| 研究生: |
蔡明諺 Cai, Ming-Yan |
|---|---|
| 論文名稱: |
鋼筋混凝土梁柱接頭複合材料補強行為之數值模擬 Numerical model on RC beam-column joint strengthening with carbon fiber reinforced polymer(CFRP) |
| 指導教授: |
邱耀正
Chiou, Yaw-Jeng |
| 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: | 136 |
| 中文關鍵詞: | 結構補強 、有限元素 、梁柱接頭 、碳纖維 |
| 外文關鍵詞: | ABAQUS, Strengthening, CFRP, FE, Beam-Column Joints |
| 相關次數: | 點閱:128 下載:4 |
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本論文主要為研究以複合材料補強於鋼筋混凝土梁柱接頭之數值模擬分析。利用有限元素(Finite Element,簡稱FE)-ABAQUS分析軟體模擬三維梁柱接頭與以CFRP(Carbon Fiber Reinforced Polymers)補強於RC (Reinforced Concrete)梁柱接頭構件之破壞行為分析。
本文探討之重點為分別對內部梁柱接頭及外部梁柱接頭模擬其破壞包絡線,再給予當軸壓力改變或凝土抗壓強度改變等兩項變數進行模擬且探討其行為變化,並對於潘俊佑【28】之複合材料補強實驗加以模擬,探討以CFRP貼覆於RC梁柱接頭的補強行為。
文中對於鋼筋的模擬分別以三種方式模擬。首先,單純考慮主筋效應的模擬結果較實驗曲線保守,但收斂容易,因此能快速掌握試體之破壞包絡線;倘若加建箍筋模型進行內嵌,其包絡線稍微提升,但也略為保守,建立箍筋模型所耗時間與模擬結果不成正比;若箍筋圍束效應改以Kent and Park【13】提出含箍筋圍束之經驗公式替代,則分析時間所耗最多,且收斂度不佳,但其破壞包絡線最接近於實驗曲線。
本文對於模擬RC梁柱接頭之行為,若欲短時間內掌握試體之破壞包絡線趨勢,建議採用以純主筋方式模擬;若在箍筋圍束部分之組成律採用Kent and Park【13】提出含箍筋圍束之經驗公式,其模擬之結果最符實驗行為,且由分析結果-塑性應變圖中應變集中的區域了解試體張裂的行為。
This study investigates a numerical model on the Reinforced Concrete(RC) beam-column joint strengthened by the carbon fiber reinforced polymer (CFRP). At the beginning, a three-dimentional(3-D) nonlinear finite element analysis is used to simulate the behavior of interior and exterior beam-column joints without CFRP. There are six experiments to perform the the parametric studies including the concrete compressive strength, axial load, and the simulation of steel. Then, a 3-D nonlinear finite element analysis is used to investigate the behavior of interior beam-column joints with CFRP. Finally, the numerical results demonstrate that the concrete compressive strength make an important role in beam-column joints. In this research, a pre-rehabilitation way for using CFRP is suggested. A numerical model on RC beam-column joint strengthened by CFRP is also proposed.
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