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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 廖文正 | zh_TW |
dc.contributor.advisor | Wen-Cheng Liao | en |
dc.contributor.author | 何奕親 | zh_TW |
dc.contributor.author | Yi-Ching Ho | en |
dc.date.accessioned | 2023-08-15T17:52:04Z | - |
dc.date.available | 2023-11-09 | - |
dc.date.copyright | 2023-08-15 | - |
dc.date.issued | 2023 | - |
dc.date.submitted | 2023-08-04 | - |
dc.identifier.citation | [1] AIJ, "Draft of Guidelines for Performance Evaluation of Earthquake Resistant Reinforced Concrete Buildings," Architectural Institute of Japan, 2004,Tokyo, Japan 400.
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/88807 | - |
dc.description.abstract | 臺灣位於環太平洋地震帶上,因此發生地震的頻率相當頻繁,且由於人口稠密,集合式住宅相當常見,若因地震造成建築物倒塌,受其影響之人口將不計勝數。住宅建築為了滿足使用性設置許多剪力牆體,且為配合採光或用途需求許多是具有門型或是窗型開孔。這些剪力牆雖具有極高之側向強度和勁度,在耐震能力上能提高整體結構之勁度,但在過去震損之調查中也同時發現是地震中震損較嚴重的構件,其破壞經常集中在開孔左右兩側之垂直牆段上,造成整體結構雖未崩塌,但其使用機能已不復存在,民眾亦無法信任其安全性而繼續居住。
近年來,高強度混凝土開始被廣泛使用,國內的規範也逐漸更新並採用,然而該材料雖具有良好的抗壓能力,其破壞模式卻會變得較為脆性,為了維持足夠的結構韌性,需在剪力牆這類不連續區域配置大量圍束鋼筋,而這也造成施工上綁紥鋼筋之不易。 添加鋼纖維於高強度混凝土之中能延緩脆性破壞,由於鋼纖維混凝土的橋接效應與應變硬化效應能有效抑制裂縫寬度之擴張,因此能大幅減少橫向鋼筋以解決施工上的問題,也能消除現今開口剪力牆因裂縫造成的安全疑慮。根據本研究群歷年針對結構不連續區域的研究,包含梁柱接頭與深梁的試驗,透過研究結果發現使用於高強度混凝土中添加鋼纖維可提高構件之抗剪強度其強度點後之韌性,但其力量傳遞機制與基礎軟化拉壓桿模型仍有待近一步研究。 因此本研究承接前一年之研究執行五座高強度鋼纖維混凝土剪力牆試驗,以開孔之有無、開孔型式、牆體鋼筋比、邊界柱主筋量、開孔補強筋配置及開孔兩側之垂直牆段寬度作為試驗參數,欲透過試體強度變形行為和裂縫發展之觀察,得到開孔剪力牆極限剪力與撓曲強度並釐清鋼纖維之效益,修正預測模型並提出建議設計流程做為未來設計之參考。 | zh_TW |
dc.description.abstract | Reinforced concrete walls are commonly used in residential building. Due to functional purpose, opening of windows and doors are required for non-loadbearing walls. Although the existance of shear walls can improve the stiffness of the structure in terms of seismic capacity, it is the component with serious seismic damage during earthquakes. In the earthquake damage investigation, it was observed that the damage was often concentrated on the vertical wall sections beside the opening, which leads to people distrust the safety of walls.
High strength reinforced concrete has been utilized in modern high-rise buildings. Howerver, as the material has higher compressive strength, it become more brittle. In order to maintain certain ductility in high shear demanding area such as shear walls, lots of shear reinforcement are required in design code, which leads to steel congestion and construction difficulties. Studies show that by adding steel fiber into concrete, brittle behavior can be improved and cracks can be restrained effectively because of the bridging action steel fiber provides across microcracks in the matrix, thereby adding steel fiber into concrete is able to replace certain amount of transverse reinforcement so as to attatin a better construction workability as well as eliminate the safety concerns caused by cracks in shear walls with opening. Based on research results conducted on discontinuity regions such as deep beams and beam-column joints, using steel fiber reinforced concrete (SFRC) can promote toughness and shear strength of the components, replacing huge amount of transverse reinforcement. While the benefits of using SFRC in structural discontinuities are known, its force transmission mechanism in shear walls remains to be clarified. In this study, five SFRC walls specimens were carried out to investigate the effect of the types of opening, the ratio of web shear reinforcement, the amount of stirrups in the boundary elements and the strengthening reinforcement of opening. By observing the crack development of the specimen, as well as the strength and deformation behavior, it is concluded that the adding of steel fibers can effectively replace half amount of stirrups in the boundary element and strengthening reinforcement of opening. A model is also proposed to include the tensile strength provided by the steel fiber in the horizontal tensile capavities for equilibrium, which determine a more reasonable height of shear element. The shear strength result are also more accurate than predicted strength by TEASPA. | en |
