南京工业大学学报（自然科学版）2026，Vol.48Issue(2)：247-255,9.DOI:10.3969/j.issn.1671-7627.2026.02.012
基于等尺寸的钢索体热分析简化模型研究
A full-scale simplified thermal analysis model for steel cables
摘要
Abstract
The refined cable model requires substantial effort and high computational cost when it is used to calculate the temperature field of a cable system under fire conditions.Therefore,an efficient and accurate simplified model for the cable temperature field is required.In this study,ABAQUS software was used to perform heat transfer analysis.The temperature field distribution of a refined cable model and a full-scale round steel model was compared and analyzed.Based on heating theory and the geometric properties of cable strands,correction parameters and a corresponding method for the round steel model were proposed.A simplified full-scale round steel model based on parameter correction was then established.Numerical experiments were conducted to determine the optimal values of the correction coefficients.The results show that the refined cable model and the full-scale round steel model predict significantly different temperature rises for cables with different specifications,and this difference becomes more significant as the cross-sectional size increases.Correcting the density and thermal conductivity of the round steel can effectively enhance the simulation accuracy of the full-scale round steel model.When the correction coefficients for density and thermal conductivity are set to 0.45 and 0.35,respectively,the model accurately simulates the temperature field distribution of the cable under various heating curves.关键词
钢索体/热分析/参数修正/修正系数/简化模型Key words
steel cable/thermal analysis/parameter correction/correction coefficient/simplified model分类
交通工程引用本文复制引用
李雪红,颜巍,陈茂锋,李枝军,徐秀丽..基于等尺寸的钢索体热分析简化模型研究[J].南京工业大学学报（自然科学版）,2026,48(2):247-255,9.基金项目
江苏省交通运输科技项目(2021QD06) （2021QD06）
