摘要
Abstract
In order to study the seismic performance of steel fiber reinforced concrete and flat beam width on flat beam-columnjoints,four flat beam-column joints were designed in this paper.The failure forms,stiffness degradation,hysteretic characteristics and shear deformation of the specimens were analyzed by fractional loading tests under low cyclic loading.The results show that steel fiber can effectively improve the ultimate bearing capacity and stiffness of flat beam-column joints.The ultimate load of A-4 specimen with steel fiber is 29.3%higher than that of A-1 specimen without fiber.The bearing capacity of wide flat beam-column joints decreased significantly.When the displacement ductility coefficient is 1,the bearing capacity reduction coefficient of A-3 specimens with wide flat beam-column joints is 19.38%lower than that of A-1 specimens with equal width flat beam-column joints.In conclusion,the wide flat beam-column joint with steel fiber has better seismic performance.关键词
钢纤维混凝土/扁梁柱节点/钢纤维/扁梁宽度/抗震性能/位移延性系数Key words
Steel fiber reinforced concrete/Flat beam column joint/Steel fiber/Flat beam width/Seismic performance/Displacement ductilitycoefficient分类
建筑与水利
