中文摘要：

采用数值试验研究了CFRP板加固钢筋混凝土梁中不均匀胶层的应力及加固界面应力．被加固梁界面上设置缺口改变胶层的局部厚度，根据缺口的深度、宽度、位置建立6种分析工况．研究表明，缺口距离CFRP板端部较近时，界面峰值应力会高于无缺口工况，缺口远离CFRP板端部位置时，峰值界面应力几乎不受影响；缺口距离CFRP板端部为CFRP板长的0．83％和1．25％时，峰值界面剪应力和正应力分别达到最大值；当缺口的长度或深度增大时，峰值界面剪应力和界面正应力均增大，界面应力对于缺口深度更敏感；在远离CFRP板端部区域，胶层中的应力沿其厚度方向均匀分布；当缺口出现在CFRP板端部附近时，CFRP板端部胶层中的应力沿厚度方向变化更大且应力在缺口区域内分布更加不均匀．

英文摘要：

Numerical modeling method was adopted to investigate the stress of uneven adhesive layer and the interracial stresses of the beam strengthened by CFRP plate. The notch was set on the interface of strengthened beam to change the local thickness of adhesive layer. Six cases were set up according to the depth, width and location of the notch. The analysis results indicate that the peak interracial stresses are much greater than beam without the notch when the notch is located at a short distance from the plate end. When the notch is far from the plate end, the peak interracial stresses are barely been influenced. The peak interracial shear and normal stresses reach the maximum values when the notch is located at around 0.83% and 1.25% of the FRP length from the plate end, respectively. With the increase of the length or depth of the notch, interracial shear and normal stresses increase simultaneously. Both interracial shear and normal stresses are more sensitive to the change of depth than change of length. The stress distribution of adhesive layer along the thickness-wise direction is uniform except the CFRP plate-end area. When the notch is located at the plate-end area, the notch leads to a stronger variation of stresses of adhesive layer at the plate-end area and also a more non-uniform stress distribution within the notch-area along the thicknesswise direction.