(1 河北工业大学土木与交通学院， 天津 300401； 2 河北省土木工程技术研究中心， 天津 300401)

［摘要］为研究装配式带钢连接件混凝土柱-预埋工字钢混凝土梁连接节点的滞回性能，设计2个装配式高强钢筋混凝土框架节点和1个现浇高强钢筋混凝土框架节点，进行低周往复加载试验，对比分析其滞回性能、刚度退化、骨架曲线、承载力退化和耗能能力等。结果表明：与现浇高强钢筋混凝土框架节点试件相比，带钢连接件混凝土柱-预埋工字钢混凝土梁连接节点试件的滞回曲线更为饱满，刚度退化得到有效减缓，承载力降低系数增加，各主要阶段的等效黏滞阻尼系数和总等效黏滞阻尼系数增加，耗能能力得到提高，承载能力和变形能力也得到提高；预制柱中采用带水平连接板的方钢管连接件在改善装配式混凝土框架节点滞回性能方面效果更佳。

［关键词］装配式混凝土节点； 滞回性能； HRB600钢筋； 低周往复荷载

中图分类号：TU375文献标识码：A文章编号：1002-848X(2020)03-0077-04

Experimental research on hysteretic behavior of fabricated reinforced concrete frame joints with high-strength steel bars

Rong Xian1,2, Yang Hongwei1, Zhang Jianxin1,2

(1 School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, China;2 Civil Engineering Technology Research Center of Hebei Province, Tianjin 300401, China)

Abstract:In order to study the hysteretic behavior of the connection joints between the prefabricated concrete column with steel connectors and the concrete beam with embedded Ⅰ-shaped steel, two prefabricated reinforced concrete frame joints with high-strength steel bars and one cast-in-place reinforced concrete frame joint with high-strength steel bars were designed for low cyclic reciprocated loading tests. The hysteretic behavior, stiffness degradation, skeleton curve, bearing capacity degradation, and energy consumption capacity were compared and analyzed. The results show that compared with the cast-in-place reinforced concrete frame joint test specimen with high-strength steel bars, the hysteretic curve of the connection joints between the  concrete column with steel connectors and the concrete beam with embedded Ⅰ-shaped steel is fuller, and the stiffness degradation is effectively alleviated, and the bearing capacity reduction coefficient is increased. The equivalent viscous damping coefficients and total equivalent viscous damping coefficients at all major stages are increased, and the energy consumption capacity is improved, and the bearing capacity and deformation capacity are improved. The use of square steel tube connectors with horizontal connecting plates in the precast columns is more effective in improving the hysteretic performance of fabricated concrete frame joints.

Keywords:prefabricated concrete joint; hysteretic behavior; HRB600 steel bar; low cyclic reciprocated loading

*河北省自然科学基金项目（E2018202290，E2017202278），天津市建委科技项目（HE1863），河北省高层次人才资助项目（B2017003003）。

通讯作者：张健新，博士，讲师，硕士生导师，Email: zhangjianxin505@126.com。