摘要
根据钢筋混凝土梁的正截面破坏的作用机理,分析了不同卸荷条件下二次受力对粘钢加固混凝土梁界限相对受压区高度ξb的影响,推导出了再受力情况下(即不完全卸载与完全卸载条件下)ξb公式的差异。指出实际应用时应根据实际卸荷情况,考虑对ξb的影响决定粘钢量。
According to the working mechanism of the normal section rupture of reinforced concrete beams, the effects of reforce on the height of the limited pressurized region of steel-strengthened concrete beams under different unloading conditions （that is, under both the incompletely unloading and completely unloading conditions） are analyzed in the paper, with the differences in the height formulae inferred. It is also pointed out that in practical application, how much strengthening steel should be used will be decided according to the specific unloading conditions, with the effects of reforce on taken into account. It may serve as a useful reference for similar projects.
出处
《国防交通工程与技术》
2008年第3期36-38,共3页
Traffic Engineering and Technology for National Defence
关键词
钢筋混凝土梁
粘钢加固
二次受力
卸载条件
reinforced concrete beam
steel-strengthened
reforce
unloading condition
