雙孔中空複合構件耐震性能研究

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姓名

李榮忠(Rong-Zhong Lee) 查詢紙本館藏

畢業系所

土木工程學系

論文名稱

雙孔中空複合構件耐震性能研究
(Seismic behavior of twin-cell hollow composite members)

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摘要(中)

本研究針對雙孔中空複合構材，進行一系列實驗研究，藉由15根不同寬深比試體承受彎矩、純扭矩與不同組合反復載重之試驗，探討極限強度、破壞模式、勁度衰減與能量消散行為之影響，並整合文獻[24]所得之5組數據進行研究比較。
研究結果顯示，當構件寬深比(B/D)小於2.857時，寬深比越大，則構件在組合彎矩與扭矩作用下之勁度衰減率較低，能量消散能力亦較佳。耦合板(Coupling Plate)對構件極限彎矩強度與極限扭矩強度之影響不大，惟此耦合板對構件達極限扭矩後之強度維持有所助益，極限強度後之強度衰減速率亦可減緩，且扭轉勁度與消散能量皆可獲得提升，載重偏心程度越大，耦合板之效果越顯著。

摘要(英)

This study focused on the performance evaluation of twin-cell hollow composite members subjected to combined cyclic loads. A series of composite members with various sectional aspect ratios were tested under bending, torsion and their combinations. Test results were used to investigate the effect of sectional aspect ratios on the members’ stiffness, strength and energy dissipation capacities.
It was observed that the deterioration in stiffness was lower for member with higher aspect ratio when the member was subjected to combined bending and torsion. It is also found from the test results that the energy dissipation capacities for members with larger aspect ratios were higher when they were subjected to the combined loads. Comparisons of the results from the test specimens indicated that the effect of coupling plates on the members’ flexural behavior was minor. However, the torsional and flexural-torsional performance of members were significantly enhanced when the members were equipped with the coupling plates. Finally, an empirical expression for strength evaluation of members subjected to combined bending and torsion was proposed for engineering practice purpose.

關鍵字(中)

★ 複合
★ 中空
★ 雙孔

關鍵字(英)

★ composite
★ twin-cell
★ hollow

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...........................2
第二章文獻回顧..............................5
2-1 國內外相關研究...........................5
2-1-1中空斷面之承載特性......................5
2-1-2構件受扭矩之行為........................6
2-2 國內外SRC相關規範........................8
2-2-1 美國ACI設計規範[1].....................8
2-2-2 美國AISC-LRFD設計規範[2]...............9
2-2-3 日本AIJ設計規範[3].....................9
2-2-4 我國設計規範[4]........................10
第三章理論闡述與推導........................11
3-1 彎矩與曲率關係...........................11
3-2 極限彎矩強度─諧和應變法.................12
3-3 極限彎矩強度─疊加法.....................16
3-4 極限扭矩強度.............................17
3-5 EI值估算.................................20
3-6 應變計量測...............................21
第四章實驗規劃與流程........................22
4-1 實驗規劃.................................22
4-2 研究參數.................................23
4-3 試體編號說明.............................23
4-4 試體製作.................................24
4-5 實驗周邊設備.............................26
4-6 實驗方法與流程...........................28
第五章實驗觀察與破壞模式....................31
5-1 實驗觀察.................................31
5-1-1 單向純彎矩系列 (M-P)...................31
5-1-2 反復純彎矩系列 (M-C)...................33
5-1-3 單向純扭矩系列 (T).....................35
5-1-4 反復小偏心載重系列 (SE)................36
5-1-5 反復大偏心載重系列 (LE)................39
5-2 破壞模式比較.............................41
5-2-1 單向純彎矩試驗(M-P)....................41
5-2-2 反復彎矩試驗(M-C)......................42
5-2-3反復小偏心載重試驗(SE)..................42
5-2-4 反復大偏心載重試驗(LE).................43
5-2-5 純扭矩試驗(T)..........................44
第六章結果分析與討論........................45
6-1 強度分析.................................45
6-1-1 極限彎矩強度...........................45
6-1-2 極限扭矩強度...........................45
6-1-3 強度互制關係...........................46
6-1-4 強度衰減...............................48
6-2 勁度衰減.................................48
6-3能量消散..................................49
6-4 耦合板(Coupling Plate)對構件行為之影響...50
第七章結論與建議............................53
7-1 結論.....................................53
7-2 建議.....................................53
參考文獻.....................................55

參考文獻

參考文獻
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指導教授

許協隆(Hsieh-Lung Hsu)

審核日期

2010-7-20

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