摘要
介绍了以套箍系数ξ为控制因素的6组、共16根薄壁方钢管轻骨料混凝土短柱的轴压试验结果,阐述了其破坏现象及特征,讨论了其极限承载力、延性、荷载—位移曲线,回归了核心混凝土抗压强度提高系数关于ξ的数学表达式。
16 stub-columns of lightweight aggregate concrete filled square thin-walled steel tubs （SLSCT） are tested under axial compression loads. The results show that the local bucking and post buckling behaviors of the steel tubes ore increased by the support of the lightweight aggregate concrete. Based on the results of the test, the failure mechanism, ductility, ultimate capacity and load-axlal shortening curves are presented. The formula of the filled lightweight aggregate concrete＇s ultimate capacity are derived.
出处
《四川建筑科学研究》
北大核心
2008年第2期18-21,共4页
Sichuan Building Science
基金
石河子大学自然科学基金资助项目(2005065)
关键词
薄壁方钢管混凝土
轻骨料
短柱
轴压
concrete filled square thin-walled steel tubes
lightweight aggregate
stub-column
axial compression
