首页|方钢管超轻混凝土短柱轴压性能试验研究

方钢管超轻混凝土短柱轴压性能试验研究

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  • 国家科技期刊平台
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对16个方钢管超轻混凝土短柱和8个空钢管短柱进行了轴压试验,以超轻混凝土强度和含钢率为变化参数,研究方钢管超轻混凝土短柱的破坏形态和受力性能.结果表明,随着超轻混凝土强度的降低,钢管对核心混凝土的约束效应越强;随着含钢率的增加,构件的承载力和变形能力提高,但当含钢率高于0.25时,超轻混凝土的存在对构件的承载力和变形能力已基本没有影响.基于叠加理论,提出了适用于方钢管超轻混凝土短柱承载力的计算公式.
Experimental Study on the Axial Compression Behavior of Ultra-Light Concrete-Filled Square Steel Tubular Short Columns
Sixteen ultra-light concrete-filled square steel tubular short columns and eight hollow steel tubular short columns were tested under axial compression.The failure mode and mechanical behavior of ultra-light concrete-filled square steel tubular short columns were studied by taking the strength of ultra-light concrete and the steel ratio as parameters.The results show that the confinement effect of steel tube on core concrete is stronger with the decrease of ultra-light concrete strength.With the increase of steel ratio,the bearing capacity and deformation capacity of members increase.However,when the steel ratio is higher than 0.25,the presence of ultra-light concrete has little effect on the bearing capacity and deformation capacity of the members.Based on the superposition theory,a formula for calculating the bearing capacity of ultra-light concrete-filled square steel tubular short columns is proposed.

ultra-light concrete-filled steel tubular short columnaxial compression testconfinement effectsteel ratioultimate bearing capacity under axial compression

刘志轩、曲慧、陈琦、张威

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烟台大学土木工程学院,山东烟台 264005

烟台飞龙集团有限公司,山东烟台 264003

钢管超轻混凝土短柱 轴压试验 约束效应 含钢率 轴压极限承载力

山东省自然科学基金烟台市科技发展计划项目烟台市科技发展计划项目

ZR2020ME2382020XDRH1042022MSGY052

2024

10.13969/j.cnki.cn31-1893.2024.02.004

建筑钢结构进展
同济大学

建筑钢结构进展

CSTPCD北大核心
影响因子：0.806
ISSN：1671-9379
年,卷(期)：2024.26(2)
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