型钢轻骨料混凝土梁正截面受弯裂缝实验

Experiment crack width of steel reinforced light aggregate concrete beam on normal section

为有效控制型钢轻骨料混凝土构件的裂缝宽度,采用跨中集中荷载的加载方式,进行型钢轻骨料混凝土梁开裂实验,分析裂缝宽度与荷载的关系,利用最小二乘法,得到型钢轻骨料混凝土梁的正截面受弯最大裂缝宽度计算公式。验算结果表明,计算值与实测数据符合较好。采用该公式计算最大裂缝宽度是可行的。

Aimed at effectively controlling the width of cracks in concrete structures with formed steel light aggregate, this paper describes the experiment focus cross-load on the middle of the concrete beam according to the experimental results and the theoretical analysis. The experiment involves using least-squares method to develop the calculation formula of the maximum crack width of the cross-section bending of the concrete beam with formed steel light aggregate. The checking results show that the calculated values consist with the measured data and the calculation formula is feasible.