不同配筋方式开孔梁抗剪性能试验研究

文章通过四根矩形开孔梁和一根实腹梁的对比试验,观察了在梁的弯剪区段开定位孔的情况下配置不同方式补强钢筋的开孔梁裂缝的出现、发展和最终破坏形态。通过测试钢筋及混凝土试件表面的应变,进行分析研究,得出可提高混凝土开孔梁抗剪性能的补强筋的配筋方式。

An Experimental Research on the Shear Performance of Different Reinforced Concrete Beams with Large Openings

This paper reports on a test in which four concrete beams with large rectangular openings in fixed places inside the flexu-ral - shear section were contrasted in operation with an ordinary beam in respect of their differences in behavior. Observed were the appearance and evolution of the cracks, and the final modality of failure in the beams with different reinforce bars put in the same cross section. The strains of the bars and concrete were measured. The analysis in the paper results in the attainment of the proper style of bars capable of improving the shear strength of the concert beams in question.