現，自復位梁柱接頭配置角鋼摩擦消能機制可較無配置者提升約2.38倍之能量消散。另構架在預力系統保持彈性階段時，皆具有良好之自復位能力，可有效降低結構之殘餘變形，且當雙重自復位構架之上層與下層梁柱接頭之結合彎矩比例為1:1.5時，在相同頂層位移下，較上層與下層梁柱接頭之結合彎矩比例為1:1時，提供構架較佳變形能力。研究結果證實，雙重自復位機制可提供構架良好之變形能力與強度，並可有效延後梁構件降伏時機，達到提升結構耐震性能之目的。

摘要(英)

Knee braced moment resisting frame (KBRF) has been developed in recent years. The KBRF system possesses higher stiffness than the moment resisting frame (MRF) and larger ductility than the concentrically braced resisting frame (CBRF), thus is a suitable structural form for earthquake-resistant purposes. However, when the KBRF is subject to heavy cyclic load, the knee braces that contribute to the structural strength will reach the buckling stage, causing major loss in structural performance. In order to improve the structural performance of the KBRF system, a modified design using dual self-centering mechanisms in the knee brace members and the beam-to-column connections was proposed in this study. A set of copper plates were used in the beam-to-column connections to dissipate energy through friction mechanism. A series of cyclic loading tests were conducted on the multi-bay-multi-story KBRFs to evaluate their performance.
It was found from the tests that the strength, stiffness and energy dissipation capacity of KBRF with dual self-centering mechanisms was higher than the MRF with equivalent dimensions. Test results also showed that the major structural members, including beams and columns, remained intact when the structural was subject to large drift, which justified the effectiveness of the proposed method. Further comparisons on the structural performance suggested that the ratio of joint decompression strength between lower and upper stories be approximately 1.5 so that higher structural performance could be achieved.

關鍵字(中)

★ 多跨多層構架
★ 雙重自復位機制
★ 能量消散
★ 耐震效能

關鍵字(英)

★ Multi-bay-multi-story frame
★ Dual self-centering mechanisms
★ Energy dissipation
★ Seismic performance

論文目次

摘要……………………………………………………………………………………I
ABSTRACT…………………………………………………………………………II
誌謝………………………………………………………………………………III
目錄…………………………………………………………………………………V
表目錄………………………………………………………………………………X
圖目錄……………………………………………………………………XI
照片目錄……………………………………………………………………XV
第一章緒論………………………………………………………………………1
1-1前言………………………………………………………………………………1
1-2研究動機與目的…………………………………………………………………3
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抗彎構架相關研究……………………………………………………………6
2-1-2梁柱接頭相關研究……………………………………………………………6
2-1-3斜撐構架相關研究……………………………………………………………8
2-1-4隅撐構架相關研究……………………………………………………………9
2-1-5預力結構相關研究…………………………………………………………10
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………………………………………………………15
2-2-4含被動消能系統建築物之設計……………………………………………16
第三章理論分析與有限元素模型建立……………………………………………18
3-1構架勁度與強度分析……………………………………………………………18
3-1-1線性階段分析………………………………………………………………18
3-1-2多層多跨構架勁度與雙重自復位配置之關係……………………………18
3-2有限元素分析……………………………………………………………………24
3-2-1ABAQUS/Standard分析模組………………………………………………24
3-2-2ABAQUS/CAE前後處理模組………………………………………………24
3-3有限元素模型建置………………………………………………………………26
3-3-1部件模組(Part)………………………………………………………………26
3-3-2組裝模組(Assembly)………………………………………………………27
3-3-3屬性模組(Property)…………………………………………………………27
3-3-4交互作用模組(Interaction)…………………………………………………28
3-3-5分析步模組(Step)……………………………………………………………28
3-3-6負載模組(Load)……………………………………………………………29
3-3-7網格模組(Mesh)……………………………………………………………29
3-3-8作業模組(Job)………………………………………………………………30
3-4結語………………………………………………………………………………30
第四章實驗規劃及流程……………………………………………………………32
4-1前言………………………………………………………………………………32
4-2實驗規劃…………………………………………………………………………32
4-3研究參數…………………………………………………………………………33
4-4試體編號及試驗群組……………………………………………………………33
4-5試體製作…………………………………………………………………………34
4-6實驗設備………………………………………………………………………34
4-7試驗方法…………………………………………………………………………35
4-7-1雙層單跨自復位梁柱接頭構架試驗方法…………………………………35
4-7-2雙層單跨雙重自復位構架試驗方法………………………………………36
4-7-3雙層雙跨自復位梁柱接頭構架試驗方法…………………………………37
4-7-4雙層雙跨雙重自復位構架試驗方法………………………………………38
4-8加載方式…………………………………………………………………………39
第五章實驗觀察與討論……………………………………………………………40
5-1前言………………………………………………………………………………40
5-2實驗觀察…………………………………………………………………………40
5-2-1雙層單跨構架試驗…………………………………………………………40
5-2-1-1具自復位梁柱接頭雙層單跨構架……………………………………40
5-2-1-2具雙重自復位雙層單跨構架…………………………………………43
5-2-1-3小結……………………………………………………………………45
5-2-2雙層雙跨構架試驗…………………………………………………………46
5-2-2-1具自復位梁柱接頭雙層雙跨構架……………………………………46
5-2-2-2具雙重自復位雙層雙跨構架…………………………………………48
5-2-2-3小結……………………………………………………………………50
第六章實驗結果分析與討論………………………………………………………51
6-1前言………………………………………………………………………………51
6-2構架強度分析……………………………………………………………………51
6-2-1雙層單跨自復位梁柱接頭構架與雙重自復位隅撐構架試驗比較……51
6-2-2不同雙重自復位機制配置之雙層單跨構架比較…………………………52
6-2-3雙層雙跨自復位梁柱接頭構架與雙重自復位隅撐構架試驗比較………52
6-3構架勁度分析……………………………………………………………………53
6-4自復位機制與樓層承載行為關係………………………………………………54
6-4-1雙層單跨具自復位梁柱接頭構架SC*-Ln-Ln……………………………54
6-4-2雙層單跨具自復位梁柱接頭構架SC-Ln-Ln………………………………54
6-4-3雙層單跨具自復位梁柱接頭構架SC-Ln-Sn………………………………55
6-4-4雙層單跨具雙重自復位構架SD-Ll-Ls……………………………………55
6-4-5雙層單跨具雙重自復位構架SD-Ll-Ss……………………………………56
6-5能量消散分析……………………………………………………………………57
6-6隅撐與梁柱接頭受力關係………………………………………………………58
6-7有限元素分析與比較……………………………………………………………59
6-8結論………………………………………………………………………………60
第七章結論與建議…………………………………………………………………61
7-1結論………………………………………………………………………………61
7-2建議………………………………………………………………………………62
參考文獻……………………………………………………………………………63

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指導教授

許協隆(Hsieh-lung Hsu)

審核日期

2015-1-26

推文