压区粘钢加固梁受弯承载力分析

Analysis of the Flexural Capacity of Steel-bonded Reinforcement in Compressive Zone for Concrete Beams

根据压区粘钢梁的受力机理,推导出压区粘钢梁在四种破坏情况下的极限受弯承载力及界限破坏时的界限受弯承载力的计算公式和加固钢板高度公式.将理论计算值与压区粘钢梁的试验数据进行了对比,分析了所推导公式出现计算误差的原因,并提出了改进的方法.

According to the stress mechanics of the steel-bonded reinforced beams which are strengthened in compressive zone, the formulas of defining the ultimate flexural capacity of the failure modes, the critical flexural capacity and the critical strengthened height of the steel plate are suggested. The results are compared with the test results of steel-slab-bonded reinforced beams. Finally the deviation is analyzed and the modified method is presented.