圆形钢管-空间钢构架混凝土组合柱偏心受压性能试验研究  

Experimental study on eccentric behavior of composite columns of circular steel concrete filled with spatial steel frames

作　　者：王英恺 唐兴荣[1] WANG Yingkai;TANG Xingrong(School of Civil Engineering,SUST,Suzhou 215011,China)

机构地区：[1]苏州科技大学土木工程学院,江苏苏州215011

出　　处：《苏州科技大学学报（工程技术版）》2020年第1期34-39,共6页Journal of Suzhou University of Science and Technology（Engineering and Technology Edition）

摘　　要：为了进一步研究圆形钢管-空间钢构架混凝土组合柱的偏心受压性能,进行了8个圆形钢管-空间钢构架混凝土组合柱的偏心受压试件和1个轴心受压试件的静力试验,探讨了偏心距、空间钢构架缀条间距、钢管径厚比等参数对圆形钢管-空间钢构架混凝土组合柱偏心受压性能的影响规律。试验结果表明,偏心受压组合柱的截面应变基本符合平截面假定;在其他条件相同时,随着偏心距的增大,组合柱的偏心受压承载力降低;组合柱的偏心受压承载力与空间钢构架混凝土约束影响系数、钢管混凝土套箍指标有关,大体上呈线性关系。In order to further study the eccentric compressive behavior of composite columns of the circular steel concrete filled with spatial steel frames,static tests of 8 eccentric compression specimens and 1 axial compression specimens of composite columns of circular steel concrete filled with spatial steel frames were carried out,and the effects of the eccentricity,spacing of spatial steel frame concrete and the diameter-thickness ratio of steel tubular concrete on eccentric compression behavior of composite columns of circular steel concrete filled with spatial steel frames were discussed.The test results show that the cross-section strain of the eccentrically loaded composite columns basically conforms to the plane section assumption,and when other conditions are the same,the eccentric compressive capacity of composite columns decreases with the increase of eccentricity,the eccentric compressive bearing capacity of composite columns is related to the confinement coefficient of spatial steel frame concrete and the hoop index of concrete filled steel tubular,which is generally linear.

关 键 词：空间钢构架 圆形钢管混凝土 组合柱 偏心受压性能 试验研究 

分 类 号：TU398.2[建筑科学—结构工程]