结构工程师2026，Vol.42Issue(2)：12-22,11.DOI:10.15935/j.cnki.jggcs.202602.0002
屈曲约束支撑屈服后刚度比影响因素分析及计算方法
Influencing Factors Analysis and Calculation of Post-Yield Stiffness Ratio for Buckling-Restrained Brace
胡大柱 1张庆博 1钱小华2
作者信息
- 1. 上海应用技术大学城市建设与安全工程学院,上海 201418
- 2. 上海蓝科建筑减震科技股份有限公司,上海 200441
- 折叠
摘要
Abstract
Based on theoretical calculation formulas for the stiffness of buckling-restrained braces alongside existing experimental data,the primary factors affecting the post-yield stiffness ratio of buckling-restrained braces were identified.A test specimen of buckling-restrained brace with cross-sectional core plate was designed,and its hysteretic behavior was elucidated through experiment.The finite element model was subsequently validated against the test results.The impact of core plate material and the axial stiffness ratio between the core plate elastic segment and yielding segment on the post-yield stiffness of buckling-restrained braces were systematically examined through finite element analysis.The analytical results demonstrated that the material of the core plate have a substantial influence on the post-yield stiffness ratio of buckling-restrained brace.The post-yield stiffness ratio increases with the increase of elastic segment length and section area.And changing the length of the elastic segment has a greater impact on the post-yield stiffness ratio.Through comprehensive parameter analysis,predictive formulas have been derived for calculating the post-yield stiffness ratio of buckling-restrained braces with various core plate materials.These formulas are intended to aid engineering designers in their calculations and design processes.关键词
屈曲约束支撑/屈服后刚度/刚度比/有限元/参数分析/拟合Key words
buckling-restrained braces/post-yield stiffness/stiffness ratio/finite element analysis/parametric analysis/formula calibration分类
建筑与水利引用本文复制引用
胡大柱,张庆博,钱小华..屈曲约束支撑屈服后刚度比影响因素分析及计算方法[J].结构工程师,2026,42(2):12-22,11.
