李佩勋  谢应鹏  赵瑜
    (冶金部建筑研究总院 北京 100088)

[提要]  通过拉拔试验，探讨了冷轧带肋钢筋(1 200MPa)破坏机理c-s曲线模式，确定了冷轧带肋钢筋(1 200MPa)粘结强度与砼强度、保护层厚度、锚固长度等主要因素的关系，并由试验结果推导出了临界锚固长度，为该级别冷轧带肋钢筋的工程应用提供了可靠的依据。
[关键词]  冷轧带肋钢筋 粘结锚固  临界锚固长度

The conditions of anchorage intensely affect bond-anchorage properties of Cold-Rolled Ribbed Wires and bars in concrete. The effects of concrete strength, thickness of concrete cover, anchorage length for bond-anchorage properties have been investigated on the basis of a lot of pull-out test. By way of experimental statistical regression, the critical anchorage length of the wires and bars has been proposed.
Keywords:  cold-rolled ribbed wires and bars; bond-anchorage; the critical anchorage length