摘要
针对适用于装配式多层混凝土剪力墙结构竖向接缝的干式连接方法进行直剪力学性能试验研究。这种连接方法采用高强螺栓连接,预制构件边缘无外露钢筋,具有生产、施工效率高等特点。设计并制作了4组共8个预制构件结合面试件,研究结合面的抗剪性能。研究表明,螺栓连接预制构件结合面的直剪破坏模式基本一致,与螺杆接触处的混凝土出现局压破坏,螺栓受拉剪产生弯曲变形;结合面的抗剪承载力主要来源于结合面间摩擦力和螺栓销栓力;增加墙体的厚度对承载力和刚度的提升效果不明显,增大连接螺栓直径可以有效地提高试件的承载力。结合试件工作机理给出了结合面抗剪承载力计算公式,为工程应用与标准编制提供依据。
The experimental research on direct shear mechanical performance of the vertical joints of prefabricated multi-storey concrete shear wall structure by means of the dry connection method were studied.This connection method uses high-strength bolt connection,and there is no exposed steel bar in prefabricated component edge.It has the characteristics of high production and high construction efficiency.Four groups of eight prefabricated components were designed and manufactured to study the shear resistance of the joint interface.The research shows that the direct shear failure mode of the joint interface of bolted prefabricated members is basically the same.The concrete contact with the bolts is damaged by local compression,and the bolts become deformed under tension and shear forces.The shear bearing capacity of the joint interface mainly comes from the friction force between the joint interfaces and the bolt pin force.Increasing the thickness of the wall has no obvious effect on the increase of the bearing capacity and stiffness.Increasing the diameter of the connecting bolt can effectively improve the bearing capacity of specimens.Based on the working mechanism of the specimens,the formulas for calculating the shear bearing capacity of the interface were given,which provide a basis for engineering application and standard compilation.
作者
侯全胜
侯和涛
李然
田春雨
马云飞
李青山
Hou Quansheng;Hou Hetao;Li Ran;Tian Chunyu;Ma Yunfei;Li Qingshan(School of Civil Engineering,Shandong University,Jinan 250061,China;China Academy of Building Research,Beijing 100013,China;Sany Group Co.,Ltd.,Beijing 102202,China)
出处
《建筑结构》
CSCD
北大核心
2019年第11期43-47,61,共6页
Building Structure
基金
十三五重点研发计划课题(2016YFC0701907)
中国建筑科学研究院应用技术研究课题(20150122330730033)
关键词
装配式多层混凝土剪力墙结构
结合面
螺栓连接
直剪性能
prefabricated multi-storey concrete shear wall structure
joint interface
bolt connection
direct shear performance
