内配型钢方钢管混凝土偏压构件受火全过程数值模拟

韩祎; 王景玄; 王文达

doi:10.6052/j.issn.1000-4750.2014.05.S013

内配型钢方钢管混凝土偏压构件受火全过程数值模拟

兰州理工大学甘肃省土木工程防灾减灾重点实验室,甘肃,兰州 730050

基金项目: 国家自然科学基金项目(51468037); 甘肃省高等学校科研项目(2013A-032)

详细信息

作者简介:
韩祎(1989―),女,甘肃人,硕士生,主要从事内配型钢的钢管混凝土构件受火性能的研究(E-mail: cehanyi@gmail.com);王景玄(1986―),男,甘肃人,博士生,从事钢管混凝土结构抗火及抗连续性倒塌性能研究(E-mail: cewangjx@gmail.com).

通讯作者:
王文达(1976―),男,甘肃人,教授,博士,从事钢与混凝土组合结构、混合结构及结构抗火性能的研究(E-mail: wangwd@lut.cn).

中图分类号: TU398⁺.9
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出版历程
- 收稿日期: 2014-05-05
- 修回日期: 2014-12-28
- 刊出日期: 2015-06-24

NUMERICAL SIMULATION ANALYSIS ON CONCRETE-FILLED SQUARE STEEL TUBULAR COLUMNS WITH INTERNAL PROFILED STEEL UNDER ECCENTRIC COMPRESSION EXPOSURE TO FULL-RANGE FIRE

Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou, Gansu 730050, China

摘要

摘要: 内配型钢钢管混凝土构件由于其较高的承载力、较好的延性及耗能能力在工程实践中具有良好的发展前景,该文运用ABAQUS有限元软件,在合理选取钢材、混凝土本构热力模型的基础上,采用顺序热-力耦合的方法建立了内配型钢的方钢管混凝土偏心受压柱火灾全过程的数值模型,计算了其火灾全过程作用下的轴向荷载-位移曲线,分析了截面应变、应力的变化情况及火灾全过程作用下各组件的荷载分配情况,最后对影响极限承载力的主要因素进行了参数分析,发现火灾荷载比、升温时间比、长细比、荷载偏心率及钢管含钢率等因素对构件承载力的影响较为显著。
- 内配型钢钢管混凝土 /
- 偏压构件 /
- 火灾全过程 /
- 荷载分配 /
- 参数分析
Abstract: Concrete-filled steel tubular members with internal profiled steel have prosperous development in practical engineering duo to the high bearing capacity and good ductility and energy dissipation. This paper presents a finite element (FE) model of concrete-filled steel tubular column (CFST) with internal profiled steel to study the full-range fire performance under eccentric compression using the ABAQUS software based on the reasonable material models of steel and concrete. The axial load versus displacement curves were calculated and stress and strain distribution were analyzed when exposed to full-range fire. Parametric studies of CFST members with internal profiled steel were also performed. The results show that the fire load ratio of column, ascending time ratio, slenderness ratio of column and the steel ratio of tube have significant effects on the bearing capacity.
- concrete-filled steel tubular column with encased profiled steel /
- eccentric compression member /
- full-range of fire /
- load distribution /
- parametric study

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参考文献(13)

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施引文献(17)

期刊类型引用(8)

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5.	韩祎，王景玄. 相邻两面受火的内配型钢钢管混凝土柱的耐火极限. 兰州理工大学学报. 2018(04): 142-147 . 百度学术
6.	段进涛，史旦达，汪金辉，焦宇，何佩珊. 火灾环境下钢结构响应行为的FDS-ABAQUS热力耦合方法研究. 工程力学. 2017(02): 197-206 . 本站查看
7.	毛文婧，史艳莉，王文达. 内配型钢圆钢管混凝土轴压短柱在不同含钢率下承载力分析. 工程力学. 2017(S1): 63-70 . 本站查看
8.	毛文婧，王文达，王景玄. 三面受火的内配型钢方钢管混凝土柱火灾全过程分析. 工程力学. 2016(S1): 143-149 . 本站查看