In order to study the effect of different construction parameters on the anchorage performance of horizontal connect-ing reinforcement in longitudinal notched shear walls,six groups of different variations of construction parameters were designed,and 36 shear wall specimens were subjected to horizontal connecting reinforcement pullout tests.The test results show that:the C-type opening specimens with horizontally distributed reinforcement all produce post-poured concrete pullout damage,and the rest of the specimens all produce horizontal connection reinforcement fracture damage.Arrangement of ring hoop reinforcement at the horizontal connection of notch,increase the amount of longitudinal steel reinforcement,increase the roughness of the notch inner surface can delay the damage of cast-in-place concrete,and improve the anchorage performance of horizontal connection reinforcement.For the horizontal connection reinforcement of HRB400E grade of 8 mm in diameter,the depth of notch of 200 mm and 150 mm can satisfy the anchorage requirements;When the depth of notch is 200 mm,the thickness of protective layer of notch concrete is increased from 15 mm to 45 mm,and the anchorage performance of longitudinal notched shear wall for horizontal connecting reinforcement is slightly reduced.
关键词
纵向凹槽剪力墙/水平连接钢筋/锚固性能/拉拔试验/破坏形式
Key words
longitudinal notched shear wall/horizontal connection reinforcement/anchorage performance/pull-out test/forms of damage
维普
万方数据