楔形工形柱平面内稳定极限承载力研究  

Research on the in-plane stability ultimate bearing capacity of the tapered columns

作　　者：刘英达 陈明[2] 闫寒[2] 

机构地区：[1]包头市建筑设计研究院,内蒙古包头014030 [2]内蒙古科技大学建筑与土木工程学院,内蒙古包头014010

出　　处：《内蒙古科技大学学报》2009年第3期266-269,共4页Journal of Inner Mongolia University of Science and Technology

摘　　要：通过对12根楔形柱进行静态加载试验,分析和研究楔率及偏心距对楔形柱平面内极限承载力的影响.试件的主要参数为荷载作用的偏心距和楔率.试验在5 000 kN试验机上进行,主要测量了型钢的纵向应变、试件的变形过程、荷载-挠度曲线及试件的极限承载力.试验结果表明,随着楔率的增大,构件的极限承载力也随之增加;荷载偏心距的增大将降低构件的极限承载力.Based on the test results of the 12 tapering columns under the static loads,the influence of tapering ratio and eccentricity of the axial load on the in-plane ultimate bearing capacity of tapering columns were analyzed. The main parameters of the elements are tapering ratios and eccentricity of the load. All of the tests were carried out in a vertical hydraulic universal testing machine with a capacity of 5 000 kN. The longitudinal strain of steel, deformation process of columns,load-deflection curves of columns and ultimate bearing capacity were researched. The experimental results show that the load-carrying capacity increases with increasing the tapering ratios,and reduces with increasing the eccentricity.

关 键 词：楔形构件 极限承载力 楔率 

分 类 号：TU312[建筑科学—结构工程]