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目的:提出一种震后功能可快速恢复的装配式中柱节点,并建立其设计理论;考察装配式中柱节点的抗震性能及震后修复性能,并提出设计建议。创新点:提出一种可快速恢复震后功能的装配式中柱节点;2.提出装配式中柱节点设计理论,并通过数值手段对其合理性进行校核;3.试验研究考察基础试件的抗震性能及震后修复性能。方法:1.通过理论分析手段建立装配式中柱节点设计理论;2.利用数值模拟手段通过4组8个算例来验证节点设计理论,并对节点抗震性能进行数值研究;3.对基础试件进行低周往复荷载试验研究及修复试验研究,进一步验证设计理论的合理性,并考察节点的抗震性能及震后修复性能。结论:1.提出的设计理论可准确地预测装配式中柱节点的屈服荷载;2.设计合理的装配式中柱节点具有良好的承载性能及滞回特性,可满足结构震后功能修复要求;3.翼缘连接盖板厚度和材性、中间螺栓间距和梁段间隙参数对节点抗震性能影响较大,需合理设置。
OBJECTIVE: To put forward a kind of assembled center column joint with quick post-earthquake function recovery and to establish its design theory. The anti-seismic performance and the post-earthquake repair performance of the assembled mid-column joint are investigated and the design suggestions are put forward. Innovative point: put forward a post-earthquake function can be quickly assembled center column node; 2. Proposed assembly center column node design theory, and by numerical means to verify its rationality; 3. Experimental study of the basic specimen Seismic performance and post-earthquake repair performance. Methods: 1.The theory of assembly-type mid-column design was established by theoretical analysis; 2. The numerical simulation was used to validate the design theory of joints by four groups of 8 examples; and the numerical study of the seismic performance of joints was carried out.3. Pieces for low cycle reciprocating load test and repair test study to further verify the rationality of design theory and study the node seismic performance and post-earthquake repair performance. Conclusions: 1. The proposed design theory can accurately predict the yield load of the fabricated mid-column joints; 2.The well-designed fabricated mid-column joints have good bearing capacity and hysteretic characteristics to meet the post-earthquake functional repair requirements; 3. Flange connection cover thickness and material properties, the middle bolt spacing and beam gap parameters on the seismic performance of a larger node, the need to set reasonable.