含斜拉鋼筋之中空複合構件於三維載重下之耐震行為

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姓名

陳家祥(Chia-hsiang Chen) 查詢紙本館藏

畢業系所

土木工程學系

論文名稱

含斜拉鋼筋之中空複合構件於三維載重下之耐震行為
(Seismic Performance of Hollow Composite Members with Inclined Bars Under General Loading)

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摘要(中)

本研究針對中空複合構件於三維載重下之承載行為進行探討，主要探討參數為斷面深寬比、三維載重大小與是否配置斜拉鋼筋，研究中針對22根中空複合構件進行組合反覆載重試驗，以評估此類構件之耐震性能。
研究結果顯示，試體於三維載重下，因側向彎矩作用，試體之勁度、極限強度及能量消散皆有顯著衰減，研究中除針對三維載重下之強度互制關係提供建議公式，亦針對斜拉鋼筋應用於複合構件承載性能提升之可行性進行探討。試驗結果證實，斜拉鋼筋不僅對試體抗扭能力有所提升，其對構件在組合載重下之極限後強度與勁度的維持，以及能量消散皆有顯著的貢獻，此顯示斜拉鋼筋應用於中空複合構件耐震設計具有相當之可行性。

摘要(英)

This study investigated the performance of hollow composite members, and the possibility of cross inclined bars in performance improvement for members subjected to earthquake-induced loads. A series of tests on composite members subjected to bending and torsion were conducted. Major parameters studied included the sectional aspect ratios, magnitudes of three-dimensional loads and the placement of cross inclined bars. The test results obtained from the combined load tests were used to define the relationship among member performance, sectional aspect ratios, and the load combinations. The test results showed that the bearing capacity of members significantly decreased when members were under three-dimensional loads. Comparisons of test results also showed that the stiffness and ductility of the strengthened members were significantly increased. Enhancement in energy dissipation further validated the applicability of inclined bars to the performance improvement of hollow composite members.

關鍵字(中)

★ 斜拉鋼筋
★ 斷面深寬比
★ 三維載重

關鍵字(英)

★ inclined bars
★ sectional aspect ratio
★ three-dimensional loads

論文目次

第一章緒論 1
1-1 前言 1
1-2 研究動機與目的 1
1-3 研究方向與內容 3
第二章文獻回顧 5
2-1 國內外相關研究 5
2-1-1 混凝土之圍束 5
2-1-2 混凝土之受扭特性 6
2-1-3 混凝土之多軸受力互制行為 6
2-1-4 中空鋼結構斷面之承載特性 7
2-1-5 複合構件之多軸受力互制行為 8
2-2 國內外SRC相關規範概述 10
2-2-1 美國ACI規範相關規定 10
2-2-2 美國AISC-LRFD規範相關規定 10
2-2-3 日本AIJ規範相關規定 11
2-2-4 台灣SRC規範相關規定 12
第三章相關理論闡述 13
3-1 側向彎矩施加所需偏心距之計算 13
3-2 複合構材之極限彎矩強度 14
3-3 斷面之彎矩-曲率關係 15
3-4 鋼管提供之扭矩強度 16
3-5 斜拉鋼筋提供之扭矩強度 17
3-6 鋼筋混凝土提供之扭矩強度 18
3-7 等效撓曲勁度 18
3-8 破壞方程式 20
第四章實驗規劃與流程 21
4-1 實驗規劃 21
4-2 試體編號與實驗參數 22
4-3 試體製作 23
4-4 實驗設備 25
4-5 應變計量測 26
4-6 實驗方法與步驟 27
第五章實驗觀察與破壞模式 29
5-1 實驗觀察 29
5-1-1 單向純彎矩試驗(M) 29
5-1-2 反覆彎矩加軸力試驗(MP) 31
5-1-3 反覆小偏心加軸力試驗(SEP) 32
5-1-4 反覆大偏心加軸力試驗(LEP) 33
5-1-5 含斜拉鋼筋之反覆大偏心加軸力試驗(LEP-3) 34
5-1-6 反覆小偏心三維載重試驗(SEP25) 36
5-1-7 反覆大偏心三維載重試驗(LEP50) 38
5-1-8 含斜拉鋼筋之反覆大偏心三維載重試驗(LEP50-3) 40
5-1-9 反覆純扭矩載重試驗(T) 41
5-2 破壞模式比較 43
5-2-1 單向純彎矩試驗(M) 43
5-2-2 反覆彎矩加軸力試驗(MP) 43
5-2-3 反覆純扭矩載重試驗(T) 44
5-2-4 反覆小偏心加軸力試驗(SEP) 44
5-2-5 反覆大偏心加軸力試驗(LEP) 45
5-2-6 反覆小偏心三維載重試驗(SEP25) 46
5-2-7 反覆大偏心三維載重試驗(LEP50) 46
第六章結果分析與討論 49
6-1 強度分析 49
6-1-1 單向純彎試驗分析 49
6-1-2 極限彎矩強度 49
6-1-3 極限扭矩強度 50
6-2 強度衰減 50
6-2-1 偏心載重下之複合構材強度 50
6-2-2 三維載重下之複合構材強度 52
6-2-3 強度遞減率 56
6-3 斜拉鋼筋對試體圍束之助益 58
6-4 勁度衰減 60
6-5 能量消散 62
6-5-1 構件承受偏心載重 62
6-5-2 構件承受三維載重 62
6-5-3 斜拉鋼筋對能量消散影響 63
6-6 斜拉鋼筋有效性探討 64
第七章結論與建議 67
7-1 結論 67
7-2 建議 68
參考文獻.. 69

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指導教授

許協隆(Hsieh-Lung Hsu)

審核日期

2009-7-28

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