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通过对8个钢板局部屈曲受压试件进行轴压及偏压试验,观测了梁侧锚固钢板加固钢筋混凝土梁(BSP梁)中梁侧锚固钢板在不均匀压应力场下的局部屈曲模态,研究了钢板屈曲应力场分布、屈曲承载力、竖向变形能力及屈曲起拱高度随不同螺栓间距、钢板厚度及纵横向加劲肋配置方式的改变规律.试验结果表明:梁侧锚固钢板的屈曲承载力随螺栓间距的减小及钢板厚度的增加而增大,采用减小螺栓间距为更经济有效的方法;配置纵向加劲肋能更有效地改善钢板的屈曲承载力,改善效果随加劲肋截面尺寸的增大而提高;在纵向加劲肋的基础上再配置横向加劲肋对改善抗屈曲性能无明显效果.
The local buckling modal of the anchored steel plate in the beam side of the girder strengthened with reinforced concrete beam (BSP beam) of the beam side is observed under axial compressive stress and partial pressure test of eight local buckling compressive specimens. , The buckling stress field distribution, buckling bearing capacity, vertical deformation capacity and buckling arch height with different bolt spacing, plate thickness and longitudinal and transverse stiffener configuration were studied.The results show that the buckling The bearing capacity increases with the decrease of the bolt spacing and the increase of the thickness of the steel plate. It is more economical and effective to reduce the bolt spacing by using the longitudinal stiffener. The buckling capacity of the steel plate can be more effectively improved with the improvement of the effect. Size increase and increase; in the longitudinal stiffener based on the allocation of transverse stiffeners to improve the anti-buckling performance no significant effect.