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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 廖文正 | |
dc.contributor.author | Chia-Chun Kuo | en |
dc.contributor.author | 郭珈均 | zh_TW |
dc.date.accessioned | 2021-06-17T08:36:52Z | - |
dc.date.available | 2020-08-18 | |
dc.date.copyright | 2019-08-18 | |
dc.date.issued | 2019 | |
dc.date.submitted | 2019-08-08 | |
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[36] 郭耀仁,2012,「高強度鋼纖維混凝土的力學性質與圍束效應之研究」,碩士論文,國立台灣大學土木工程學研究所,台北。 [37] 中華民國結構工程協會,2017,「高強度鋼筋混凝土結構設計手冊」台北。 [38] 李宏仁,2000,「鋼筋混凝土耐震梁柱接頭剪力強度之研究」,博士論文,國立台灣科技大學營建工程學系,台北。 [39] 李翼安,2013,「鋼筋混凝土短柱受剪破壞之側力位移曲線研究」,博士論文,國立台灣大學土木工程學研究所,台北。 [40] 涂耀賢,2005,「低矮型RC牆暨構架之側向載重位移曲線預測研究」,博士論文,國立台灣科技大學營建工程學系,台北。 [41] 陳弘錡,2015,「高強度鋼筋加勁超高性能纖維混凝土低矮型剪力牆之反覆載重行為」,碩士論文,國立中央大學土木工程學研究所,桃園。 [42] 曾鈺軒,2017,「鋼纖維混凝土於外部梁柱接頭剪力強度評估與設計建議」,碩士論文,國立台灣大學土木工程學研究所,台北。 [43] 張凱越,2017,「高強度鋼纖維混凝土外部梁柱接頭剪力強度與反復側推行為研究」,碩士論文,國立台灣大學土木工程學研究所,台北。 [44] 陳韋丞,2018,「高強度鋼纖維混凝土深梁剪力行為研究」,碩士論文,國立台灣大學土木工程學研究所,台北。 [45] 葉智強,2015,「添加高強度端鉤型鋼纖維之高強度鋼筋混凝土橋柱之反覆側推行為分析與模擬」,碩士論文,國立台灣大學土木工程學研究所,台北。 [46] 中國土木水利學會,2018「混凝土工程設計規範,土木401-107」,台北。 [47] 何郁姍,2016,「藉由貯鹽試驗及鹽霧加速劣化試驗探討高強度混凝土添加鋼纖維之耐久性」,碩士論文,國立台灣大學土木工程學研究所,台北。 [48] 蘇韋如,2016,「添加高強度端鉤型鋼纖維於外部梁柱接頭之反覆側推行為研究」,碩士論文,國立台灣大學土木工程學研究所,台北。 | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/74457 | - |
dc.description.abstract | 近年來高樓結構需求提升,各國陸續發展高強度混凝土材料,且台灣在高強度材料的使用也日漸普及(例如台灣NEW RC計畫),然而,高強度混凝土達極限強度後常伴隨產生脆性破壞疑慮。台灣地震活動頻繁,結構物必須擁有足夠之耐震能力,此外,結構中存在許多載重不連續區及幾何不連續區,其破壞模式通常為脆性之剪力破壞,為避免高剪力作用下導致試體產生脆性破壞,設計時常保守採大量剪力箍筋圍束混凝土,但過度加密的剪力箍筋將導致施工困難。
根據多項研究顯示,透過添加鋼纖維於混凝土中,可明顯提升混凝土材料之韌性,且透過額外橋接效應有效抑制混凝土裂縫生成,並取代部分橫向鋼筋的角色,同時解決高剪力脆性破壞及箍筋綁紮過密的施工問題。本研究著重於探討高強度鋼纖維混凝土使用於構件不連續區之力學行為,並期望提出鋼纖維混凝土瓶狀壓拉桿之設計建議。 本研究採鋼纖維體積取代率(0%、0.75%及1.5%)及鋼筋配置位置作為設計參數,製作24座長、寬、高尺寸分別為90cm×90cm×10cm的高強度混凝土及高強度鋼纖維混凝土平版試體,並進行直壓試驗。實驗結果顯示,隨鋼纖維體積取代率的提高,可使試體由脆性之劈裂破壞轉變為混凝土壓桿擠碎破壞,有效增加試體韌性,且添加鋼纖維之高強度混凝土試體,可提升平版試體極限強度達40%以上。另透過分析不同鋼纖維體積取代率試體之壓桿擴散角度及試體鋼筋應變ε_s,以有效混凝土面積之型式提出鋼纖維於瓶狀壓拉桿模型內之拉桿貢獻,分析結果顯示,相較於一般混凝土平版試體,鋼纖維體積取代率0.75%及1.5%之平版試體可分別提升2.2倍及2.9倍的鋼纖維混凝土拉桿強度、40%及50%的有效面積。綜上所述,添加鋼纖維於混凝土中除可取代部分橫向鋼筋提供混凝土橫向拉力,亦可有效提升試體強度、韌性及圍束能力。 | zh_TW |
dc.description.abstract | In recent years, the demand of high-rising structures increases, so development and application of high strength materials have been facilitated either in research and practice. The Taiwan New RC Project using high strength concrete along with high strength rebars to reduce the member section sizes and save materials consumption have been conducted since 2009. However, the brittle failure modes owning to the nature of high strength concrete could be a major concern.
