建筑结构学报2017，Vol.38Issue(7)：137-145,9.DOI:10.14006/j.jzjgxb.2017.07.017
悬链线效应下钢筋与混凝土黏结锚固性能试验研究
Experimental study of bond-anchorage performance between steel bars and concrete under catenary action
摘要
Abstract
The bond failure between steel bars and concrete under the catenary action was studied,whether steel bars or bond is the earliest failure was investigated in the progressive collapse process of RC frame structures.The effects of changing anchorage length and the arrangement of reinforcement on the bond-anchorage performance were also studied.The steel bars were anchored in reinforced concrete column,and the steel bars formed the mechanical mechanism of catenary which occured when the end of beam in RC frame structure was damaged but the steel bars was not broken.The process of adding load to the steel bars was achieved by the self-balancing reaction frame.The test results show that the splitting failure of bond has been seen,while the stress of steel bars doesn't reach the ultimate tensile strength.It is suggested that according to the experimental results,the direct-anchorage form should not be used in the collapse-resistant design of RC frame structures,and other more effective anchorage form should be adopted in the future.It trends to improve the average bond stress under the single row reinforcement arrangement.Compared with the average bond stress under the double reinforcement arrangement,the average bond stress can be increased by 15％.关键词
RC框架结构/悬链线效应/黏结破坏/黏结锚固性能/劈裂破坏Key words
RC frame structure/catenary action/bond failure/bond-anchorage performance/splitting failure of bond分类
建筑与水利引用本文复制引用
许文柳,袁波,赵晶,魏艳辉,陈红鸟..悬链线效应下钢筋与混凝土黏结锚固性能试验研究[J].建筑结构学报,2017,38(7):137-145,9.基金项目
国家自然科学基金项目(51168010). （51168010）
