高强约束混凝土Z形柱的截面延性  

Cross-section ductility of confined high-strength concrete Z-shaped column

作　　者：焦俊婷[1] 刁波[2] 叶英华[2] 

机构地区：[1]厦门理工学院建筑工程系,福建厦门361021 [2]北京航空航天大学土木工程系,北京100083

出　　处：《吉林大学学报（工学版）》2008年第4期823-828,共6页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(50448015);北京市自然科学基金项目(8052014)

摘　　要：利用编制的高强约束混凝土异形柱截面数值分析程序,通过对多种工况下高强约束混凝土Z形柱截面延性指标进行计算分析,对影响其截面延性的荷载角、轴压比、混凝土强度、纵筋配筋率、箍筋配筋率和截面尺寸等多个因素进行了探讨。研究结果表明:高强约束混凝土Z形柱截面延性的主要影响因素有(从大到小):荷载角、轴压比、混凝土强度和箍筋配筋率;在此基础上,拟合出高强约束混凝土Z形柱截面曲率延性与主要影响因素之间的计算公式,可为高强约束混凝土Z形柱截面延性计算提供参考依据。The cross-section ductility indexes of the confined high-strength concrete Z-shaped column were calculated and analyzed under different loading conditions by means of the developed numerical analysis program for the confined high-strength concrete Z-shaped columns. The parameters affecting the cross-sectlon ductility, such as the loading angle, the axial compression ratio, the concrete strength, the longitudinal reinforcement ratio, the hoop reinforcement ratio, and the cross-section size, etc. , were investigated. The results show that the main parameters（in descending order）include the loading angle, the axial compression ratio, the concrete strength, and the hoop reinforcement ratio. The regressions were made between the cross-section ductility and the main parameters and calculation expressions were derived, providing a reference for the calculation of the ductility of the confined high-strength concrete Z-shaped column cross-sections.

关 键 词：土木工程 高强约束混凝土 Z形柱 截面延性 

分 类 号：TU375[建筑科学—结构工程]