Effects of Delamination on the Performance of Two-Way Reinforced Concrete Slabs
Effects of Delamination on the Performance of Two-Way Reinforced Concrete Slabs
复制标题
分层对双向钢筋混凝土板性能的影响
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
D. Mitchell
中科院分区：
文献类型：
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作者：
Julie L Reilly;W. D. Cook;J. Bastien;D. Mitchell
报道了模拟分层的双向钢筋混凝土板柱连接的测试。将实验结果与配套样本的测试结果进行比较，以研究显着分层对样本冲孔和冲孔后响应的影响，以及结构完整性加固对分层样本冲孔后行为的影响。结果还与冲裁剪切阻力的预测和冲裁后剪切阻力的预测进行了比较。顶部钢筋的显着分层导致样本的预冲切刚度、冲切抗剪力和冲切后抗剪力下降。结构完整性加固的提供允许开发冲孔后抗剪机制，增加冲孔后抗剪力和最终挠度。
Tests on two-way reinforced concrete slab-column connections with simulated delamination are reported. The experimental results are compared with test results of companion specimens to investigate the effects of significant delamination on the punching and postpunching responses of the specimens, as well as the effects of structural integrity reinforcement on the postpunching behavior of delaminated specimens. The results are also compared with predictions of punching shear resistance and postpunching shear resistance predictions. Significant delamination of the top reinforcement caused decreases in prepunching stiffness, punching shear resistance, and postpunching shear resistance of the specimens. The provision of structural integrity reinforcement allowed for the development of a postpunching shear resisting mechanism, increasing the postpunching shear resistances and ultimate deflections.