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通过在加载柱头施加偏心荷载来模拟板柱结构局部节点失效后相邻节点在附加剪力和不平衡弯矩共同作用下的受力工况,对中柱节点冲切破坏前、后的试验现象及试验结果进行对比分析;此外,试验还选取纵向钢筋配筋率、穿柱钢筋布置方式为研究参数,对偏心荷载作用下板柱节点抗冲切以及冲切破坏后的受力性能和破坏机理进行研究;最后,采用规范计算公式对试件承载力进行预测并与试验结果进行对比。研究成果可为板柱结构抗连续倒塌设计提供参考。
By applying eccentric load to the column stiffeners to simulate the stress conditions of the adjacent nodes under the joint action of the additional shear and the unbalanced bending moment after the failure of the local nodes of the slab column, And the test results were compared and analyzed. In addition, the longitudinal reinforcement ratio and the arrangement of through-column reinforcement were selected as the research parameters. The impact performance and failure mechanism of the slab-column joints subjected to eccentric punching and punching failure Finally, we use the standard formula to predict the bearing capacity of the specimen and compare it with the test results. The research results can provide a reference for anti-continuous collapse design of plate-column structure.