| Experimental Study of RC Beams Strengthened with CFRP Sheets Under Sustaining Loads |
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| 作者姓名： | WANG Wenwei LI Guo |
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| 作者单位： | [1]Transportation College, Southeast University, Nanjing 210096, China [2]Chengxian College, Southeast University, Nanjing 210096, China |
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| 摘 要： | Seven reinforced concrete （ RC ） beams strengthened in flexure using carbon fiber reinforced polymer （CFRP） sheets subjected to different sustaining loads were tested. The effects of initial load and load history on the ultimate strength of strengthened RC beams were examined by externally bonded CFRP sheets. The main experimental parameters included different levels of sustaining load at the time of strengthening, and load history. Experimental results show that sustaining load levels at the time of strengthening have important influences on the ultimate strength of strengthened RC beams. If the initial load is the same, the ultimate strength of RC beams strengthened with CFRP sheets is almost the same regardless of load history at the time of strengthening.
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| 关 键 词： | 钢筋混凝土柱 碳纤维增强聚合体 加固机理 连续负荷 |
| 收稿时间： | 2005-05-12 |
| 修稿时间： | 2006-06-05 |
Experimental study of RC beams strengthened with CFRP sheets under sustaining loads |
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| WANG Wenwei LI Guo.Experimental Study of RC Beams Strengthened with CFRP Sheets Under Sustaining Loads[J].Journal of Wuhan University of Technology. Materials Science Edition,2006,21(3):82-85. |
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| Authors: | Wang Wenwei Ph D Li Guo |
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| Affiliation: | (1) Transportation College, Southeast University, 210096 Nanjing, China;(2) Chengxian College, Southeast University, 210096 Nanjing, China |
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| Abstract: | Seven reinforced concrete (RC) beams strengthened in flexure using carbon fiber reinforced polymer (CFRP) sheets subjected to different sustaining loads were tested. The effects of initial load and load history on the ultimate strength of strengthened RC beams were examined by externally bonded CFRP sheets. The main experimental parameters included different levels of sustaining load at the time of strengthening, and load history. Experimental results show that sustaining load levels at the time of strengthening have important influences on the ultimate strength of strengthened RC beams. If the initial load is the same, the ultimate strength of RC beams strengthened with CFRP sheets is almost the same regardless of load history at the time of strengthening. |
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| Keywords: | CFRP RC beams sustaining load experimental study |
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