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EXPERIMENT INVESTIGATION ONMULTIBARREL TUBE- CONFINED CONCRETE UNDER ECCENTRIC COMPRESSION
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摘要: 通过对9个不同尺寸和壁厚的内圆外方的复式钢管混凝土柱试件(其中内(圆)增强方钢管混凝土试件6个,方中空夹层钢管混凝土试件3个),进行偏压试验得到极限承载力和荷载-变形曲线。试验表明,对内(圆)增强方钢管混凝土,内置圆钢管的存在能够对偏压方钢管内核心混凝土起增强作用,且这种增强作用随着圆管管径的增大愈加明显;对于方中空夹层复式钢管混凝土偏压短柱,随着圆钢管管径的增加,其承载力降低的程度愈大。Abstract: The 9 multibarrel tube- confined concrete column specimens with square hollow section in the outer and circular hollow section in the inner (SHS in the outer and CHS in the inner) were prepared, of which 6 concrete- filled square steel tubular specimens reinforced by inner circular steel tube and 3 concrete- filled double skin square steel tube specimens.The results show that the circular hollow section has a reinforced effect on concrete- filled square steel tubular specimens reinforced by inner circular steel tube.With the diameter of inner steel tube increased, the ultimate capacity of concretefilled double skin square steel tube columns is reduced soon.
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Wei S, Mau S T, Vipulanandan C, et al.Performance of New SandwichTube Under Axial Loading: Experiment.Journal of StructuralEngineering, 1995, 121(12): 1 806- 1 814 Wei S,Mau S T, Vipulanandan C, et al.Performance of New SandwichTube Under Axial Loading: Analysis.Journal of Structural Engineering,1995, 121(12): 1 815- 1 821 陶 忠, 韩林海, 黄 宏.方中空夹层钢管混凝土偏心受压柱力学性能的研究.土木工程学报, 2002, 36(2): 33- 40 黄 宏.方中空夹层钢管混凝土轴压力学性能的理论分析.华东交通大学学报, 2003, 20(2): 19- 21 -
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