Research on the construction parameters of horizontal joints in longitudinal notched shear walls
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.
longitudinal notched shear wallhorizontal connection reinforcementanchorage performancepull-out testforms of damage
万方数据
维普
