土木工程与管理学报2017，Vol.34Issue(2)：81-86,6.
纤维替代按构造布置箍筋梁抗剪性能试验
Experiments on Shear Behavior of Beams Placed According to Constructive Reinforced Stirrups with Replace by Fibers
摘要
Abstract
An experimental investigation on the shear performance of fiber reinforced self-consolidating concrete beams was carried out. Ten simply supported beams were tested under symmetrically placed two-point concentrated loading. The main parameters are various fiber types, different fiber contents and different stirrups. The influence of steel fibers, hybrid steel fibers and synthetic fibers on the ultimate shear force, shear force-displacement curve and failure mode were studied. The possibility of using different fibers or the composite effect of fibers and stirrups to replace the shear stirrups were analyzed. The experimental results show that the ultimate shear force was obviously increased by steel fibers and hybrid fibers. The ultimate shear force of beam with 50 kg/m3 steel fibers is better than that of hybrid steel fibers 30 kg/m3 and synthetic fibers 5 kg/m3 . The stirrups ofφ6.5@150 placed according to constructive reinforced stirrups can be replaced by 50 kg/m3 steel fibers. The stirrups of φ6.5@150 or φ8@150 placed according to constructive reinforced stirrups can be replaced by composite effect of hybrid steel fibers 30 kg/m3 , synthetic fibers 5 kg/m3 and stirrups of φ6.5@250. The composite effect of 50 kg/m3 hybrid fibers and stirrups of φ6.5@250 can change the failure mode from a brittle shear collapse into a ductile flexural mechanism.关键词
纤维/构造布置箍筋/抗剪性能/极限剪力/破坏模式Key words
fiber/constructive reinforced stirrup/shear behavior/ultimate shear force/failure mode分类
交通工程引用本文复制引用
尤志国,周云龙,陈凯江,葛凯..纤维替代按构造布置箍筋梁抗剪性能试验[J].土木工程与管理学报,2017,34(2):81-86,6.基金项目
河北省自然科学基金( E2012401044) （ E2012401044）
华北理工大学培育基金项目( GP201523) （ GP201523）
华北理工大学青年基金项目( Z201509) （ Z201509）
