一种新型钢-混凝土组合板承载力的试验研究

提出了一种新型的钢-混凝土组合板，并对43块不同参数的板件在施工阶段和使用阶段的工作性能进行了试验研究。分析了试件在两个阶段的荷载-变形关系、截面应变分布及裂缝发展规律等。试验结果表明：该组合板在施工阶段的应力和变形较小，模板稳定性艮好，基本处于弹性工作状态；在使用阶段其受力性能类似普通的钢筋混凝土受弯构件，但却具有更高的承载力和延性。应用数值方法计算了这种组合板的荷载一变形关系全过程曲线，理论计算结果与试验结果均吻合良好。

Experimental Studies of the Bearing Capability of a New Type of Steel-Concrete Composite Slab

A new kind of steel-concrete composite slab is proposed. Forty-three specimens of this kind of slab with different parameters have been studied. Their behaviors during construction and use are analyzed, including the load-defection relationship, the strain distribution and crack development, etc.. The test results show that in the construction period, the steel form has good stability with small strain and deflection, and that in the use period, the composite slab has a similar property to that of RC element under bending, but it has higher load resistance and better ductility. The complete load-deflection curve for the composite slab is also analyzed by using a numeric method. The theoretic calculation results are identical with the test results.