南京工业大学学报（自然科学版）2025，Vol.47Issue(5)：560-569,10.DOI:10.3969/j.issn.1671-7627.2025.05.010
预制混凝土柱-组合梁节点抗震性能试验研究
Research on the seismic performance of precast concrete column-composite beam joint
摘要
Abstract
To address the demand for large open spaces in public buildings and overcome challenges such as reinforcement congestion in precast reinforced concrete(RC)beam-column joints,as well as the complexity and high cost of constructing composite beam-column joints,a new joint system is proposed.This system connects a precast RC column and a composite beam by embedding a steel skeleton within the joint core and casting concrete in situ at the joint and beam ends.This forms a steel-core-connected precast beam-column joint.In order to evaluate the seismic performance of the proposed joint,three prefabricated specimens with different steel skeletons and one cast-in-place control specimen were subjected to low-cycle repeated lateral loading tests to characterize their failure mechanisms and modes.Key seismic performance metrics,including load-bearing capacity,stiffness,displacement ductility,and energy dissipation,were evaluated.Based on the test results of the optimal specimen,the finite element analysis was conducted to investigate how the height of the steel plate frame within the embedded steel frame and the placement of vertical stiffeners at the beam ends affect joint performance.The results show that,compared with the cast-in-place specimen,all three prefabricated specimens exhibit beam-hinge failure.They achieved similar load-bearing capacity and stiffness while showing better displacement ductility and energy dissipation.Among the three,the specimen using a steel skeleton with spiral stirrups exhibited the best seismic performance.Changes in the height of the steel plate frame and the layout of the vertical stiffeners had minimal influence on the overall behavior of the joint,indicating that there is room for further optimization of the steel skeleton configuration in future research.关键词
预制混凝土/混凝土柱/组合梁/钢骨/钢筋混凝土(RC)梁柱节点/抗震性能Key words
precast concrete/concrete column/composite beam/steel skeleton/reinforced concrete(RC)beam-column joint/seismic performance分类
建筑与水利引用本文复制引用
朱张峰,金益康..预制混凝土柱-组合梁节点抗震性能试验研究[J].南京工业大学学报（自然科学版）,2025,47(5):560-569,10.基金项目
国家重点研发计划(2016YFC0701703) （2016YFC0701703）
国家自然科学基金面上项目(51678294) （51678294）
