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研究生: 楊毅凡
Yang, Yi-Fang
論文名稱: 鋼筋混凝土梁柱複合構件承受高溫之行為研究-梁柱接頭之承力行為
Behavior of Reinforced Concrete Beam-Column Sub-assemblage Subjected to Elevated Temperature-Behavior of Beam-Column Joint
指導教授: 方一匡
Fang, I-K
學位類別: 碩士
Master
系所名稱: 工學院 - 土木工程學系
Department of Civil Engineering
論文出版年: 2007
畢業學年度: 95
語文別: 中文
論文頁數: 56
中文關鍵詞: 轉動角剪力值
外文關鍵詞: rotation, shear strength
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  • 本研究旨在探討鋼筋混凝土梁柱複合構件中之接頭在高溫中及高溫後之承力行為。
    試驗工作共測試4個全尺寸梁柱複合構件試體,其中兩個為普通混凝土另兩個為自充填混凝土,在常溫中測試兩個試體,高溫中測試兩個試體。
    根據測試結果:高溫試驗中,普通混凝土試體(NC)與自充填混凝土試體(SCC)的梁柱接頭在受到柱軸壓力下的垂直位移約為4mm,轉動角約為0.2度。高溫試驗中,NC試體的接頭在使用載重下的垂直位移約為常溫試驗中的4~6倍,轉動角約為7倍。在SCC試體的接頭,高溫測試3小時候接頭內部中心之溫度約為80。C,靠近梁端中心約5cm處的溫度約為100。C,接頭角落距離最外緣約6cm處的溫度約為400。C在NC1試體中根據公式計算之最大容許剪力值為2480kN,SCC1試體之最大容許剪力值為2716kN皆遠大於實驗值所計算出的接頭剪力。

    The purpose of this research is to study the behavior of joint in a reinforced concrete beam-column sub-assemblage subjected to the effect of elevated temperature.
    In the experimental work, 4 full scale specimens of reinforced concrete beam-column sub-assemblage were tested, including 2 ordinary (NC) and 2 self compacting (SCC) concrete specimens. Two of the form specimens were tested in room temperature and the other two were tested in the elevated temperature, the displacement and rotation of joint were measured using the instruments installed at both ends of spandrel beam.
    The primary finding according to the test results are as follows:
    1. The vertical displacement of joint of SCC and NC specimens in room temperature was about 4mm, and the rotation was about 0.2 degree.
    2. The vertical displacement of NC joint tested in service lead and the elevated temperature was about 4~6 times of that tested in room temperature, where as the rotation in elevated temperature was about 7 times more.
    3. For SCC joint subjected to three hours of elevated temperature test the temperature at it’s center was about 80℃, at the location 5cm near the center of longitudinal beam was about 100℃, and at the location 6cm near the corner was about 400℃
    4. The shear strength of joint was also studied in which the maximum allowable shear strength based on the prediction of ACT318 Code was 2480kN and 2716kN for NC1 and SCC1 specimen, respectively.

