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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。
In order to study the seismic behavior of reinforced concrete column-column joints with studs under high shear-and-shear ratio, three quasi-static forces of plate-and-column joint specimens with weight-shear ratios of 0.886,0.844 and 0.802 under reciprocating horizontal force test. The studs of Joint1 and Joint2 were orthogonally arranged, and the studs of Joint3 were arranged radially. The test results show that the punching failure occurred on the floor of the three specimens. The punching failure of Joint 1 occurred in the peg group. The punching failure of Joint 2 occurred outside the peg group. Joint 3 Punching failure occurred both inside and outside the peg group; the displacement angles of the three specimens were 1 / 69,1 / 46 and 1/40 respectively when the specimen was damaged; The shear deformation ratio still has a good level of deformation capacity, using non-prestressed concrete floor peg group punching cutting capacity calculation formula is in good agreement with the test results.