腹板厚度不足、竖向有效预应力不足、抗剪钢筋配置不足和超载超流是预应力混凝土连续箱梁桥腹板产生斜向裂缝的主要原因,阐述了粘贴钢板条、粘贴碳纤维板/布、腹板加厚三种加固方法,并以某桥为工程背景通过方案比选确定腹板加厚为最优方案,并对腹板加厚加固施工要点及注意事项进行阐述,为其他类似工程提供参考。 The lack of web thickness, insufficient effective vertical prestressing, inadequate configuration of shear reinforcement and overloading flow are the main causes of diagonal cracks in the web of prestressed concrete continuous box girder bridges. , Web thickening three kinds of reinforcement methods, and to a bridge as the background of the project through the program to determine the optimal choice of web thickening program, and web thickening reinforcement construction points and precautions are described for other similar projects for reference.