高温后波纹钢腹板-方钢管组合柱有限元研究
Finite element study of corrugated steel web-square steel tube composite columns after fire exposure
王子良 1毛小勇1
作者信息
- 1. 苏州科技大学 江苏省结构工程重点实验室,江苏 苏州 215011
- 折叠
摘要
波纹钢腹板-方钢管组合柱是一种新型的结构形式,为研究方钢管和波纹钢腹板外露于火灾下受到高温影响发生的损伤,采用ABAQUS软件建立了升降温火灾全过程作用后波纹钢腹板-方钢管组合柱性能分析有限元模型,模型时考虑了构件初始缺陷影响,采用试验实测数据结果对有限元模型进行可靠性验证.通过验证后的有限元模型对影响火灾后波纹钢腹板组合柱剩余承载力的主要因素进行参数分析.结果表明:升温时间、截面周长、截面含钢率和荷载偏心率是影响波纹钢组合柱火灾后剩余承载力的主要因素,研究结果可为波纹钢腹板-方钢管混凝土组合柱抗火性能研究提供参考.
Abstract
The corrugated steel web-concrete filled square steel tube composite column is a new type of struc-tural form.In order to study the damage caused by high temperature to the exposed corrugated steel web and square steel tube during a fire,an ABAQUS finite element model was established to analyze the performance of the corrugated steel web-square steel tube composite column under the action of a full process of heating and cooling during a fire.The model also took into account the initial defects of the component and was verified for reliability using experimental data and results.The validated finite element model was used to conduct param-eter analysis on the main factors affecting the residual bearing capacity of the corrugated steel composite column after a fire.The results show that the heating time,sectional perimeter,steel content in section and load eccen-tricity are the main factors affecting the residual bearing capacity of the corrugated steel composite column after a fire.And the research results can provide references for the study of the fire resistance performance of the cor-rugated steel web-concrete filled square steel tube composite column.
关键词
波纹钢腹板/组合柱/火灾全过程/升降温/温度场/剩余承载力Key words
corrugated steel webs/composite columns/entire fire process/temperature rise and fall/temperature field/residual bearing capacity引用本文复制引用
基金项目
国家自然科学基金项目(52278514)
江苏省高等学校自然科学研究重大项目(21KJA560002)
出版年
2024
NETL
NSTL
万方数据