钢管-型钢混凝土柱耐火性能有限元分析
Finite element analysis on fire resistance of steel tubular-steel reinforced concrete column
李明昊1
作者信息
- 1. 山东建筑大学土木工程学院,山东 济南 250101
- 折叠
摘要
随着建筑结构的发展,钢混结构作为现代装配式建筑的主要形式之一,其耐火性能对建筑结构的整体能力影响重大.根据已有的试验研究,利用有限元分析软件ABAQUS构建了钢管-型钢混凝土柱的热-力耦合本构模型,分析了在ISO-834标准升温曲线下不同轴压比、偏心率、长细比和截面边长对钢管-型钢混凝土柱耐火极限的影响.模拟结果表明:构件耐火极限随着轴压比、偏心率和长细比的增加而降低;而在相同受火和荷载条件下,构件耐火极限随着截面边长的增加而增加.
Abstract
With the development of building structure,as one of the main forms of modern prefabricated building,the fire resistance of steel-concrete structure has a significant impact on the overall capacity of the building structure.Based on existing experimental research and using finite element analysis software ABAQUS,this article constructed a thermal-mechanical coupled constitutive model of steel tubular-steel reinforced concrete columns,and analyzed the effects of different axial compression ratios,eccentricities,slenderness ratios and cross-sectional side lengths on the fire resistance limit of steel tubular-steel reinforced concrete columns under the ISO-834 standard heating curve.The simulation results indicate that the fire resistance limit of the component decreases with the increase of axial compression ratio,eccentricity and slenderness ratio.Under the same fire and load conditions,the fire resistance limit of the comporent increases with the increase of cross-sectional side length.
关键词
耐火性能/ABAQUS/钢管-型钢混凝土柱/轴压比Key words
fire resistance/ABAQUS/steel tubular-steel reinforced concrete column/axial compression ratio引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据