建筑钢结构进展2025，Vol.27Issue(11)：118-126,9.DOI:10.13969/j.jzgjgjz.20240606001
内置T肋圆管钢桥墩的延性性能有限元分析
Finite Element Analysis on Ductility Behavior of Steel Pipe-Section Pier with T-Shaped Stiffeners
摘要
Abstract
In order to study the load-carrying capacity and ductility behavior of steel pipe-section piers with T-shaped stiffeners subjected to a constant vertical load and cyclic lateral loads,the accuracy of the employed finite element analytical method is firstly verified by comparing the analytical results with the existing test results.After that,the effects of normalized radius-to-thickness ratio,normalized slenderness ratio of the pier,normalized slenderness ratio of the longitudinal stiffener and axial compression ratio on the pier with eight T-shaped stiffeners are investigated through parametric study.Finally,based on the parametric analytical results,the formulas are proposed to predict the load-carrying capacity and ductility of the piers.The research results show that with the increase of normalized radius-to-thickness ratio,normalized slenderness ratio of the pier,normalized slenderness ratio of the longitudinal stiffener and axial compression ratio,the peak point of the lateral load-displacement skeleton curves at the top of the piers gradually decreases,and the downward trend becomes faster at the post-peak stage,which indicates that the load-carrying capacity and ductility behavior of the steel piers gradually decrease.By reducing the normalized radius-to-thickness ratio,normalized slenderness ratio of the pier,normalized slenderness ratio of the stiffener and axial compression ratio,the ultimate bearing capacity and ductility of steel bridge piers can be significantly improved.关键词
内置T肋圆管钢桥墩/参数化分析/极限承载力/延性性能/骨架曲线Key words
steel pipe-section pier with T-shaped stiffeners/parametric analysis/load-carrying capacity/ductility behavior/skeleton curve分类
交通运输引用本文复制引用
上官城鑫,高圣彬,董江磊..内置T肋圆管钢桥墩的延性性能有限元分析[J].建筑钢结构进展,2025,27(11):118-126,9.基金项目
国家自然科学基金(51778361) （51778361）