In Taiwan, which locates on Pacific Ring of Fire, structures need to have sufficient seismic capacity. In addition, there are many load discontinue regions and many geometric discontinue regions (D-regions) in structures. The failures of these regions are usually caused by shear accompanying with sudden and brittle failure patterns. In order to ensure strength and ductility of structure members, higher transverse reinforcement ratio is required. However, dense transverse reinforcement arrangement will lead to construction difficulty. According to many experiment results, adding steel fiber in concrete can notably enhance ductility, tensile strength, shear strength and damage tolerance of concrete and prevent cover spalling in the early stage. Fibers can be an effective alternative to transverse reinforcements to solve the congestion problem. The objective of the study is to investigate the isolated strut behavior of high strength steel fiber reinforced concrete panels for further development of bottle-shaped strut-and tie model. The experimental program involves 24 panels fabricated with different volume fractions of steel fiber (0%, 0.75%, 1.5%) and different transverse reinforcement location. The test results show that the failure mode can be transferred from splitting failure to strut failure by adding 0.75% and 1.5% volume fraction of steel fibers. The ultimate shear strength can be increased more than 40% with addition of fibers. Moreover, by analyzing the strut-spreading angle of the specimens and the strain of transverse reinforcements, it showed that the tensile strength of concrete in ties can be increased by 2.2 times and 2.9 times by adding 0.75% and 1.5% fibers, compared to concrete without fiber, respectively. Furthermore, the effective concrete area can be increased by 40% and 50% by adding 0.75% and 1.5% fibers, compared to concrete without fiber, respectively. In summary, the addition of steel fiber can replace the transverse reinforcements to provide tensile strength in the concrete, and can also effectively enhance the strength, ductility and ability of confinement of the specimens. | en |
