铁道科学与工程学报2016，Vol.13Issue(4)：711-716,6.
配箍率对高强钢筋RPC梁抗剪性能影响研究
Study on the influence of stirrup ratio to shear performance of RPC beams with high strength reinforcement
摘要
Abstract
In order to study the shear performance of reactive powder concrete simply supported beams with HRB500 level high strength reinforcement,four RPC beams'shear failure experiment was carried out under con-centrated load by changing the stirrup ratio.The influence of different stirrup ratio on diagonal cracks develop-ment,bearing capacity of the testesd beams,and the maximum diagonal crack width shear are compared and an-alyzed.Test results show that high-strength stirrups and reactive powder concrete can work coordinately,and the shear ductility is improved.Generally,critical diagonal cracks of reactive powder concrete beams with high strength reinforcement are formed by the development of abdominal shear diagonal cracks.Stirrup ratio of the tested beams had no obvious effect on the diagonal cracking load.With the increase of stirrup ratio,the diagonal crack width becomes smaller,and the shear bearing capacity becomes higher.Truss-arch theory model formula is suitable for the shear bearing capacity calculation of high strength reinforced RPC beams with stirrups.关键词
高强钢筋/活性粉末混凝土/配箍率/斜裂缝宽度/受剪承载力Key words
high strength reinforcement/reactive powder concrete/stirrup ratio/diagonal crack width/shear bearing capacity分类
建筑与水利引用本文复制引用
金凌志,梅臣..配箍率对高强钢筋RPC梁抗剪性能影响研究[J].铁道科学与工程学报,2016,13(4):711-716,6.基金项目
国家自然科学基金资助项目(51368013) （51368013）
广西重点实验项目资助(2015 -A-02) （2015 -A-02）
