建筑钢结构进展2026，Vol.28Issue(6)：100-109,10.DOI:10.13969/j.jzgjgjz.20250719001
考虑约束作用的型钢混凝土柱轴心受压承载力计算
Axial Compressive Capacity Calculation of Steel Reinforced Concrete Columns Considering the Confinement Effect
摘要
Abstract
Current design codes for calculating the axial compressive capacity of steel reinforced concrete(SRC)columns largely neglect the confinement effects provided by the steel section and reinforcement,resulting in conservative results.In this study,a finite element model for SRC short columns was established based on the constitutive model of confined concrete to analyze the internal force distribution of the constituent materials.By combining existing experimental data from the literature with finite element parametric analysis,a calculation method for the axial compressive capacity of slender SRC columns was developed,explicitly accounting for the confinement effects.The results demonstrates that when SRC short columns reach their peak axial load,the average concrete stress under the confinement of the steel section and reinforcement can reach or even exceed its uniaxial compressive strength.The introduction of a confinement factor significantly enhances the calculation accuracy of the axial compressive capacity for SRC short columns and the stability factor.The results obtained from the proposed method show good agreement with the experimental data and finite element analysis results,validating its accuracy.关键词
型钢混凝土柱/轴心受压承载力/约束作用/规范对比/有限元分析/约束系数Key words
steel-reinforced concrete column/axial compressive capacity/confinement effect/code comparison/finite element analysis/confinement factor分类
建筑与水利引用本文复制引用
项洪,唐浩,曾志攀,苏友庆..考虑约束作用的型钢混凝土柱轴心受压承载力计算[J].建筑钢结构进展,2026,28(6):100-109,10.基金项目
福建省引导性科技计划(2021H0032),福建理工大学科研启动基金(GY-Z23073) （2021H0032）
