钢与高强混凝土组合梁变形性能试验研究

通过钢与高强混凝土组合梁的试验研究 ,得到其荷载 挠度曲线 ,分析其变形性能·在荷载作用下 ,钢梁与混凝土板交接面处出现相对滑移 ,导致组合梁的承载力降低 ,刚度变小 ,变形加大 ,考虑交接面相对滑移对钢与高强混凝土组合梁的变形影响 ,利用弹性分析理论建立了钢与高强混凝土组合梁的变形微分方程 ,得到了跨中集中荷载、均布荷载及对称集中荷载作用下的钢与高强混凝土组合梁的变形计算公式 ,计算结果与试验结果对比 ,二者吻合良好

Deformation of Steel and High Strength Concrete Composite Beams During Loading

The load-deformation curve was investigated by experimented test on the steel high strength concrete composite beams. There is an interface slip between the steel and concrete beams during loading. The slip affect the limit load, the rigidity and the deformation.Based on the interface slip of the simply supported steel and concrete composite beams, the deformation differential equation of steel and concrete composite beams is established, the calculating formulas of the deformation are proposed for different loading cases by theoretical analysis. A good agreement is obtained between the calculating results and the experimental results.