钢板与轻骨料混凝土组合梁滑移性能研究

Research on the interface slip of the steel plate and light aggregate concrete composite beams

在钢板与轻骨料混凝土组合梁中,钢板与轻骨料混凝土的交接面必产生相对滑移,这种滑移是影响组合梁受力性能的一个重要因素,可降低组合梁的承载力,增加组合梁的变形.通过5根钢板与轻骨料混凝土组合梁的试验研究,分析了钢板与轻骨料混凝土组合梁的交接面滑移性能,利用弹性理论,建立其交接面相对滑移微分方程,得到不同工况下的钢板与轻骨料混凝土组合梁滑移计算公式,并通过试验对其进行验证,理论计算结果与试验结果吻合良好.

The interface slip of the composite beams on the steel plate and light aggregate concrete is an important factor in affecting its working behavior.It can reduce the bearing capacity and increase the deformation of composite beam.Experimental results were reported in the literature on the interface slip behavior of the composite beams on the steel plate and light aggregate concrete analyzed by the experimental research.The differential equation of the interface slip is established,and the calculating formula of the interface slip is obtained by theoretical analysis.A good agreement is obtained between the calculating results and the experimental results.