粘钢加固钢筋混凝土梁的受力机理

本文通过对四根粘钢加固钢筋混凝土梁的单调加载静力试验,测得了粘钢中固梁的纵向受力钢筋,受拉粘钢底板,粘钢侧板,粘钢箍板及受压区混凝土的应变和梁的挠度等数据。并通过理论分析计算了粘钢加固梁的正截面承载力,斜截面承载力及刚度,挠度等,通过试验和理论计算,探讨了粘钢加固梁的受力机理,分析了有效的加固方案,并对炽钢另固钢筋混凝土梁的合理设计提出了一些建议。

Behavior of R. C. Beam Strengthened with Glued Steel Plate

This paper describes the tests of 4 R. C. beams glued with steel plate. Data of strain of longitudinal bars, glued bottom steel plate in tension, glued web plate and glued steel "stirrup" plate of R. C. beams and strain of concrete in compression area, and the deflection of beams are experimentally obtained. Bearing strength of vertical section and inclined section and stiffness and deflection of beams are calculated through theoretical analysis. On the basis of test and calculation, the bearing behavior of glued-steel-reinforced beams are studied and effective scheme of reinforcement are analyzed. Suggestion regarding reasonable design of glued-steel-reinforced R. C. beam have been put forward.