| CFRP筋复合增强板加固石梁受力性能有限元分析 |
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| 引用本文： | 邱锦华,苗伟,郭子雄,叶勇. CFRP筋复合增强板加固石梁受力性能有限元分析[J]. 华侨大学学报(自然科学版), 2022, 0(4): 432-439. DOI: 10.11830/ISSN.1000-5013.202201033 |
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| 作者姓名： | 邱锦华 苗伟 郭子雄 叶勇 |
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| 作者单位： | 1. 华侨大学 土木工程学院, 福建 厦门 361021;2. 华侨大学 福建省结构工程与防灾重点实验室, 福建 厦门 361021 |
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| 基金项目： | 国家自然科学基金资助项目（52178485）；;福建省科技计划项目（2020Y4011）； |
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| 摘 要： | 采用有限元程序ABAQUS,对碳纤维增强复合材料(CFRP)筋复合增强板加固石梁的受弯性能进行数值建模.利用已有的荷载-挠度曲线、荷载-CFRP筋应变曲线数据对建立的模型进行可靠性验证,结果表明:有限元模拟结果和试验结果吻合良好.在此基础上,对加固后的石梁进行受力全过程截面应力分析,归纳得出荷载-变形特征曲线.基于平截面假定,提出采用CFRP筋复合增强板加固石梁的受弯承载力计算公式,计算得出的开裂弯矩与试验结果和有限元模拟结果吻合较好.
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| 关 键 词： | 石梁 加固 有限元模拟 CFRP筋 受弯性能 |
Finite Element Analysis of Flexural Behavior of Stone Beams Strengthened With CFRP-Reinforced Stone Sheets |
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| QIU Jinhua1,MIAO Wei1,GUO Zixiong1,' target="_blank" rel="external">2,YE Yong1,' target="_blank" rel="external">2. Finite Element Analysis of Flexural Behavior of Stone Beams Strengthened With CFRP-Reinforced Stone Sheets[J]. Journal of Huaqiao University(Natural Science), 2022, 0(4): 432-439. DOI: 10.11830/ISSN.1000-5013.202201033 |
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| Authors: | QIU Jinhua1,MIAO Wei1,GUO Zixiong1,' target=" _blank" rel=" external" >2,YE Yong1,' target=" _blank" rel=" external" >2 |
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| Affiliation: | 1. College of Civil Engineering, Huaqiao University, Xiamen 361021, China; 2. Key Laboratory for Structural Engineering and Disaster Prevention of Fujian Province, Huaqiao University, Xiamen 361021, China |
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| Abstract: | Using finite element program ABAQUS, the numerical modeling of flexural behavior of stone beams strengthened with prefabricated carbon fiber reinforced polymer(CFRP)-reinforced stone sheets is carried out. The reliability of the model is verified by the existing data of load-deflection curves and load-CFRP strain curves. The results show that: the finite element simulation results are in good agreement with the experimental results. On this basis, the cross-section stress analysis of the strengthened stone beam is carried out in the whole process, the load-deformation characteristic curve is summarized. Based on the plane section assumption, a formula calculating the flexural bearing capacity of stone beams strengthened with prefabricated CFRP-reinforced stone sheets is proposed. The calculated cracking moment is in good agreement with the experimental results and the finite element simulation results. |
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| Keywords: | stone beam strengthening finite element simulation CFRP bar flexural performance |
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