1.河南工业大学土木工程学院,河南 郑州 450001
2.河南城建学院,河南 平顶山 467036
3.河南省城乡规划设计研究总院,河南 郑州 450044
4.东南大学土木工程学院,江苏 南京 210096
庞 瑞(1981-),男,副教授,博士。主要从事混凝土结构、工程结构抗震与防灾研究。Email: pangrui@haut.edu.cn
收稿:2019-06-13,
修回:2020-04-16,
纸质出版:2020-12-15
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庞瑞,王璐,倪红梅等.混凝土空心楼盖板柱增强节点抗震性能试验研究[J].防灾减灾工程学报,2020,40(06):919-928.
PANG Rui,WANG Lu,NI Hongmei,et al.Experimental Study on the Seismic Behavior of Strengthened RC Slab⁃column Connections in Flate Plate Structures[J].Journal of Disaster Prevention and Mitigation Engineering,2020,40(06):919-928.
庞瑞,王璐,倪红梅等.混凝土空心楼盖板柱增强节点抗震性能试验研究[J].防灾减灾工程学报,2020,40(06):919-928. DOI: 10.13409/j.cnki.jdpme.2020.06.010.
PANG Rui,WANG Lu,NI Hongmei,et al.Experimental Study on the Seismic Behavior of Strengthened RC Slab⁃column Connections in Flate Plate Structures[J].Journal of Disaster Prevention and Mitigation Engineering,2020,40(06):919-928. DOI: 10.13409/j.cnki.jdpme.2020.06.010.
为研究空心楼盖板柱增强节点的抗震性能,进行了3个板柱节点在低周往复荷载作用下的拟静力试验,对节点的承载能力、开裂模式、破坏形态、滞回曲线、位移延性、刚度退化和耗能能力等进行了较为系统的研究。结果表明:平行布管方式下空心板柱节点的承载力、刚度、耗能能力和刚度退化等抗震性能指标均优于正交布管方式布管下的板柱节点;配置型钢剪力架能显著提高空心楼盖板柱节点承载力与抗震性能,配置弯起钢筋对节点抗震性能提高的作用不明显。建议工程应用时综合考虑空心楼盖板柱节点的抗冲切与抗震需求来选择增强元件,同时根据建筑平面布局和抗侧力结构布置等情况,合理选择空心芯管的布置方向,以提高结构整体抗震性能。研究成果可为采用空心管(或柱状芯材)的空心楼盖板柱结构的研究和应用提供参考。
An experimental program consisting of prototype tests on selected slab-column connections was conducted to evaluate the seismic behavior of the proposed slab-column connections in hollow floor flat slab column structure. Performance of the test specimens was evaluated in terms of bearing capacity, crack and failure mode, hysteretic curves, ductility, energy dissipation capacity and stiffness degradation. The test results review that the seismic behavior of the column with parallel arranged hollow tubular was better than that of the column with orthogonal arranged hollow tubular; the behavior of slab-column connections strengthened by section steel cross bridging was better than that of connects strengthened by bend-up bars. It is proposed that the demand of seismic behavior and punching shear behavior should be considered simultaneously at the project design stage. Furthermore, the hollow tubular rational distribution should be determined considering the layout of the building structure and the arrangement of the lateral force resistant system.
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