为进一步提高用于钢-混凝土组合结构的柱构件的装配效率，并改善其抗震性能，降低生产成本，提出一种新型浆锚连接方钢管混凝土拼接柱设计方法。通过对缩尺比例为2的5个拼接柱构件和1个整浇柱构件开展拟静力试验，获得不同配筋率、配筋形式和柱-柱节点拼接部位的新型拼接柱的抗震性能。试验结果表明：新型拼接柱构件在低周期反复荷载下的破坏过程及其形态与整浇柱构件相似，其滞回曲线饱满，耗能能力、抗承载力退化和抵抗变形（刚度）能力均比整浇柱构件更加优良，特别是将柱-柱节点拼接部位设于柱间反弯点区域的P类型构件变形能力最佳，证明了该新型拼接柱设计方法的科学性，并对提高钢-混凝土组合框架结构的整体抗震性能具有应用潜力。

A novel design method for concrete-filled square steel tubular spliced columns with grouting anchor connections is proposed in this paper to increase the assembly efficiency, improve the seismic performance and reduce production cost of the column members in the steel-concrete composite structures. The seismic performances of novel spliced columns with different reinforcement ratios, reinforcement configurations and column-column joint positions were tested via quasi-static loading test on five spliced columns and one monolithic cast column with a scale ratio of 2. The results showed that the failure modes and processes of the novel spliced column members under low cyclic loading are similar to those of the reference member. The hysteretic curves of the novel spliced columns are full, and the energy dissipation capacity, load bearing capacity degradation and stiffness were advantageous than those of the reference column member. In particular, the P-type members with the column-column joint located in the column inflection point area had better ductility and deformation capacity under the seismic effect. The test results identify that the novel spliced columns designed method proposed is scientific and has application potential to improve the overall seismic performance of the steel-concrete composite frame structures.

TU398

国家自然科学基金（52130901）；重庆市技术创新与应用发展专项（cstc2019jscx-gksbX0013）；重庆市自然科学基金创新群体科学基金（cstc2020jcyj-cxttX0003）