结构工程师2025，Vol.41Issue(6)：13-21,9.DOI:10.15935/j.cnki.jggcs.202506.0002
高强耐火钢受弯构件火灾下力学性能数值模拟与设计方法
Numerical Simulation and Design Method on Mechanical Behaviour of High-Strength Fire-Resistant Steel Bending Members Under Fire
摘要
Abstract
In this paper,the fire resistance of high-strength fire-resistant steel bending members is studied by finite element numerical simulation in ABAQUS.Based on the existing test results,the finite element model established by the thermo-mechanical method is verified,and the effects of load ratio,slenderness ratio and steel strength grade on the fire performance of high-strength fire-resistant steel bending members are further analyzed.The results show that the load ratio has a great influence on the fire resistance of the members,while the slenderness ratio and steel strength grade have little influence on the critical temperature of the members.The fire resistance of the bending members gradually decreases with the increase of the load ratio.Finally,the stability parameters for high-strength fire-resistant steel bending members at elevated temperature are proposed by modifying the existing specifications,which are validated by the test results and finite element simulation.关键词
高强耐火钢/受弯构件/数值模拟/参数分析/抗火设计方法Key words
high-strength fire-resistant steel/bending member/numerical simulation/parametric study/fire resistance design分类
建筑与水利引用本文复制引用
陈安康,郭俊辉,潘浩宇,许铁龙,费楚妮,罗金辉..高强耐火钢受弯构件火灾下力学性能数值模拟与设计方法[J].结构工程师,2025,41(6):13-21,9.基金项目
国家电网有限公司科技项目资助(SGTYHT/21-JS-223) （SGTYHT/21-JS-223）
