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首页> 外文期刊>Journal of Composites for Construction >Shear Buckling Resistance of GFRP Plate Girders
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Shear Buckling Resistance of GFRP Plate Girders

机译：GFRP板梁的抗剪屈曲性

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摘要

Thin webs of glass-fiber-reinforced polymer (GFRP) girders are sensitive to shear buckling, which can be considered an in-plane biaxial compression-tension buckling problem, according to the rotated stress field theory. An extensive experimental study was performed, which shows that an increasing transverse tension load significantly increases the buckling and ultimate loads caused by a decrease in the initial imperfections and additional stabilizing effects. The stacking sequence also greatly influenced the buckling behavior. Higher bending stiffness in the compression direction increased the buckling and ultimate loads, while higher bending stiffness in the tension direction changed the buckling mode shape. The general solution obtained using the Fok model accurately modeled the experimental results, while the simplified solution (modified Southwell method) provided accurate results only at higher tension loads.
机译：根据旋转应力场理论，玻璃纤维增​​强聚合物（GFRP）大梁的薄网对剪切屈曲敏感，可以将其视为面内双轴压缩-拉伸屈曲问题。进行了广泛的实验研究，结果表明，增加的横向张力载荷会显着增加屈曲和最终载荷，这些载荷是由初始缺陷的减少和附加的稳定作用引起的。堆叠顺序也极大地影响了屈曲行为。压缩方向上较高的弯曲刚度会增加屈曲和极限载荷，而拉伸方向上较高的弯曲刚度会改变屈曲模式的形状。使用Fok模型获得的一般解决方案可以对实验结果进行准确建模，而简化解决方案（改进的Southwell方法）只能在较高的拉伸载荷下提供准确的结果。

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