加劲薄壁T形钢管混凝土受压性能  

Compressive properties of stiffened thin-walled T-shaped concrete-filled steel tubes

作　　者：王小爱 王利莉 郑君 王微微 WANG Xiaoai;WANG Lili;ZHENG Jun;WANG Weiwei(School of Architectural Engineering,Guangzhou Vocational and Technical University of Science and Technology,Guangzhou 510555,China)

机构地区：[1]广州科技职业技术大学建筑工程学院,广东广州510555

出　　处：《粘接》2025年第2期60-63,共4页Adhesion

基　　金：国家自然科学青年基金项目(项目编号:51208246);广东省普通高校创新团队(自然科学)项目(项目编号:2024KCXTD068);广东省教育厅普通高校青年创新人才项目(项目编号:2024KQNCX087);广州科技职业技术大学校级课题(项目编号:2024LG02)。

摘　　要：进行加劲薄壁T形钢管混凝土轴压试验,记录试验过程,并获得侧向挠度变形曲线和荷载-轴向变形曲线。采用ABAQUS建立有限元模型,并进行验证。选用长细比、钢筋直径、混凝土等级、钢筋和钢管屈服强度、钢筋直径和间距、截面宽度和含钢量为参数,对轴压承载力影响因素进行分析。由参数分析可见:长细比是轴压稳定承载力系数的主要影响因素,其他参数影响可忽略不计。轴压稳定承载力随长细比的增加而减小。当长细比由20增大至60时,轴压稳定承载力系数由0.9减小至0.7左右。在参数分析基础上,最终建立承载力计算公式。The axial compression test of stiffened thin-walled T-shaped concrete-filled steel tube was carried out,the test process was recorded,and the lateral deflection deformation curve and load-axial deformation curve were obtained.ABAQUS was used to establish the finite element model and verify it.The influencing factors of axial compressive bearing capacity were analyzed by selecting slenderness ratio,steel bar diameter,concrete grade,yield strength of steel bar and steel pipe,steel bar diameter and spacing,cross-section width and steel content.From the parameter analysis,it can be seen that the slenderness ratio is the main influencing factor of the axial compressive stability bearing capacity coefficient,and the influence of other parameters is negligible.The axial compressive stability decreases with the increase of the slenderness ratio.When the slenderness ratio increases from 20 to 60,the axial compressive stability bearing capacity coefficient decreases from 0.9 to about 0.7.On the basis of parameter analysis,the formula for calculating the bearing capacity was finally established.

关 键 词：T形 薄壁钢管混凝土 受压承载力 加劲钢筋 

分 类 号：TQ178[化学工程—硅酸盐工业] TU528[建筑科学—建筑技术科学]