整体式拼缝连接的预制楼板-预制剪力墙节点试验

发布时间：2019-07-21 18:07

【摘要】：为研究整体式拼缝连接的预制楼板-预制剪力墙节点在预制楼板悬臂端竖向荷载作用下的受力性能,进行了1个边节点试件和2个中节点试件的静力试验.结果表明:3个试件的裂缝分布相同,且均为楼板受弯破坏;3个试件承载能力极限状态前的楼板悬臂端竖向荷载-挠度曲线基本相同,预制楼板固端受弯承载力差别不大,且与规范公式计算值的比值平均为1.29;套筒挤压搭接连接可有效传递预制楼板钢筋拉力;整体式拼缝可保证全装配楼盖的整体性,装配式剪力墙结构采用全装配楼盖时,预制楼板与预制墙之间可采用本文试件的整体式拼缝进行连接.
[Abstract]:In order to study the mechanical behavior of precast floor-precast shear wall joints with integral joint under vertical load at cantilever end of precast floor, the static tests of one side joint specimen and two middle joint specimens were carried out. The results show that the crack distribution of the three specimens is the same, and all of them are bending failure, the vertical load-deflection curve of the cantilever end of the floor before the ultimate state of bearing capacity of the three specimens is basically the same, the bending bearing capacity of the fixed end of the precast floor is not much different, and the average ratio with the calculated value of the code formula is 1.29. The steel bar tension of the precast floor can be effectively transmitted by the sleeve extrusion lap connection. The integral joint can ensure the integrity of the fully assembled floor. When the assembled shear wall structure adopts the fully assembled floor, the prefabricated floor and the prefabricated wall can be connected by the integral joint of the specimen in this paper.
【作者单位】：土木工程安全与耐久教育部重点实验室(清华大学);内蒙古蒙西工程设计有限公司;
【分类号】：TU398.2

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