钢板与轻骨料混凝土组合梁试验研究

Experimental Research of Steel Plate and Light Aggregate Concrete Composite Beams

通过钢板与轻骨料混凝土组合梁的试验,研究影响其抗弯及变形性能的主要因素,详细地分析了其变形性能,建立其抗弯承载力计算公式,得到其荷载 变形关系曲线·考虑钢板与混凝土组合梁本身结构及受力性能的复杂性,以数值积分方法为基础,考虑材料非线性,提出了一个钢板与混凝土组合梁从加载直至破坏的全过程非线性分析模式,编制计算程序,进一步明确钢板与轻骨料混凝土组合梁不同受力阶段的工作特性,得到其弯矩与曲率、荷载与变形关系曲线,计算结果与试验结果对比,二者吻合良好·

?The influence factors on the bending strength and The deformation of steel plate and light aggregate concrete composite beams were investigated.The theoretical calculating formulas of bending strength on steel plate and light aggregate concrete composite beams were proposed. Based on nonlinear fullrange analysis of the beams, the working performance of the beams was further established on different working stage. The mode provides an efficient means of theoretic analysis in studying nonlinear design method for the beams. On the basis of integration of finite element, a nonlinear fullrange analytical mode on the beams is presented. The program of calculating on steel plate and light aggregate concrete beams is suggested. The cure line of the momentcurvature and the loaddeformation are given out. A good agreement is obtained between the calculating results and the experimental results.