| 玄武岩纤维筋增强再生混凝土梁抗剪性能的试验研究 |
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| 引用本文： | 韩定杰,刘中宪,刘华新,张志金,彭长岭.玄武岩纤维筋增强再生混凝土梁抗剪性能的试验研究[J].玻璃钢/复合材料,2018(2):15-20. |
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| 作者姓名： | 韩定杰 刘中宪 刘华新 张志金 彭长岭 |
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| 作者单位： | 辽宁工业大学土木建筑工程学院,锦州,121001
天津市土木建筑结构防护与加固重点实验室,天津,300384 |
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| 基金项目： | 辽宁省自然科学基金，天津市土木建筑结构防护与加固重点实验室开放课题 |
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| 摘 要： | 为研究BFRP筋再生混凝土梁的受剪性能,对纵筋为BFRP筋的无腹筋和有腹筋梁的破坏形态,挠度变化,纵向受力钢筋、箍筋应变和极限承载力等受力性能进行了试验研究,并与同尺寸纵筋为钢筋的再生混凝土梁进行对比分析。结果表明:BFRP筋再生混凝土梁均发生剪切破坏,而同等配筋条件下的钢筋再生混凝土梁在配置箍筋后由剪切破坏变为弯曲破坏;箍筋对BFRP筋梁抗剪承载力的提高更显著;有腹筋的BFRP筋再生混凝土梁的延性较无腹筋梁更好;箍筋抗剪作用的发挥与梁剪切斜裂缝的位置、倾角相关。
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| 关 键 词： | 梁 玄武岩纤维筋 再生混凝土 箍筋 抗剪承载力 beams basalt fiber-reinforced polymer recycled aggregate concrete stirrups shear capacity |
EXPERIMENTAL STUDY ON SHEAR BEHAVIOR OF BFRP REINFORCED RAC BEAMS |
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| Abstract: | The shear performances are presented for recycled aggregate concrete (RAC) beams reinforced with basalt fiber-reinforced polymer (BFRP) bars.Four beams reinforced with BFRP bars with and without stirrups were constructed and tested.The failure modes,load-deflection,load-strain behavior of longitudinal reinforcement and stirrups,and shear capacity were discussed respectively.And,a comparative analysis was carried out with four steel bars reinforced RAC beams with the same size.It was observed that all the BFRP bars reinforced concrete beams failed in shear,but the steel bars reinforced RAC beams is changed from shear failure to flexural failure after being configured the stirrups.Stirrups on the improvement of BFRP bars reinforced beam shear capacity is more significant.The deformability of BFRP bars reinforced concrete beams with stirrups is better than that of beams without stirrups,and the shear resistance ance effect of the stirrups is related to the position and inclination of the shear cracks in the beam. |
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