外方内圆钢管混凝土短柱轴压性能试验研究
EXPERIMENTAL STUDY OF AXIAL COMPRESSIVE BEHAVIOR ON CONCRETE-FILLED DOUBLE SKIN STEEL TUBULAR SHORT COLUMNS
张艳刚 1王继升 2丛术平 3赵文博4
作者信息
- 1. 太原工业学院,山西太原 030008
- 2. 青岛腾远设计事务所有限公司,山东青岛 266100
- 3. 山东科技大学,山东青岛 266590
- 4. 河海大学,南京 210024
- 折叠
摘要
研究采用轴压试验方法,探究外方内圆钢管混凝土短柱的轴压力学性能.通过设计6根含有相同钢率的外方内圆钢管混凝土短柱,并与2根方钢管混凝土短柱对比分析,发现外方内圆钢管混凝土短柱的极限承载力较方钢管小,但剩余承载力更高.在相同含钢率条件下,增大内钢管直径有助于提高承载力;而在相同内、外钢管直径条件下,增大内钢管面积则减小极限承载力.通过非线性有限元分析验证试验结果,为深化理解外方内圆钢管混凝土短柱性能提供实证支持.
Abstract
This study employs an axial compression test method to investigate the axial compressive mechanical properties of square outer-inner circular steel tube concrete short columns.By designing six short columns with iden-tical steel ratios and conducting a comparative analysis with two square steel tube concrete short columns,it is ob-served that the ultimate bearing capacity of outer-inner circular steel tube concrete short columns is smaller than that of square steel tube columns,but their residual bearing capacity is higher.Under equivalent steel ratio condi-tions,increasing the inner steel tube diameter enhances the bearing capacity,while enlarging the inner steel tube ar-ea reduces the ultimate bearing capacity under the same inner and outer steel tube diameter conditions.Nonlinear fi-nite element analysis is conducted to validate experimental results,providing empirical support for a deeper under-standing of the performance of square outer-inner circular steel tube concrete short columns.
关键词
外方内圆钢管混凝土/轴心受压试验/极限承载力Key words
CFDST columns/axial compressive loading test/ultimate bearing capacity引用本文复制引用
出版年
2024
NETL
NSTL
万方数据