型钢再生混凝土梁的抗弯性能试验研究

为了充分了解型钢再生混凝土梁的破坏特征,对4组型钢再生混凝土梁进行抗弯静载试验,了解型钢再生混凝土梁从开始加载直至破坏各个阶段的受力特点和变形特征,分析不同粗骨料取代率和钢筋配箍率对其受力性能的影响。研究表明,取代率不同对型钢再生混凝土梁的极限承载力的影响甚微,配箍率对型钢混凝土梁的裂缝间距及裂缝发展有一定影响,型钢再生混凝土梁截面基本符合平截面假定。

Test research on bending performance of steel-recycled concrete beam

In order to understand fully the failure mode of steel-recycled concrete beam, four steel-recycled concrete beams were tested on their bending performance. Through the test, the mechanical characteristics and deformation mode of steel-recycled concrete beams from the starting loading until to damage were completely recognized. The effect of different coarse aggregate substitution rate and reinforced stirrup on its mechanical features were also analyzed. The results show that different coarse aggregate substitution rate have little effect on the ultimate strength of steel-recycled concrete beam. The stirrup ratio have certain influence on the crack distance and development of beam. The?horizontal?section?assumption is feasible to the Steel-recycled concrete beam. The research conclusions can be a help to relevant study and engineering application.