装配式剪力墙齿槽式连接受剪性能研究

为研究装配式剪力墙齿槽式连接的受剪性能，进行了8片1/2缩尺剪跨比为0.54的齿槽式连接试件单调推覆加载试验。研究了装配式剪力墙齿槽式连接的破坏模式、开裂形态、荷载-位移曲线和承载力，分析了轴压比、暗柱设置、齿槽长度等因素对装配式剪力墙齿槽式连接受剪承载力的影响。结果表明：轴压比对齿槽式连接试件的开裂模式影响较大，轴压比较大的试件，裂缝开展以对角线方向的斜裂缝为主；轴压比较小的试件，裂缝开展以齿槽接合面裂缝为主；增加轴压比和设置暗柱提高了装配式剪力墙齿槽式连接的受剪承载力，齿槽长度对装配式剪力墙齿槽式连接受剪承载力影响较小。基于现有研究成果和试验结果，提出了装配式剪力墙齿槽式连接受剪承载力计算式，其计算结果与试验结果吻合较好。

Shear behavior on prefabricated shear wall alveolar type connection

In order to study the shear behavior of alveolar connection in RC shear wall under working state, eight 1/2 scaled RC shear walls of alveolar connection with the shear to span ratio of 0.54 were tested under monotonic load. The failure modes, cracking patterns, load-displacement curves and bearing capacity of RC shear walls of alveolar connection were studied. The influences of axial compressive ratio, setting of the edge member and length of the tooth groove were analyzed in this test program. The test results show that the axial compressive ratio has a great influence on cracking patters of the RC shear walls of alveolar connection.The cracks observed during the test are mainly diagonal cracks under high axial compressive ratio, while the cracks are mainly concentrated at the junction surface of tooth groove joint parts under low axial compressive ratio. Increasing the axial compression ratio and setting the edge member can increase the shear bearing capacity of the RC shear walls of alveolar connection, but the length of the tooth groove has no significant effect on its shear bearing capacity. The shear bearing capacity formula of RC shear walls of alveolar connection is proposed based on the existing research results, and the calculated results are in good agreement with the experimental results.