| CFRP加固焊接钢结构的疲劳性能试验研究 |
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| 引用本文： | 赵恩鹏,牛忠荣,胡宗军,程长征. CFRP加固焊接钢结构的疲劳性能试验研究[J]. 工业建筑, 2011, 0(Z1): 354-358 |
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| 作者姓名： | 赵恩鹏 牛忠荣 胡宗军 程长征 |
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| 作者单位： | 合肥工业大学土木与水利工程学院; |
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| 基金项目： | 安徽省自然科学基金(090414153,11040606Q38); 安徽省高等学校省级优秀青年人才基金项目(2009SQRZ009) |
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| 摘 要： | 由于焊缝自身的缺陷,导致大部分焊接钢结构是由于焊接接头的疲劳断裂而失效。碳纤维增强复合材料(CFRP)加固焊接钢结构应用研究较少,尤其是焊接构件加固之后的疲劳性能的试验和分析。通过试验和计算对比,定量分析对接焊Q345钢板在采用CFRP布加固前后的疲劳性能的改善,并基于BS7608标准,采用有限元软件ANSYS对CFRP布加固焊接Q345钢板进行受力分析,运用S-N曲线预估构件加固后的疲劳寿命。结果表明:CFRP布加固可有效增大焊接钢构件的疲劳寿命;合理修正S-N曲线后,可较准确的预估构件加固后的疲劳寿命。此次研究得到了较准确的结果,对焊接钢构件采用CFRP布加固后疲劳寿命的设计有参考意义。
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| 关 键 词： | 钢结构 试验 焊接 碳纤维复合材料 疲劳寿命 |
TESTING ANALYSIS OF FATIGUE DURABILITY OF WELDED STEEL STRUCTURE REINFORCED BY CFRP |
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| Zhao Enpeng Niu Zhongrong Hu Zongjun Cheng Changzheng. TESTING ANALYSIS OF FATIGUE DURABILITY OF WELDED STEEL STRUCTURE REINFORCED BY CFRP[J]. Industrial Construction, 2011, 0(Z1): 354-358 |
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| Authors: | Zhao Enpeng Niu Zhongrong Hu Zongjun Cheng Changzheng |
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| Affiliation: | Zhao Enpeng Niu Zhongrong Hu Zongjun Cheng Changzheng(School of Civil Engineering,Hefei University of Technology,Hefei 230009,China) |
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| Abstract: | Fatigue damage is one of the most important failure modes for welded steel structure,because of the faults of welding.There are a few applications and studies in reinforcing welded steel structure with carbon fiber reinforced polymer(CFRP),especially about the test of fatigue life.In this paper,the fatigue life of the steel plates of Q345 which are welded and reinforced by CFRP sheets is achieved by experimentation.The stress field of the same welded steel plate reinforced by CFRP sheet is analysed by FEM.B... |
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| Keywords: | steel structure test weld CFRP fatigue |
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