    緒論 1-1 研究背景與目的.......................................1 1-2 研究方法.............................................1 第二章 文獻回顧 2-1 前言.................................................2 2-2 文獻【1】............................................2 2-3 文獻【2】............................................3 2-4 文獻【3】............................................3 2-5 文獻【4】............................................4 第三章 實驗規劃 3-1 實尺寸7層樓住宅建築結構的設計.......................5 3-1-1 建築物載重及ETABS data 輸入....................5 3-1-2 建築物地震力計算...............................6 3-2 試體介紹與加載流程...................................7 3-2-1 試體尺寸與分類.................................7 3-2-2 加載流程簡介...................................8 第四章 結果與討論 4-1 NC1普通混凝土梁柱複合構件之承力行為.................10 4-1-1 加載流程......................................10 4-1-2 邊梁的垂直位移................................10 4-1-3 邊梁的轉動角..................................12 4-1-4 梁末端反力與梁柱接頭之受力....................15 4-2 SCC1自充填混凝土梁柱複合構件之承力行為..............17 4-2-1加載流程.......................................17 4-2-2 邊梁的垂直位移................................17 4-2-3 邊梁的轉動角..................................18 4-2-4梁末端反力與梁柱接頭之受力.....................22 4-3 普通混凝土梁柱複合構件在高溫影響下的行為............23 4-3-1 初始加載......................................23 4-3-2 邊梁位移在溫度影響下之變化....................23 4-3-3邊梁轉動角在溫度影響下之變化...................25 4-3-4 梁末端反力在高溫影響下的變化..................25 4-3-5 高溫後殘餘強度試驗之加載流程..................27 4-3-6 殘餘強度試驗中的邊梁位移......................27 4-3-7 殘餘強度試驗中的邊梁轉動......................28 4-3-8 殘餘強度試驗中的梁末端反力....................30 4-4 自充填混凝土梁柱複合構件在高溫影響下的行為..........31 4-4-1 初始加載......................................31 4-4-2 邊梁位移在溫度影響下之變化....................32 4-4-3邊梁轉動角在溫度影響下之變化...................33 4-4-4 梁末端反力在高溫影響下的變化..................36 4-4-5 高溫後殘餘強度試驗之加載流程..................37 4-4-6 殘餘強度試驗中的邊梁位移......................38 4-4-7 殘餘強度試驗中的邊梁轉動......................39 4-4-8 殘餘強度試驗中的梁末端反力....................41 第五章 結論 5-1 結論................................................43 參考文獻................................................44 表目錄 表3-1 常溫實驗試體受力之流程.............................8 表3-2 高溫後殘餘強度實驗之加載流程.......................9 表4-1 常溫的梁柱加載情況.............................10,14 表4-2 常溫下邊梁的力與位移之關係........................11 表4-3 邊梁於加載過程中的轉動角度........................12 表4-4 爐外梁末端之反力量測值與理論分析值................15 表4-5 常溫的梁柱加載情況.............................17,21 表4-6 常溫下邊梁的力與位移之關係........................17 表4-7 邊梁之轉動角......................................19 表4-8 梁末端反力量測值與理論分析值......................22 表4-9 高溫後殘餘強度試驗之加載流程......................27 表4-10 殘餘強度試驗中之邊梁位移量測值...................27 表4-11 殘餘強度試驗中的邊梁轉動量測值...................28 表4-12 殘餘強度試驗中梁末端的反力量測值.................30 表4-13 高溫後殘餘強度試驗之加載流程.....................37 表4-14 殘餘強度試驗中之邊梁位移量測值...................38 表4-15 殘餘強度試驗中的邊梁轉動量測值...................39 表4-12 殘餘強度試驗中梁末端的反力量測值.................41 圖目錄 圖3-1 房屋結構俯視圖.....................................5 圖4-1 加載過程中邊梁的位移關係圖........................11 圖4-2 柱的軸壓與邊梁轉動角的關係圖......................13 圖4-3 邊梁在加載過程之轉動示意圖(NC1).................14 圖4-4 梁末端反力量測值與分析值之關係圖..................16 圖4-5 柱的軸壓與邊梁位移的關係圖........................18 圖4-6-a 加載過程中邊梁的轉動角度關係圖..................19 圖4-6-b NC1與SCC1轉動角度之比較........................20 圖4-7 邊梁在加載過程之轉動示意圖(SCC1)..................21 圖4-8 梁末端反力量測值與分析值之關係圖..................22 圖4-9 邊梁位移在溫度影響下與時間之關係圖................24 圖4-10 邊梁轉動角在溫度影響下與時間之關係圖.............25 圖4-11-a 高溫影響下梁末端反力與時間之關係圖.............26 圖4-11-b 高溫影響下梁末端實際反力與時間之關係圖.........26 圖4-12-a In-plane 邊梁轉動角與加載之關係圖..............28 圖4-12-b Out of plane邊梁轉動角與加載之關係圖...........29 圖4-13 梁末端反力與加載之關係圖.........................30 圖4-14 邊梁位移在溫度影響下與時間之關係圖...............32 圖4-15 溫度量測點斷面分佈圖.............................33 圖4-16-a 量測點CC3-1溫度與時間之關係圖.................33 圖4-16-b 量測點CC2-4與CC2-3溫度與時間之關係圖..........34 圖4-16-c 量測點CC4-6與CC4-5與CC4-3溫度與時間之關係圖34 圖4-16-d 量測點CC4-4與CC4-3與CC4-2溫度與時間之關係圖35 圖4-17-a 高溫影響下梁末端反力與時間之關係圖.............36 圖4-17-b 高溫影響下梁末端實際反力與時間之關係圖.........36 圖4-18 殘餘強度實驗中邊梁位移與加載之關係圖.............38 圖4-19 邊梁轉動角與加載之關係圖.........................40 圖4-20 梁末端反力與加載之關係圖.........................41 符號表 θ:面內向的邊梁轉動角(逆時鐘為正) ψ:面外向的邊梁轉動角(逆時鐘為正) Aj:梁柱接頭之有效斷面積 fc’:混凝土圓柱試體之抗壓強度 R:爐外梁末端支承之反力

    1. Lie,T.T., and Celikkol ,B., “Method to calculate the Fire Resistance of Circular Reinforced Concrete Columns,” Materials Journal, ACI, January-February 1991, pp. 84-91

    2. Tan,K.H., and Tao,Y., ”Fire Resistance of Reinforced Concrete Columns Subjected to 1-, 2-, 3-Face Heating,”Journal of Structural Engineering, ASCE, November 2004, pp. 1820-1828

    3. Edwards, W. T. , and Gamble, W. L., “Strength of Grade 60 Reinforcing Bars after Exposure to Fire Temperatures,” Concrete International, ACI, October 1986, pp. 17-19.

    4. 中國土木水利工程學會, ”混凝土工程設計規範與解說(土木401-92),”pp.15-14

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