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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 | Wei-Cheng Chen | en |
dc.contributor.author | 陳韋丞 | zh_TW |
dc.date.accessioned | 2021-06-17T06:28:35Z | - |
dc.date.available | 2019-08-20 | |
dc.date.copyright | 2018-08-20 | |
dc.date.issued | 2018 | |
dc.date.submitted | 2018-08-16 | |
dc.identifier.citation | [1] ACI Committee, 318, “Building Code Requirements for Structural Concrete (ACI 318-14) and Commentary,” American Concrete Institute, 2014.
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J., “High-Strength Concrete and Reinforcing Steel in Beam-Column Connections,” Structures Congress 2013, ASCE, Proceedings ISBN: 978-0-7844-1284-8, American Society of Civil Engineers, Pittsburgh, Pennsylvania, United States, May 2-4, 2013, pp. 1606-1615, 2013. [23] Wight, J. K., MacGregor, J. G. “Reinforced concrete: Mechanics and design”, Vol. 3. Upper Saddle River, NJ: Prentice Hall, 1997. [24] Mansour, M. Y., Hsu, T. T. C., Mo, Y. L. “Constitutive Relations of Cracked Reinforced Concrete with Steel Fibers” ACI Materials Journal, Vol. 265, pp. 101-122, 2009. [25] Mendis, P. A., Panagopoulos, C., “Applications of High Strength Concrete in Seismic Regions,” 12WCEE:12th World Conference on Earthquake Engineering, 2000. [26] Naaman, A. E., and Reinhardt, H. W., “Characterization of High Performance Fiber Reinforced Cement Composites—HPFRCC,” High Performance Fiber Reinforced Cement Composites 2, Proceedings of the Second International RILEM Workshop, Ann Arbor, MI, pp. 1-24, 1996. 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P., 'Seismic Tests of Concrete Columns with Light Transverse Reinforcement,' ACI Structural Journal, V. 103, No. 6, pp. 842-849., 2006. [33] Song, P. S., and Hwang, S., “Mechanical Properties of High-Strength Steel Fiber-Reinforced Concrete,” Construction and Building Materials, Vol. 18, pp.669-673, 2004. [34] Sugano, S., Kimura, H., and Shirai, K., “Study of New RC Structures Using Ultra-High-Strength Fiber-Reinforced Concrete (UFC)-The Challenge of Applying 200 MPa UFC to Earthquake Resistant Building Structures,” Journal of advanced concrete technology, 5 (2), pp. 133-147, 2007. [35] Sugano, S., “Application of High Strength and High Performance Concrete in Seismic Region,” Invited Lecture in the 8th International Symposium on Utilization of High-Strength and High-Performance Concrete, Tokyo, pp.27-29, October, 2008. [36] Tan, K. H., Kong, F. K., Teng, S. and Guan. L. “High-Strength Concrete Deep Beams with Effective Span and Shear Span Variations” ACI Materials Journal, Vol. 92, No. 4, pp. 395-405, 1995. [37] Xu, B., Ju, J. W., and Shi, H. S., “Progressive Micromechanical Modeling for Pullout Energy of Hooked-end Steel Fiber in Cement-based Composites,” SAGE. International Journal of Damage Mechanics, 2011. [38] 陳俊綺,「薄腹版型高強度混凝土簡支深梁之剪力行為研究」,碩士論文,國立成功大學土木系,台南,1994 [39] 方一匡,「薄腹版型高強度混凝土梁之剪力強度與韌性研究」,國科會專題研究計畫報告,計畫編號:NSC-82-0410-E006-110,台北,1997 [40] 陳智賢,「鋼筋混凝土角隅梁柱接頭之耐震性能測試」,碩士論文,國立台灣工業技術學院營建工程系,台北,1997 [41] 李宏仁,「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,2000。 [42] 李翼安,「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,2013。 [43] 紀凱甯,「TTK’s Products and Structural RC Members Testing」,國家地震中心報告書,2014。 [44] 吳勇福「無腹筋高強度鋼纖維鋼筋混凝土梁撓曲與剪力強度之評估」,碩士論文,國立台灣大學土木工程學研究所,台北,2014。 [45] 曾鈺軒,「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,2017。 [46] 張凱越,「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,2017。 | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/72201 | - |
dc.description.abstract | 近年來高強度材料已逐漸發展成熟,如日本New RC Project,使用高強度材料可以同時縮減斷面尺寸及節省材料用量。然而伴隨著高強度混凝土的缺點是,當材料達極限強度後會發生脆性破壞,因此在使用高強度混凝土時會有安全的疑慮,因此透過添加鋼纖維於高強度混凝土中,可以解決上述之問題。
深梁在結構系統中已被廣泛地使用,然而深梁屬於應力集中之D區,而大多數D區的破壞模式易傾向脆性的剪力破壞。因此使用高強度材料於深梁中的剪力行為應深入探討。本研究使用鋼纖維混凝土澆置深梁,嘗試解決脆性的剪力破壞,並探討鋼纖維對於試體韌性及剪力強度的貢獻。 實驗計畫參照過去相關研究,以鋼纖維取代率(0.75%、1.5%)及橫向鋼筋率(0.0%~1.0%)的搭配,設計10組不同配置的深梁,進行3點不對稱抗彎試驗。其中2組試體與實驗對照組比較,設計撓曲破壞,探討透過添加0.75%鋼纖維轉變其破壞模式。另外8組試體以剪力破壞進行設計,藉此得到深梁的極限剪力強度,釐清鋼纖維於不連續區域D區之貢獻。 由實驗結果發現,添加0.75%體積取代率之鋼纖維,試體由原本的剪力破壞轉變成撓剪破壞,且在達極限強度後的力量位移曲線上,試體仍保有韌性行為。而設計剪力破壞之試體,添加0.75%與1.5%鋼纖維試體之極限剪力強度與軟化壓拉桿公式比較分別可以提升42%與72%。 另外,本研究透過分析不同鋼纖維體積取代率之試體,提出鋼纖維在剪力元素區內作用可視為一均勻的拉桿。也透過實驗結果修正鋼纖維軟化壓拉桿模型,其強度預測模型更貼近實際深梁受剪行為,且修正後模型之位移預測,其結果皆比ASCE/SEI 41-13的預測結果精確。 | zh_TW |
dc.description.abstract | Development and application of high strength materials have been facilitated either in research and practice. The New RC Project conducted by Japan is a success by using high strength concrete along with high strength rebars to reduce the member section sizes and save materials consumption. However, the brittle failure patterns owning to the nature of high strength concrete could be a major concern. Except providing more transverse reinforcement to ensure the member ductility, addition of steel fibers could be an effective alternative.
Deep beams, identified as D-region, are widely used in structures. The performance of deep beams made of high strength materials, even with steel fibers, shall be further explored. The objective of this research is to investigate the shear behaviors, to modify the softened strut-and-tie model, and to propose a force-displacement relationship of high strength fiber reinforced deep beams. The experimental program involves ten specimens were fabricated with different volume fractions of steel fiber (0.75%, 1.5%) and different transverse longitudinal reinforcement ratios (0.0%~1.0%). The test results show that the failure mode can be transferred from shear failure to flexural failure by adding 0.75% volume fraction of steel fibers. Additionally, the ultimate shear strength can be increased by 42% and 72% by adding 0.75% and 1.50% fibers, compared to softened strut-and-tie model, respectively. It is also worth mentioning that the post peak responses are more ductile even under large deformations. By observing the strain field of the shear element, the tensile strength provided by steel fibers could be deemed as equivalent tie in the softened strut-and-tie model and the strain limitations should be modified accordingly. Finally, the force-displacement relationship of high strength fiber reinforced deep beams proposed by this study gives more accurate predictions on responses compared those obtained by ASCE/SEI 41-13. | en |
