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为研究混凝土空腔对方钢管混凝土柱受力性能的影响，采用ABAQUS对试件进行有限元分析，通过改变空腔位置、空腔率和长细比研究方钢管混凝土柱受力性能，分析方钢管混凝土柱的破坏模式和承载力。研究结果表明：空腔对方钢管混凝土柱受力性能有显著影响。与无空腔柱对比，当空腔位于柱高2/3H～H处时试件承载力下降幅度最大，位于柱高0～1/3H处时下降幅度最小，破坏模式均为压弯破坏；当空腔位于柱高1/3H～2/3H处，空腔率为1.90%时，试件承载力比标准试件N0下降1.74%;空腔率为0.47%时，试件承载力比标准试件N0下降3.14%;空腔对不同长细比试件受力性能的影响程度不同，长细比大的方钢管混凝土柱存在空腔时，其承载力和稳定系数下降程度较大。
Abstract：To study the effect of concrete cavity on the bearing performance of concrete-filled square steel tubular column, finite element analysis was carried out by ABAQUS. The bearing performance of concrete-filled square steel tubular columns was investigated by changing the cavity position, cavity rate and slenderness ratio, and the failure mode and bearing capacity of concrete-filled square steel tubular columns were analyzed. The results show that the cavity has a significant effect on the bearing performance of the concrete-filled square steel tube columns. Compared with the column without cavity, the bearing capacity of the specimen decreases the most when the cavity is located at 2/3H-H of the column, and decreases the least when the cavity is located at 0-1/3H of the column. The failure modes are all compressive-bending failure.When the cavity is located at the column height of 1/3H-2/3H with the cavity ratio of 1.90%, the bearing capacity of the specimen is 1.74% lower compared with that of the standard specimen N0. When the cavity ratio is 0.47%, the bearing capacity of the specimen is 3.14% lower than that of the standard specimen N0.The effect of cavity on the bearing performance of the specimen is different with different slenderness ratio. The load-bearing capacity and stability coefficient of concrete-filled square steel tubular column with large slenderness ratio decrease greatly when the cavity exists.
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基本信息:
中图分类号:TU398.9
引用信息:
[1]韩亚菲,郁有升,刘作岩,等.空腔对方钢管混凝土柱受力性能影响研究[J].青岛理工大学学报,2026,47(03):1-9+93.
基金信息:
山东省自然科学基金青年项目(ZR2020QE243)
2024-08-16
2024
2024-12-19
2026-03-31
2026
2
2026-06-17
2026-06-17