十字形钢骨混凝土异形柱双向偏心受压试验  

Experimental Study on the Biaxial Eccentric Pressure Bearing Capacity of Cross-Shaped Steel Reinforced Concrete Columns

作　　者：徐亚丰[1] 刁晓征[1] 郭建[1] 王萃萃 李晓丽[1] 王华[1] 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳100168 [2]辽宁省城市建设学校,辽宁沈阳110016

出　　处：《沈阳建筑大学学报（自然科学版）》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)

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.

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 

分 类 号：TU317[建筑科学—结构工程]