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在地震作用下，钢筋混凝土框架梁纵向钢筋的粘结滑移，加剧了结构的变形，因而对滑移及其引起的变形的研究成为弯折钢筋锚固设计的关键。文章通过对足尺框架边节点试件梁纵向钢筋滑移的量测，发现滑移随梁端位移的增加而突增，因纵筋直径的增加而增加，且反复荷载作用下较重复荷载作用滑移值大。通过对因滑移引起的梁端位移的分析计算认为，随着钢筋直径的增加，因滑移引起的位移及与总位移的比值越来越大；随μ值的增加，滑移引起的位移增加，但与总位移的比值不再继续增加。
Under the action of earthquakes, the bond-slippage of the longitudinal reinforcement of reinforced concrete frame beams aggravates the deformation of the structure. Therefore, the study of the slip and its induced deformation has become the key to the design of bent steel anchors. In this paper, by measuring the longitudinal steel bar slip of the sample beam of the full-scale frame edge node, it is found that the slip increases with the increase of the displacement of the beam end, increases with the increase of the length of the longitudinal bar, and is more effective than the repeated load under repeated loading. Large slip value. Through analysis and calculation of the beam end displacement caused by slip, it is believed that as the diameter of the steel bar increases, the ratio of the displacement due to slip and the total displacement becomes larger and larger; with the increase of μ value, slip-induced displacement Increase, but the ratio to the total displacement no longer increases.