摘要
为研究组合结构桥梁中开孔板连接件的相对滑移机理,以开孔板厚度、孔中钢筋直径、开孔板孔径为变化参数,进行了21个开孔板连接件抗剪性能模型试验。通过理论分析与试验结果比较,揭示了开孔板连接件相对滑移量主要由孔中钢筋剪切变形量、孔中混凝土压缩变形量和剪切变形量三部分组成,以及抗剪承载力对应相对滑移量随板厚增加而减小,随孔径、孔中钢筋直径增加而增大的滑移机理。
To derive the mechanism of the relative slip of a perfobond connector in a composite bridge, 21 model tests were carried out to study the effects of different parameters on the relative slip of a perfobond connector. The parameters were the thickness of a plate, the diameter of a hole, and the di- ameter of a rebar. The studies of slip mechanism show that the slip of a perfobond connector mainly con- sists of three parts, including the shear deformation of a rebar in a hole, the shear deformation and com- pressive deformation of the concrete in a hole. The studies also show that the slip corresponding to the ul- timate load of a perfobond connector decreases with the increment of the thickness of a plate, while this slip increases with the increment of the diameter of a hole and the diameter of a rebar.
出处
《低温建筑技术》
2013年第2期37-39,共3页
Low Temperature Architecture Technology
