摘要
为研究高重剪比下配置栓钉的钢筋混凝土板柱节点的抗震性能,完成了3个重剪比分别为0.886、0.844和0.802的板柱节点试件在往复水平力作用下的拟静力试验。试件Joint1和Joint2的栓钉采用正交布置,Joint3的栓钉采用放射状布置。试验结果表明:3个试件的楼板均发生了冲切破坏,试件Joint 1冲切破坏发生在栓钉群内,试件Joint 2冲切破坏发生在栓钉群外,试件Joint 3在栓钉群内、外均发生冲切破坏;破坏时3个试件的层间位移角分别为1/69、1/46和1/40;配置抗冲切栓钉的板柱节点在高重剪比下仍具有良好的水平变形能力,采用非预应力混凝土楼板栓钉群外冲切承载力计算公式的计算结果与试验结果符合良好。
To study the seismic behavior of reinforced concrete slab-column connections with shear studs, three slabcolumn connection specimens, with large gravity-shear ratio of 0. 886, 0. 844 and 0. 802 respectively, were tested under lateral cyclic loading. The layout of the punching shear studs was orthogonal for specimens Joint 1 and Joint 2 and radial for Joint 3. The results show that the specimens fail due to punching shear, but the locations of the punched sections are different. The tested ultimate story drift ratios are 1/69, 1/46 and 1/40 respectively. The slab-column connection specimens with studs can provide good lateral deformation capacity when the gravity-shear ratio is large. The punching shear strengths outside the studs of the specimens, calculated by the adopted formula, agree well with the test results.
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2012年第7期126-132,共7页
Journal of Building Structures
基金
中国建筑科学研究院基础科研项目(20031902470730001)
关键词
板柱节点
抗冲切栓钉
重剪比
拟静力试验
抗震性能
slab-column connection
punching shear stud
gravity-shear ratio
quasi-static test
seismic performance