dc.description.provenance | Made available in DSpace on 2021-06-17T08:36:52Z (GMT). No. of bitstreams: 1 ntu-108-R06521229-1.pdf: 23492027 bytes, checksum: 789f3c6cc9dcd94c44cd292bbf98110e (MD5) Previous issue date: 2019 | en |
dc.description.tableofcontents | 誌謝 i
摘要 ii Abstract iii 目錄 v 表目錄 ix 圖目錄 xi 符號目錄 xvii 第一章、 緒論 1 1.1. 動機與目的 1 1.2. 研究範圍與內容 3 1.3. 研究流程圖 4 第二章、 文獻回顧 5 2.1. 高強度鋼筋混凝土 5 2.1.1 高強度混凝土 5 2.1.2 高強度鋼筋 6 2.2. 鋼纖維混凝土 7 2.2.1 添加鋼纖維於混凝土之力學性質影響 7 2.2.2 鋼纖維混凝土直拉行為 11 2.2.3 端鉤型鋼纖維之拉拔行為 14 2.3. 結構不連續區(D區) 23 2.3.1 D區構件之力學行為 23 2.3.2 構件之破壞模式 24 2.4. 壓拉桿模型 26 2.4.1 拉桿 26 2.4.2 壓桿 26 2.4.3 節點 28 2.5. American Concrete Institute之壓拉桿規範 31 2.6. 軟化壓拉桿模型 33 2.7. 鋼纖維混凝土軟化壓拉桿模型 39 2.7.2 鋼纖維混凝土軟化壓拉桿梁柱接頭之抗剪模型 40 2.7.3 鋼纖維混凝土軟化壓拉桿深梁之抗剪模型 42 2.8. 平版試驗 43 2.8.1 平版試驗文獻 43 2.8.2 平版試驗文獻整理表格 55 第三章、 實驗計畫 58 3.1. 實驗背景 58 3.2. 試體設計 59 3.2.1 試體參數與名稱 59 3.3. 實驗材料與配比 61 3.3.1 實驗材料 61 3.3.2 實驗配比 62 3.4. 平版試體製作 63 3.4.1 鋼筋應變計黏貼 63 3.4.2 試體澆置 65 3.4.3 混凝土應變計黏貼 66 3.5. 實驗儀器與配置 67 3.5.1 試體架設 67 3.5.2 量測系統 69 3.5.3 其他相關設備 71 3.6. 實驗施作流程 71 3.6.1 前置作業 71 3.6.2 加載歷程 72 第四章、 實驗結果 73 4.1. 材料試驗 73 4.1.1 混凝土圓柱抗壓試驗 73 4.1.2 鋼筋拉伸試驗 74 4.2. 平版試驗 76 4.2.1 裂縫發展及試體破壞情形 76 4.2.2 平版開裂強度及極限強度 81 4.2.3 力量位移曲線 83 4.2.4 配置鋼筋應變 88 4.2.5 混凝土應變 94 4.2.6 平版試體主拉應變及主壓應變 97 第五章、 ABAQUS三維有限元素平版模擬 99 5.1. ABAQUS簡介 99 5.2. 模型建立與參數設定 100 5.2.1 幾何模型 100 5.2.2 材料性質 102 5.2.3 交互作用 102 5.2.4 網格劃分 103 5.2.5 邊界與載重條件 103 5.2.6 分析步驟與時間 103 5.3. ABAQUS模型分析結果 104 第六章、 結果與討論 108 6.1. 平版試驗結果比較 108 6.1.1 破壞模式比較 108 6.1.2 力量位移曲線比較 114 6.1.3 韌性比較 116 6.1.4 受壓寬度比較 118 6.2. 鋼纖維混凝土拉桿有效面積 120 6.3. 混凝土壓桿破壞試體之實際折減係數 124 6.4. 各強度預測模型比較 125 6.4.1 ACI壓桿強度 126 6.4.2 鋼纖維軟化壓拉桿 127 6.4.3 過渡應力場理論 132 第七章、 結論與建議 135 7.1. 結論 135 7.2. 建議 137 參考文獻 139 附錄A 各載重下試體鋼筋應變計數據 144 附錄B 各載重下試體混凝土應變計數據 163 附錄C 各平版試體於極限強度下之破壞照片 188 附錄D 試體設計圖說 213 | |
dc.language.iso | zh-TW | |
dc.title | 高強度鋼纖維混凝土版之壓桿行為實驗研究 | zh_TW |
dc.title | Experimental Investigation on Isolated Strut Behavior of High Strength Steel Fiber Reinforced Concrete Panels | en |
dc.type | Thesis | |
dc.date.schoolyear | 107-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 李宏仁,李翼安 | |
dc.subject.keyword | 鋼纖維,平版,高強度混凝土,壓拉桿, | zh_TW |
dc.subject.keyword | steel fiber,panel,high strength concrete,strut-and-tie model,isolated strut, | en |
dc.relation.page | 215 | |
dc.identifier.doi | 10.6342/NTU201902816 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2019-08-10 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 土木工程學研究所 | zh_TW |
顯示於系所單位: | 土木工程學系 |
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