装配式混凝土框架结构梁柱节点抗震性能试验研究
引用文献：
徐其功 陈文东 李娜. 装配式混凝土框架结构梁柱节点抗震性能试验研究[J]. 建筑结构，2022，48（08）：53-59.
XU Qigong CHEN Wendong LI Na. Experimental study on seismic performance of beam-column joints of fabricated concrete frame structure[J]. Building Structure，2022,48（08）：53-59.
摘要：为解决装配式混凝土框架结构梁柱节点核心区钢筋拥塞的问题，设计了两种梁柱节点构造，一种为核心区与左右两梁一体预制，下柱伸出钢筋穿过其中预留孔道与上柱连接；一种为核心区与下柱一体预制，两段预制梁与其后浇连接，分别制作了两个足尺模型试件进行低周反复荷载试验，考察两个试件的破坏形态、承载力、延性性能、刚度退化、耗能能力等。试验结果表明：核心区与梁一体预制的节点的抗震性能可以等同于现浇节点；使用矩形截面预制梁对梁柱节点抗震性能的影响接近或优于凹口截面预制梁；核心区与下柱一体预制的节点，节点伸出的梁底纵筋采用大直径钢筋，可提高节点的承载力和刚度，同时其延性和耗能能力降低，这种构造未能实现强连接。
关键词：装配式混凝土框架结构，梁柱节点，灌浆套筒连接，抗震性能，强连接
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参考文献[1] 装配式混凝土结构技术规程：JGJ 1—2014[S].北京：中国建筑工业出版社，2014.
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[2] 抗震节点研究小组.现浇柱预制梁框架边节点抗震试验[J].建筑结构，1979(1):1-9.
[3] 薛伟辰，胡翔.预制混凝土框架结构体系研究进展[J].同济大学学报(自然科学版),2020,48(9):1241-1255.
[4] RESTREPO J I,PARK R,BUCHANAN A H.Tests on connections of earthquake resisting precast reinforced concrete perimeter frames of buildings[J].PCI Journal,1995,40(4):44-61.
[5] Building code requirements for structural concrete:ACI 318-14[S].Farmington Hills:American Concrete Institute,2014.
[6] 周金，徐其功，李争鹏.装配整体式混凝土结构梁柱连接的探讨[J].四川建筑科学研究，2016,42(5):20-22.
[7] 徐其功.装配式混凝土结构设计[M].北京：中国建筑工业出版社，2017.
[8] 过民龙，徐其功，李娜，等.装配式混凝土凹口合梁静力性能试验研究[J].建筑结构，2020,50(S1):591-596.
[9] 钢筋连接用灌浆套筒：JG/T 398—2019[S].北京：中国建筑工业出版社，2019.
[10] 建筑抗震试验规程：JGJ/T 101—2015[S].北京：中国建筑工业出版社，2015.
[11] 张玉青，王平，李德建，等.循环加卸载条件下滞回曲线的研究[J].建筑工程技术与设计，2016 (18):2569.
Experimental study on seismic performance of beam-column joints of fabricated concrete frame structure
Abstract: In order to solve the problem of steel congestion in the core area of the beam-column joint of the fabricated concrete frame structure, two beam-column joint were designed. One is that the core area and the left and right beams are prefabricated as a whole, and the protruding reinforcement of the lower column is connected with the upper column through the reserved channel. The other is that the core area and the lower column are prefabricated as a whole, and the two precast beams are connected with the post pouring. Two full-scale model specimens were made for low cyclic loading test to investigate the failure mode, bearing capacity, ductility propertie, stiffness degradation and energy dissipation capacity of two specimens. The test results show that the seismic performance of the joint whose core area and the beam are prefabricated as a whole can be equivalent to that of the cast-in-place joint. The influence of precast beam with rectangular section on the seismic performance of beam-column joints is close to or better than that of precast beam with notched section. For the joint whose core area and the lower column are prefabricated as a whole, the protruding reinforcement at the bottom of the beam is large-diameter reinforcement, which can improve the bearing capacity and stiffness of the joint, and at the same time reduce its ductility and energy dissipation capacity. This configuration fails to achieve strong connections.
Keywords: fabricated concrete frame structure; beam-column joint; sleeve grouting connection; seismic performance; strong connection
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