摘要
为了研究撒布式钢纤维替代部分纵筋的可行性,对1组普通再生混凝土梁与3组撒布式钢纤维再生混凝土梁实施四点弯曲加载测试,对比分析了较低钢纤维撒布量、较高配筋率试验组与较高钢纤维撒布量、较低配筋率试验组的开裂弯矩与极限弯矩、延性与耗能、变形与挠度。结果表明:在开裂弯矩、极限弯矩、荷载-挠度曲线的弹性阶段与带裂缝工作阶段时,撒布式钢纤维替代部分纵筋是可行的;而在延性、耗能、荷载-挠度曲线的钢筋屈服后阶段时则是不可行的。
In order to study the feasibility of replacing part of longitudinal reinforcement by layered steel fibers,four-point bending tests are conducted on one group of ordinary recycled concrete beam and three groups of layered steel fibers recycled concrete beams.The cracking moment and ultimate moment,ductility and energy dissipation,deformation and deflection of the experimental groups with lower contents of steel fibers and higher reinforcement ratio and the experimental groups with lower reinforcement ratio and higher contents of steel fibers are compared and analyzed.The results show that it is feasible to replace some longitudinal reinforcements with layered steel fibers when considering cracking moment,ultimate moment,elastic stage and working stage with cracks of load-deflection curve.However,it is not feasible when considering ductility,energy dissipation and post-yield stage of load-deflection curve.
作者
郭航
唐佳军
杨延岐
GUO Hang;TANG Jiajun;YANG Yanqi(School of Civil Engineering,Changchun Institute of Technology,Changchun 130012,China)
出处
《长春工程学院学报（自然科学版）》
2023年第4期8-11,共4页
Journal of Changchun Institute of Technology：Natural Sciences Edition
基金
中交路建科技研发项目(LJLJBF-PJ2021005971-061823014)。
关键词
撒布式钢纤维
配筋率
延性
耗能
挠度
layered steel fibers
reinforcement ratio
ductility
energy consumption
deflection
