摘要
目的研究十字形钢骨混凝土异形柱的破坏机理、受力性能及变形能力.方法通过对6个十字形钢骨混凝土异形柱进行双向偏心受压承载力的试验研究,观察了不同含钢率、不同偏心距异形柱的受力过程和破坏形态;分析了钢骨混凝土异形柱在双向偏心荷载作用下破坏特点,荷载-位移曲线及骨架曲线、承载力、位移延性等力学性能.结果明确了钢骨混凝土异形柱在双向偏心荷载作用下的破坏特征,钢骨混凝土异形柱钢骨翼缘的存在对其内部混凝土起到了约束作用.随着含钢率的增加,构件的承载力及延性相应得到提高.结论钢骨混凝土异形柱具有很高的承载能力和很好的延性,十字形钢骨混凝土异形柱可以在工程中推广使用.
A new steel reinforced concrete special - shaped column is designed in this paper. In order to get the failure process and patterns of the steel reinforced concrete special - shaped column, the tests are made to search the biaxial eccentric pressure capacity of 6 steel reinforced concrete special - shaped columns. The failure characteristics, mechanical behaviors of the biaxial eccentric pressure bearing capacity of the columns are analyzed, such as the loading - displacement, skeleton curves, load bearing capacity, displacement ductili- ty, the effect of carrying capacity and ductility under steel ratio. In conclusion, steel reinforced concrete special - shaped column has high load bearing capacity and excellent ductility. The new cross - shaped steel reinforced concrete special -shaped column can be used in practical projects widely.
出处
《沈阳建筑大学学报（自然科学版）》
CAS
北大核心
2009年第1期100-105,共6页
Journal of Shenyang Jianzhu University：Natural Science
基金
辽宁省教育厅科研计划项目(20060691)
沈阳建筑大学省级重点试验室开放基金项目(JG-200602)
沈阳市人才资源开发专项基金项目(2007140303002)
关键词
钢骨混凝土异形柱
十字形截面
双向偏心受压承载力
承载力
延性
steel reinforced concrete special -shaped column
cross -shaped section
biaxial eccentric pressure capacity
carrying capacity
ductility
