摘要
通过对5根玄武岩纤维增强材料(BFRP)筋混凝土梁的受弯性能试验,研究BFRP筋配筋率和混凝土强度对开裂弯矩的影响规律。基于普通钢筋混凝土梁开裂弯矩计算方法,结合混凝土受拉应力-应变关系,给出截面抵抗矩塑性影响系数关于配筋率和混凝土强度的关系曲线,建立BFRP筋混凝土梁开裂弯矩的计算模型。并用试验数据验证建议计算模型的正确性,结果表明:建议计算模型能有效预测BFRP筋混凝土梁的开裂弯矩。
To study the influence rule of reinforcement ratio of BFRP bars and concrete strength on cracking moment, the experiments on flexural property of 5 concrete beams reinforced with BFRP bars Were carried out. Based on the calculation method for cracking moment of RC beams, combined with tensile-strain relationship of concrete, the curve of plastic influence coefficient of sectional resistance moment which based on reinforcement ratio and concrete strength was gained, and the calculation model for cracking moment of concrete beams reinforced with BFRP bars was established finally. Then the data of cracking moment between the proposed calculation model and the test were compared and the results showed that the proposed calculation model could predict the cracking moment of concrete beams reinforced with BFRP bars effectively.
出处
《工业建筑》
CSCD
北大核心
2015年第9期72-75,85,共5页
Industrial Construction
基金
四川省教育厅科研基金项目(15ZB0112)
绵阳市科技局科技攻关项目(14G-03-8)
四川省科技创新苗子工程资助项目(2015103)