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dc.description.provenance | Made available in DSpace on 2023-08-15T17:52:04Z (GMT). No. of bitstreams: 0 | en |
dc.description.tableofcontents | 誌謝 I
摘要 V Abstract VII 目錄 IX 表目錄 XIV 圖目錄 XVI 符號說明 XXVIII 第一章、緒論 1 1.1 研究動機與目的 1 1.2 研究方法與內容 2 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 混凝土中添加鋼纖維對於基本力學影響 7 2.2.2 鋼纖維混凝土抗拉試驗之力學行為 13 2.3 鋼筋混凝土剪力牆之力學性質 16 2.3.1 低矮剪力牆的破壞行為 16 2.3.2 美國混凝土協會 ACI 318-19規範[2] 18 2.3.3 剪力牆側力位移曲線 20 2.3.4 AIJ2004損害程度指標 25 2.4 鋼筋混凝土開口剪力牆分析模型 27 2.4.1 開口牆之關鍵桿件臨界高度修正 28 2.4.2 開口牆之傳力途徑選取 31 2.4.3 剪力元素勁度計算 32 2.4.4 側力位移曲線修正與疊加 33 2.4.5 側力位移曲線崩塌點之修正 35 2.5 軟化壓拉桿模型(Soften Strut-and-Tie Model,SST) 39 2.5.1 剪力牆之剪力強度Vn計算式 40 2.5.2 壓拉桿指標K 42 2.5.3 軟化係數ζ 46 2.6 鋼纖維混凝土軟化壓拉桿模型 48 2.6.1 鋼纖維混凝土壓拉桿指標K 48 2.6.2 鋼纖維混凝土軟化係數ζf 49 2.6.3 鋼纖維混凝土軟化係數ζ修正 50 2.7 高強度鋼纖維鋼筋混凝土柱韌性行為研究 53 2.8 高強度鋼纖維混凝土梁剪力行為研究 56 2.9 高強度鋼纖維混凝土開口剪力牆行為研究 59 2.9.1 高強度鋼纖維鋼筋混凝土開口剪力牆設計流程 59 2.9.2 高強度鋼纖維鋼筋混凝土開口剪力牆關鍵桿件修正 61 2.10 鋼筋混凝土牆剪力破壞之應變場建立 63 2.11 剪力牆規範探討 66 2.11.1 土木401-100 [29] 66 2.11.2 ACI 318-19[2] 67 2.12 鋼筋混凝土剪力牆實驗文獻 69 2.12.1 洪詩晴 (2015)高強度鋼筋於低矮剪力牆往復載重行為研究 69 2.12.2 黃銘弘 (2016)高強度鋼筋混凝土開孔剪力牆之相關研究 71 2.12.3 吳怡謙 (2017)高強度鋼筋混凝土開孔剪力牆裂縫控制研究 74 2.12.4 黃淳憶 (2022)高強度鋼纖維混凝土開口剪力牆之相關研究 77 2.13 鋼筋混凝土二元系統之設計與案例探討 80 第三章、試體規劃 82 3.1 試體概述 82 3.2 設計試體細部配筋 82 3.3 試體製作 96 3.3.1 試驗配比 96 3.3.2 施作過程 96 3.4 設計強度預測 103 3.4.1 撓曲強度 103 3.4.2 剪力強度 108 3.4.3 剪力滑移摩擦強度 118 3.5 量測系統 119 3.5.1 內部量測系統 119 3.5.2 外部量測系統 125 3.6 測試佈置 129 3.6.1 固定系統 130 3.6.2 施力系統 131 3.6.3 測試佈置組裝 131 3.7 測試步驟 132 第四章、試驗結果 134 4.1 材料性質 134 4.1.1 混凝土抗壓試驗 134 4.1.2 鋼筋拉伸試驗 136 4.2 試體遲滯迴圈表現 139 4.3 裂縫模式 145 4.3.1 裂縫發展 145 4.3.2 裂縫密度 195 4.3.3 混凝土剝落面積 198 4.4 鋼筋應變計量測 201 4.5 NDI影像量測 229 第五章、分析與討論 241 5.1 強度預測檢核 241 5.1.1 撓曲強度檢核 241 5.1.2 剪力強度檢核 245 5.2 剪力牆力學行為之探討 247 5.2.1 TEASPA 側力位移曲線修正 247 5.2.2 剪力牆開口型式之影響 251 5.2.3 牆筋比之影響 254 5.2.4 AIJ2004損害程度評估 255 5.3 添加鋼纖維於剪力牆之影響與效益 259 5.3.1 鋼纖維取代牆筋之影響 259 5.3.2 鋼纖維取代開孔補牆筋之影響 262 5.3.3 添加鋼纖維對於剪力牆裂縫控制之效益 266 5.3.4 添加鋼纖維對於剪力牆剪力強度與破壞模式之影響 268 5.4 鋼纖維混凝土剪力牆建議設計流程 272 5.4.1 建議分析流程圖 272 5.4.2 細部配筋建議 275 第六章、結論與建議 278 6.1 結論 278 6.2 建議 280 參考文獻 281 | - |
dc.language.iso | zh_TW | - |
dc.title | 高強度鋼纖維混凝土開口剪力牆往復載重行為研究及建議設計流程 | zh_TW |
dc.title | The Study on Cyclic Behavior and Suggested Design Process of High Strength Steel Fiber Reinforced Concrete Walls with Opening | en |
dc.type | Thesis | - |
dc.date.schoolyear | 111-2 | - |
dc.description.degree | 碩士 | - |
dc.contributor.oralexamcommittee | 詹穎雯;鄭敏元 | zh_TW |
dc.contributor.oralexamcommittee | Yin-Wen Chan;Min-Yuan cheng | en |
dc.subject.keyword | 開口剪力牆,鋼纖維混凝土,橋接效應,構件韌性,軟化壓拉桿模型, | zh_TW |
dc.subject.keyword | shear walls with opening,steel fiber concrete,bridging action,toughness of member,softened strut-and-tie model, | en |
dc.relation.page | 286 | - |
dc.identifier.doi | 10.6342/NTU202302462 | - |
dc.rights.note | 同意授權(限校園內公開) | - |
dc.date.accepted | 2023-08-08 | - |
dc.contributor.author-college | 工學院 | - |
dc.contributor.author-dept | 土木工程學系 | - |
顯示於系所單位: | 土木工程學系 |
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