CFRP板加固H型钢梁抗弯承载力计算方法

CFRP Plate Reinforcement H-Beam Bending Bearing Capacity Calculation Method

为进一步研究碳纤维增强复合材料(CFRP)板加固H型钢梁的抗弯承载力计算方法,在现有的理论公式推导基础上,以H型钢受拉翼缘达到屈服强度为标准,采用叠加法对加固钢梁在弹性工作阶段的屈服弯矩进行推导,得到CFRP板加固H型钢梁抗弯承载力计算公式。将已有文献的试验数据与推导的公式计算值进行对比分析的结果表明,公式计算结果与试验结果基本吻合。本文推导的计算公式可以为非预应力CFRP材料加固钢梁抗弯承载力计算提供一定的参考。

In order to further study the calculation method of bending bearing capacity of H-beam reinforced with CFRP plate,on the basis of the existing theoretical formula derivation,the yield bending moment of the reinforced steel beam in the elastic working stage was derived by the superposition method,and the calculation formula of the flexural bearing capacity of the H-beam reinforced H-beam steel beam was proposed based on the yield strength of the tensile flange of H-beam steel,and the test data and theoretical formula calculation value of the existing literature were compared and analyzed.The results show that the formula calculation results are in good agreement with the experimental results,and the derived calculation formula can provide a certain reference for the calculation of the bending bearing capacity of steel beams reinforced with non-prestressed CFRP materials.