东南大学学报（自然科学版）2026，Vol.56Issue(7)：999-1006,8.DOI:10.3969/j.issn.1001-0505.2026.07.007
UHPC空心墩滞回加载开裂模式和抗震性能试验研究
Cracking patterns and seismic performance of UHPC hollow piers subjected to hysteretic loading test
摘要
Abstract
Ultra-high performance concrete(UHPC),characterized by its high strength and light self-weight,has attracted increasing attention in bridge engineering in recent years and has been applied in demonstration projects.In this study,the concept of replacing conventional concrete bridge piers with UHPC hollow piers was proposed.Quasi-static tests were conducted on three UHPC circular hollow pier specimens and one con-ventional concrete circular hollow pier specimen for comparison.Regarding the cracking pattern and mecha-nism of circular hollow piers,the principal stress trajectories under lateral loading were presented for the first time,and a formula for calculating the principal tensile stress was derived,revealing the crack propagation be-havior of such piers.The experimental results indicate that UHPC hollow piers exhibit superior lateral strength,higher stiffness,and greater energy dissipation capacity.Their structural performance is significantly influenced by the reinforcement ratio and wall thickness.Based on the hysteretic response,the seismic perfor-mance of UHPC hollow piers is further evaluated.Material strength and wall thickness of hollow pier have a significant effect on stiffness,while the influence of reinforcement ratio is relatively limited.However,a low reinforcement ratio leads to a reduced ductility.UHPC circular hollow piers represent a promising alternative to conventional concrete bridge piers.关键词
空心墩/超高性能混凝土(UHPC)/拟静力试验/主应力迹线/开裂模式Key words
hollow pier/ultra-high performance concrete(UHPC)/quasi-static test/principal stress trajecto-ries/cracking pattern分类
交通工程引用本文复制引用
刘钊,章世祥,卓为顶,王序,张书兵..UHPC空心墩滞回加载开裂模式和抗震性能试验研究[J].东南大学学报（自然科学版）,2026,56(7):999-1006,8.基金项目
国家重点研发计划资助项目(2019YFE0119800) （2019YFE0119800）
新疆维吾尔自治区揭榜挂帅"2+5"重点人才计划资助项目(19DZ2254200). （19DZ2254200）