dc.description.provenance | Made available in DSpace on 2021-06-17T06:28:35Z (GMT). No. of bitstreams: 1 ntu-107-R05521201-1.pdf: 7783187 bytes, checksum: 5f9b3529bb388121b2a4ab24149c9ead (MD5) Previous issue date: 2018 | en |
dc.description.tableofcontents | 誌謝 i
摘要 ii Abstract iii 目錄 v 表目錄 ix 圖目錄 x 照片目錄 xiv 符號目錄 xvi 第一章、 緒論 1 1.1. 動機與目的 1 1.2. 研究範圍與內容 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. 鋼纖維混凝土力學性質 7 2.2.1 添加鋼纖維於混凝土之力學性質影響 7 2.2.2 鋼纖維混凝土受直拉作用下之行為表現 11 2.2.3 端鉤型鋼纖維之拉拔行為 14 2.2.3.1 端鉤型鋼纖維之拉拔機制 14 2.2.3.2 端鉤型鋼纖維之拉拔能量預測模型 15 2.2.3.3 等效握裹強度 22 2.3. 深梁剪力行為 23 2.4. ACI 318-14 R23.4.3 壓拉桿模型 23 2.4.2 壓桿強度預估公式 26 2.4.3 節點強度預估公式 27 2.4.4 拉桿強度預估公式 27 2.5. 軟化壓拉桿模型 27 2.5.1 軟化壓拉桿模型對於深梁之剪力評估 33 2.5.2 軟化壓拉桿模型對於外部梁柱接頭之剪力評估 34 2.6. 鋼纖維混凝土軟化壓拉桿模型 34 2.6.1 鋼纖維混凝土軟化壓拉桿模型對於深梁之剪力評估 35 2.6.2 鋼纖維混凝土軟化壓拉桿模型對於外部梁柱接頭之剪力評估 36 2.7. 力量位移曲線 37 2.7.1 試體剪力開裂點 37 2.7.2 試體極限強度點 38 2.7.3 極限位移點 39 2.8. 本研究之實驗對照組試體-深梁試體 39 第三章、 實驗計畫 41 3.1. 實驗背景 41 3.2. 試體設計 41 3.2.1 試體參數與名稱 41 3.2.2 試體設計細節 47 3.3. 實驗材料與配比 48 3.3.1 實驗材料 48 3.3.2 實驗配比 49 3.4. 實驗試體製作 50 3.4.1 鋼筋應變計黏貼 50 3.4.2 試體澆置 51 3.5. 實驗儀器與配置 52 3.5.1 試體及儀器架設 52 3.5.2 內部量測系統 55 3.5.3 外部量測系統 56 3.5.4 其他相關設備 58 3.6. 實驗施作流程 58 3.6.1 前置作業 58 3.6.2 加載歷程 59 第四章、 試驗結果 60 4.1. 材料試驗 60 4.1.1 鋼纖維混凝土圓柱抗壓試驗 60 4.1.2 鋼筋拉伸試驗 61 4.2. 深梁三點不對稱抗彎試驗 62 4.2.1 深梁之極限應力 62 4.2.2 力量位移曲線 63 4.2.3 深梁主筋應變 68 4.2.4 裂縫發展與試體破壞情形 70 4.2.5 外部量測系統-NDI結果 72 第五章、 結果與討論 80 5.1. 三點不對稱抗彎實驗結果比較 80 5.1.1 S32-S000-HU、S32-S000-TU與S32-S075-TU試體之比較 80 5.1.2 S32-S000-H100、S32-S000-T100與S32-S075-T100試體比較 82 5.1.3 D32-S075-T系列試體之比較 84 5.1.4 D32-S150-T系列試體之比較 87 5.2. 鋼纖維軟化壓拉桿模型修正 89 5.2.1 資料庫分析 89 5.2.2 與對角壓桿方向垂直應變量εr修正 90 5.2.3 鋼纖維貢獻之拉桿指標修正 90 5.2.4 鋼纖維分布影響 92 5.3. 各剪力模型之比較 94 5.4. 箍筋與鋼纖維之體積比 95 5.5. 極限強度後力量位移曲線建議模型 96 5.5.2 剪力開裂點 97 5.5.3 強度點 98 5.5.4 極限後殘餘強度點 100 5.5.5 極限位移破壞點 102 第六章、 結論與建議 104 6.1. 結論 104 6.2. 建議 105 參考文獻 107 附錄A 外部梁柱接頭與深梁資料 113 附錄B 試體應變計數據 124 附錄C 深梁於於極限強度下照片 132 附錄D 試體設計圖說 138 | |
dc.language.iso | zh-TW | |
dc.title | 高強度鋼纖維混凝土深梁剪力行為研究 | zh_TW |
dc.title | Shear Behavior of High Strength Steel Fiber Reinforced Concrete Deep Beams | en |
dc.type | Thesis | |
dc.date.schoolyear | 106-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 詹穎雯,歐昱辰,李宏仁 | |
dc.subject.keyword | 鋼纖維,深梁,New RC,軟化壓拉桿,剪力強度, | zh_TW |
dc.subject.keyword | steel fiber,deep beam,New RC,softened strut-and-tie model,shear strength, | en |
dc.relation.page | 144 | |
dc.identifier.doi | 10.6342/NTU201802974 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2018-08-17 | |
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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