在钢筋混凝土基材上植筋的拉拔试验研究

结构胶植筋的试验研究多在素混凝土上进行，而国内实际工程多在钢筋混凝土基材上进行，这种情况的传力机理和破坏形式存在明显的不同，在钢筋混凝土上植筋，在静力作用下锚固段钢筋应力从下向上随锚固深度减小钢筋应力逐步增大，粘结剪应力的最大值出现在钢筋刚进入屈服时，另外不同的结构胶对施工有着不同的要求。

THE RESEARCH ON THE DRAWING TEST OF PLANTING BARS IN THE REINFORCED CONCRETE

Most of the test of planting bars by structural glue are conducte d on the plain concrete.However the domestic practice are conducted on the reinf orced concrete.There are obvious differences in the force trans-mission and dama ge form.Planting bar on the reinforced concrete the stress of anchoring bar incr eases gradually from bottom to top with the decrease of anchorage depth by the s tatic force.The maximum value of binding shear stress appears when the bar just enters into the state of yielding.By the way there are different require-ments of construction to different structural glue.