东南大学学报（自然科学版）2026，Vol.56Issue(8)：1156-1167,12.DOI:10.3969/j.issn.1001-0505.2026.08.007
基于灌浆套管连接的装配式钢管混凝土柱-UHPC环梁节点抗震性能研究
Study on seismic performance of prefabricated concrete-filled steel tube column-UHPC ring beam joints using grouted sleeve connections
摘要
Abstract
To address the complex structure and casting challenges of the conventional concrete-filled steel tube(CFST)column-ring beam joint,a new prefabricated CFST column-ultra-high-performance concrete(UHPC)ring beam joint with grouted sleeve connections was proposed.Low-cycle reversed loading tests were conducted to evaluate the influence of axial compression ratio and ring beam concrete type on joint perfor-mance,with comparisons to the conventional monolithic joint.A finite element model was established and verified by experiments,and parametric analysis was performed.Results show that the new type of joint exhib-its two main failure modes:shear failure in the ring beam region concrete and plastic hinge failure at the beam end(steel profile cut-off region).The hysteretic performance of the proposed joint is comparable to the con-ventional joint.The use of UHPC instead of normal concrete effectively prevents shear failure in the ring beam.Increasing the axial compression ratio reduces hysteretic performance and ductility of the joint.The nu-merical simulation results are in good agreement with the experimental results,and the parametric analysis re-veals the effect of beam reinforcement ratio,ring beam concrete type,and axial compression ratio on the hys-teretic performance of the joint.The findings provide technical support for the safety design of this type of joint.关键词
装配式结构/环梁节点/超高性能混凝土(UHPC)/灌浆套管连接/抗震性能Key words
prefabricated structure/ring beam joint/ultra-high-performance concrete(UHPC)/grouted sleeve connection/seismic performance分类
建筑与水利引用本文复制引用
黄振宇,马熙艨,韩世文,周英武..基于灌浆套管连接的装配式钢管混凝土柱-UHPC环梁节点抗震性能研究[J].东南大学学报（自然科学版）,2026,56(8):1156-1167,12.基金项目
国家自然科学基金面上资助项目(51978407) （51978407）
广东省杰出青年基金资助项目(2022B1515020037) （2022B1515020037）
深圳市基础研究资助项目(面上项目)(JCYJ20240813143019025,JCYJ20250527081858003) （面上项目）
中央科研业务费人才科研启动专项资助项目(12826086). （12826086）
