建筑钢结构进展2025，Vol.27Issue(11)：110-117,8.DOI:10.13969/j.jzgjgjz.20240531001
基于组件法的栓焊节点高温力学模型
High-Temperature Mechanical Model of Welded Flange-Bolted Web Joints Based on Component Method
摘要
Abstract
The high-temperature mechanical property of steel frame beam-column connection joints is one of the key factors affecting the progressive collapse resistant performance of steel frame structures under fire.Based on the component method,the welded flange-bolted web joint was decomposed into basic components such as the tension and compression components of flanges,compression components of bolt holes in connection plate,shear components of bolts,compression components of bolt holes in beam web,and slip components of bolts.The mechanical model of equivalent spring for each component was theoretically derived,and the high-temperature component model for welded flange-bolted web joint was ultimately established.Based on the fire tests of welded flange-bolted web joints that have been conducted,a member system model for the overall force analysis of the joints was constructed,and the effectiveness and accuracy of the component model were verified by comparing the finite element results with the experimental results.The research results indicate that the high-temperature component model of welded flange-bolted web joints proposed in this paper can effectively predict the mechanical performance and behavioral response of steel frame beam-column connection joints under high temperatures.关键词
钢框架/抗连续倒塌性能/组件法/栓焊节点/高温力学性能/抗火试验/组件模型Key words
steel frame/progressive collapse resistant performance/component method/welded flange-bolted web joint/high-temperature mechanical property/fire test/component model分类
土木建筑引用本文复制引用
李永梅,丁润民,刘美景,范圣刚..基于组件法的栓焊节点高温力学模型[J].建筑钢结构进展,2025,27(11):110-117,8.基金项目
国家自然科学基金(52278153),东南大学成贤学院国家级科研项目培育基金(2022NCF005) （52278153）
