作　　者： ; ;

机构地区： 厦门理工学院

出　　处： 《厦门理工学院学报》 2011年第2期36-40,共5页

摘　　要： 对现有规程没有具体技术规定的Z形柱轴压比限值进行研究.基于平截面假设和异形柱轴压比限值大小偏压界限理论法,利用简便快捷的截面高斯积分计算Z形柱轴压比限值,分析了荷载角、截面尺寸、混凝土强度、配筋率等因素对Z形柱轴压比限值的影响.结论表明:荷载角对Z形柱轴压比限值影响明显,最不利荷载角为135°和315°;在最不利荷载角作用下,轴压比限值随混凝土强度增加有一定提高,轴压比限值随肢长厚比增加略有提高,纵筋配筋率变化对轴压比限值几乎没有影响. This paper aims to study the ultimate axial compression ratio for reinforced concrete Z-shaped columns cross-section.Based on plane assumption and large and small eccentric compression limitation,the ultimate axial compression ratio of reinforced concrete Z-shaped columns is computed by the simple across-section Gauss numerical integration method.Some effective factors are researched such as loading angle,section dimension,concrete strength,and reinforced ratio.The conclusions can then be drawn that the ultimate axial compression ratio of Z-shaped columns is affected by different loading angles;and the worst loading angles are 135°and 315°.At the worst loading angles,the ultimate axial compression ratio increase with the increasing of the ratio of length to thickness of sections,the ultimate axial compression ratio increase with the increasing of concrete strength,and reinforced ratio does not affect the ultimate axial compression ratio.

关 键 词： 钢筋混凝土 形柱 轴压比限值

领　　域： [建筑科学]