中南大学学报（自然科学版）2017，Vol.48Issue(6)：1615-1620,6.DOI:10.11817/j.issn.1672-7207.2017.06.027
再生混凝土与钢筋间黏结应力分布函数
Bond stress distribution function between recycled concrete and steel rebar
摘要
Abstract
Six groups of average bond-slip curves between full natural aggregate/full recycled aggregate concrete and rebar and the rebar's strain along the embedment length were investigated by means of inner-embedded gauges,considering different distances among stirrups.The test data were used to calculate the bond stress,slip,and bond-slip curve was obtained at different locations.Finally,the bond stress distribution function between recycled concrete and steel rebar was established,and the mechanics of stirrups affected on bond distribution function was also analyzed.The results show that specimens without stirrups exhibit a higher bond stress near the load end than those stress near the un-load end.For specimens with stirrups,with the reduction of distance between stirrups,the ultimate bond strength and peak slip increase,the descending blanch of bond-slip curve becomes flatter,and the bond stress distribution becomes uniform as well.In addition,recycled coarse aggregate has little effect on the bond stress distribution.关键词
再生混凝土/内贴片/箍筋约束/黏结应力分布Key words
recycled concrete/inner-embedded gauge/confinement of stirrup/bond stress distribution分类
建筑与水利引用本文复制引用
杨海峰,邓志恒,龚马驰..再生混凝土与钢筋间黏结应力分布函数[J].中南大学学报（自然科学版）,2017,48(6):1615-1620,6.基金项目
国家自然科学基金资助项目(51308135) （51308135）
广西自然科学基金资助项目(2014GXNSFBA118242) （2014GXNSFBA118242）
广西防灾减灾重点实验室系统性研究课题(2013ZDX01)(Project(51308135) supported by the National Natural Science Foundation of China （2013ZDX01）
Project (2014GXNSFBA118242) supported by the National Science Foundation of Guangxi （2014GXNSFBA118242）
Project(2013ZDX01) supported by the Program of Key Laboratory of Disaster Prevention and Structural Safely of Guangxi) （2013ZDX01）
